Lubricating device for rotating shaft
By using components such as sealing rings and annular springs in the lubrication device of the rotating shaft, the problem of lubricating oil overflow is solved, the effective sealing of lubricating oil and the continuous lubricating effect of lubricating oil are achieved, and the service life and operation convenience of the rotating shaft are improved.
Patent Information
- Application Number
- CN202422197658.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-09
AI Technical Summary
In the prior art, lubricating oil is prone to overflow when the rotating shaft rotates at high speed, resulting in poor lubrication effect and frequent addition, which is inconvenient to operate.
A lubrication device is designed, including components such as rotary shaft, bearing, sleeve, sealing ring and annular tension spring. By setting an annular tension spring and a tapered surface design on the inner side of the sealing ring, the sealing ring fits with the rotary shaft, prevents lubricating oil leakage, and reduces friction through balls.
It realizes effective sealing of lubricant under high-speed rotation conditions, reduces lubricant leakage, avoids the need for frequent addition of lubricant, and improves the lubricating effect and the operation stability of the equipment.
Smart Images
Figure CN223120611U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rotating shaft lubrication, and particularly relates to a lubricating device for a rotating shaft. Background Technique
[0002] A rotating shaft is a common transmission element in mechanical equipment, and the smooth operation and service life of the rotating shaft directly affect the normal operation of the equipment. Since the rotating shaft is in a high-speed rotation state during operation, the rotating shaft must be well lubricated to reduce the friction of the rotating shaft and thus extend its service life.
[0003] At present, the lubrication method for the rotating shaft is usually to manually add lubricating oil at the connection between the rotating shaft and the bearing. However, the centrifugal force generated by the high-speed rotating shaft will cause the lubricating oil to overflow from the connection between the bearing and the rotating shaft, which results in the rotating shaft not being well lubricated and requires frequent manual addition of lubricating oil, thus causing inconvenience in operation. Content of the Utility Model
[0004] (1) Technical Problems to be Solved
[0005] Aiming at the deficiencies of the prior art, the utility model provides a lubricating device for a rotating shaft, which has the advantages of not needing to frequently add lubricating oil at the connection between the rotating shaft and the bearing and being able to prevent the overflow of lubricating oil, and solves the above technical problems.
[0006] (2) Technical Solution
[0007] To achieve the above object, the utility model provides the following technical solution: A lubricating device for a rotating shaft, including a rotating shaft, an outer surface of the rotating shaft is sleeved with a bearing, an outer ring of the bearing is clamped with a shaft sleeve, end sleeves are installed at two ends of the shaft sleeve, a sealing ring is arranged inside the end sleeve, an annular tension spring is sleeved inside the sealing ring, and a bottom pipe is fixedly connected to an end surface of the sealing ring. A sleeve is threadedly connected inside the bottom pipe, a compression spring is arranged inside the sleeve, one end of the compression spring contacts a ring piece, a connecting rod is fixedly connected to a center of an end surface of the ring piece, one end of the connecting rod is connected to a first annular sleeve, a plurality of balls are rollingly connected to an inner side of the first annular sleeve, and a second annular sleeve is fixedly connected to an inner wall of the end sleeve.
[0008] Preferably, the shaft sleeve is filled with lubricating oil, an inner ring of the bearing is sleeved with the rotating shaft, the sealing ring is sleeved on an outer surface of the rotating shaft, and the head and tail of the annular tension spring are connected to each other.
[0009] Through the above technical solution, the rotating shaft and the bearing can be lubricated by filling an appropriate amount of lubricating oil in the shaft sleeve, so that the resistance is small when the rotating shaft rotates at a high speed. By setting the sealing ring on both sides of the shaft sleeve, the problem of side leakage of the lubricating oil can be prevented. Since the annular spring is sleeved inside the sealing ring, the sealing ring can always be kept in contact with the rotating shaft. During the long-term rotation of the rotating shaft, some frictional losses will inevitably occur between the sealing ring and the rotating shaft. Therefore, by setting the annular spring inside the sealing ring, it can play a role of radial compensation for the sealing ring, so that the lubricating oil will not leak from the connection between the rotating shaft and the sealing ring.
[0010] Preferably, a semi-circular groove is formed inside the sealing ring, and an annular spring is embedded in the semi-circular groove. The shaft sleeve and the sealing sleeve are connected by a plurality of screws, and an installation plate is integrally connected to the outer surface of the shaft sleeve. Four screw holes are formed on the outer surface of the installation plate in a counter-bracing manner.
[0011] Through the above technical solution, the sealing ring is assembled inside the sealing sleeve by using a wear-resistant flexible material. Since a semi-circular groove is formed inside the sealing ring, the annular spring can be effectively clamped through this semi-circular groove, so that the annular spring is not easily slipped off from the sealing ring when the rotating shaft rotates at a high speed. A side gasket is also provided between the shaft sleeve and the sealing sleeve. In this way, when the sealing sleeve is installed on both sides of the shaft sleeve by screws, the sealing performance can be further improved. An installation plate is fixedly connected to the outer surface of the shaft sleeve. The screw holes on the installation plate cooperate with bolts to fix the installation plate on the equipment, and then the entire lubrication device and the rotating shaft are installed on the equipment.
[0012] Preferably, the cross section of the sealing ring is in the shape of a truncated cone, and the inner wall of the sealing sleeve has a conical surface, and the conical surface is in contact with the curved surface of the sealing ring.
[0013] Through the above technical solution, the curved surface of the sealing ring is in close contact with the conical surface inside the sealing sleeve, which can prevent the lubricating oil from leaking from the gap between the sealing ring and the sealing sleeve.
[0014] Preferably, the other end of the compression spring abuts against the end face of the sealing ring, and the ring piece is arranged inside the sleeve.
[0015] Through the above technical solution, since the compression spring is arranged inside the sleeve, one end of the compression spring has a resisting force on the sealing ring, so that the sealing ring has a lateral compensation force, so that the sealing ring can always be kept in contact with the conical surface of the sealing sleeve, ensuring the sealing performance between the sealing ring and the sealing sleeve, and further ensuring that the lubricating oil is difficult to leak, thus ensuring the lubrication effect on the rotating shaft.
[0016] Preferably, a plurality of spherical grooves are circumferentially formed on the end face of the second annular sleeve around its axis direction, and balls are rotatably connected in the spherical grooves, and the balls are rotatably connected between the first annular sleeve and the second annular sleeve.
[0017] With the above technical solution, when the rotating shaft rotates at a high speed, it can drive the sealing ring to rotate accordingly. In this way, the sealing ring drives the sleeve, the sleeve drives the ring plate, the ring plate drives the connecting rod, and the connecting rod drives the first annular sleeve to rotate. By setting a plurality of balls, the friction force can be reduced.
[0018] Compared with the prior art, the present utility model provides a lubricating device for a rotating shaft, which has the following beneficial effects:
[0019] 1. By setting components such as a sealing sleeve and a sealing ring, the sealing ring is assembled in the shaft sleeve, and an annular tension spring is sleeved on the inner side surface of the sealing ring. In this way, the sealing ring can always be kept in contact with the rotating shaft. During the long-term rotation of the rotating shaft, it is inevitable that some frictional losses will occur between the sealing ring and the rotating shaft. Therefore, by setting the annular tension spring to be sleeved on the inner side of the sealing ring, it can play a role of radial compensation for the sealing ring, so that the lubricating oil will not leak from the connection between the rotating shaft and the sealing ring, and thus there is no need to frequently add lubricating oil to the shaft sleeve.
[0020] 2. The curved surface of the sealing ring of the present utility model is closely attached to the conical surface inside the sealing sleeve, which can prevent the lubricating oil from leaking from the gap between the sealing ring and the sealing sleeve. Since the compression spring is arranged inside the sleeve, one end of the compression spring has a resisting force on the sealing ring, so that the sealing ring has a lateral compensation force, enabling the sealing ring to always remain in contact with the conical surface of the sealing sleeve, ensuring the sealing performance between the sealing ring and the sealing sleeve, further ensuring that the lubricating oil is difficult to leak, and thus ensuring the lubricating effect on the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a three-dimensional schematic diagram after the structure of the present utility model is assembled;
[0022] Figure 2 It is an exploded schematic diagram of the structure of the present utility model;
[0023] Figure 3 It is a sectional schematic diagram of the structure of the present utility model;
[0024] Figure 4 It is the structure of the present utility model Figure 3 Partial enlarged schematic diagram of A in the figure.
[0025] Wherein: 1. Rotating shaft; 2. Bearing; 3. Shaft sleeve; 4. Sealing sleeve; 5. Sealing ring; 6. Annular tension spring; 7. Bottom tube; 8. Sleeve; 9. Compression spring; 10. Ring plate; 11. Connecting rod; 12. First annular sleeve; 13. Ball; 14. Second annular sleeve; 15. Mounting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0027] Please refer to Figures 1-4 , a lubrication device for a rotating shaft, including a rotating shaft 1. A bearing 2 is sleeved on the outer surface of the rotating shaft 1. A shaft sleeve 3 is clamped to the outer ring of the bearing 2. Sealing sleeves 4 are installed at both ends of the shaft sleeve 3. A sealing ring 5 is arranged inside the sealing sleeve 4. An annular tension spring 6 is sleeved inside the sealing ring 5. And a bottom pipe 7 is fixedly connected to the end surface of the sealing ring 5. A sleeve 8 is threadedly connected inside the bottom pipe 7. A compression spring 9 is arranged inside the sleeve 8. One end of the compression spring 9 contacts a ring piece 10. A connecting rod 11 is fixedly connected to the center of the end surface of the ring piece 10. One end of the connecting rod 11 is connected to a first annular sleeve 12. A plurality of balls 13 are rollingly connected to the inner side of the first annular sleeve 12. A second annular sleeve 14 is fixedly connected to the inner wall of the sealing sleeve 4.
[0028] Specifically, lubricating oil is filled in the shaft sleeve 3. The inner ring of the bearing 2 is sleeved on the rotating shaft 1. The sealing ring 5 is sleeved on the outer surface of the rotating shaft 1. The head and tail of the annular tension spring 6 are connected to each other. The advantages are that by filling an appropriate amount of lubricating oil in the shaft sleeve 3, the rotating shaft 1 and the bearing 2 can be lubricated, so that the resistance is small when the rotating shaft 1 rotates at a high speed. By providing the sealing ring 5 on both sides of the shaft sleeve 3, the problem of side leakage of lubricating oil can be prevented. Since the annular tension spring 6 is sleeved inside the sealing ring 5, the sealing ring 5 can always be attached to the rotating shaft 1. During the long-term rotation of the rotating shaft 1, some frictional losses will inevitably occur between the sealing ring 5 and the rotating shaft 1. Therefore, by sleeving the annular tension spring 6 inside the sealing ring 5, a radial compensation effect can be achieved on the sealing ring 5, so that the lubricating oil will not leak from the connection between the rotating shaft 1 and the sealing ring 5.
[0029] Specifically, a semi-circular groove is formed on the inner side of the sealing ring 5, and an annular tension spring 6 is embedded in the semi-circular groove. The shaft sleeve 3 and the sealing sleeve 4 are connected by a number of screws. Moreover, an installation plate 15 is integrally connected to the outer surface of the shaft sleeve 3, and four screw holes are formed in a counter-bracing manner on the outer surface of the installation plate 15. The advantages are as follows: The sealing ring 5 is assembled inside the sealing sleeve 4 using a wear-resistant flexible material. Since a semi-circular groove is formed on the inner side of the sealing ring 5, the annular tension spring 6 can be effectively clamped through this semi-circular groove, so that the annular tension spring 6 is not easily slipped off the sealing ring 5 when the rotating shaft 1 rotates at a high speed. A side sealing gasket is also provided between the shaft sleeve 3 and the sealing sleeve 4. In this way, when the sealing sleeve 4 is installed on both sides of the shaft sleeve 3 through screws, the sealing performance can be further enhanced. The installation plate 15 is fixedly connected to the outer surface of the shaft sleeve 3, and the screw holes on the installation plate 15 cooperate with bolts to fix the installation plate 15 on the equipment, and then the entire lubrication device and the rotating shaft 1 are installed on the equipment.
[0030] Specifically, the cross-section of the sealing ring 5 is in the shape of a truncated cone, and the inner wall of the sealing sleeve 4 has a conical surface, which is in fit with the curved surface of the sealing ring 5. The advantages are as follows: The curved surface of the sealing ring 5 is in close fit with the conical surface inside the sealing sleeve 4, so that the lubricating oil can be prevented from leaking from the gap between the sealing ring 5 and the sealing sleeve 4.
[0031] Specifically, the other end of the compression spring 9 abuts against the end face of the sealing ring 5, and the ring piece 10 is arranged inside the sleeve 8. The advantages are as follows: Since the compression spring 9 is arranged inside the sleeve 8, one end of the compression spring 9 has a resisting force on the sealing ring 5, so that the sealing ring 5 has a lateral compensation force, enabling the sealing ring 5 to always remain in fit with the conical surface of the sealing sleeve 4, ensuring the sealing performance between the sealing ring 5 and the sealing sleeve 4, further ensuring that the lubricating oil is difficult to leak, and thus ensuring the lubrication effect on the rotating shaft 1.
[0032] Specifically, a plurality of spherical grooves are circumferentially formed on the end face of the second annular sleeve 14 around its axis direction, and the ball bearings 13 are rotatably connected in the spherical grooves. The ball bearings 13 are rotatably connected between the first annular sleeve 12 and the second annular sleeve 14. The advantages are as follows: When the rotating shaft 1 rotates at a high speed, it can drive the sealing ring 5 to rotate accordingly. In this way, the sealing ring 5 drives the sleeve 8, the sleeve 8 drives the ring piece 10, the ring piece 10 drives the connecting rod 11, and the connecting rod 11 drives the first annular sleeve 12 to rotate. By arranging a plurality of ball bearings 13, the frictional force can be reduced.
[0033] When in use, the bearing 2 is assembled on the outer surface of the rotating shaft 1, and then the bearing 2 is installed in the shaft sleeve 3, and then the shaft sleeve 3 is filled with an appropriate amount of lubricating oil, and then the sleeve 4 is connected to the two ends of the sleeve 3. The sealing ring 5 and other components are pre-assembled inside the sleeve 4. The sealing ring 5 can be sleeved on the outer surface of the rotating shaft 1, thereby preventing the lubricating oil from leaking from the gap between the rotating shaft 1 and the sealing ring 5. Since an annular tension spring 6 is sleeved on the inner side of the sealing ring 5, it can play a radial compensation role for the sealing ring 5, thereby further enhancing the sealing performance. Since the curved surface of the sealing ring 5 and the conical surface inside the sleeve 4 are closely fitted, and the compression spring 9 is arranged inside the sleeve 8, one end of the compression spring 9 has a resistance force on the sealing ring 5, so that the sealing ring 5 has a lateral compensation force, so that the sealing ring 5 can always remain in contact with the conical surface of the sleeve 4, thereby ensuring the sealing performance between the sealing ring 5 and the sleeve 4, further ensuring that the lubricating oil is difficult to leak, thereby ensuring the lubrication of the rotating shaft.
[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A lubrication device for a rotating shaft, comprising a rotating shaft (1), and a bearing (2) sleeved on the outer surface of the rotating shaft (1), characterized in that: The outer ring of the bearing (2) is clamped with a bushing (3). Seals (4) are installed at both ends of the bushing (3). A sealing ring (5) is arranged inside the seal (4). An annular tension spring (6) is sleeved inside the sealing ring (5). A bottom tube (7) is fixedly connected to the end face of the sealing ring (5). A sleeve (8) is connected to the bottom tube (7) by internal threads. A compression spring (9) is arranged inside the sleeve (8). One end of the compression spring (9) contacts a ring plate (10). A connecting rod (11) is fixedly connected to the center of the end face of the ring plate (10). One end of the connecting rod (11) is connected to a first annular sleeve (12). A plurality of balls (13) are rollingly connected to the inner side of the first annular sleeve (12). A second annular sleeve (14) is fixedly connected to the inner wall of the seal (4).
2. The lubrication device for a rotating shaft according to claim 1, characterized in that: The bushing (3) is filled with lubricating oil. The inner ring of the bearing (2) is sleeved with a rotating shaft (1). The sealing ring (5) is sleeved on the outer surface of the rotating shaft (1). The head and tail of the annular tension spring (6) are connected to each other.
3. A lubricating device for a rotating shaft according to claim 1, characterized in that: A semi-circular groove is formed on the inner side of the sealing ring (5). The annular tension spring (6) is embedded in the semi-circular groove. The bushing (3) and the seal (4) are connected by a plurality of screws. An installation plate (15) is integrally connected to the outer surface of the bushing (3). Four screw holes are symmetrically formed on the outer surface of the installation plate (15).
4. A lubricating device for a rotating shaft according to claim 1, characterized in that: The cross section of the sealing ring (5) is frustum-shaped. The inner wall of the seal (4) has a conical surface, and the conical surface fits the curved surface of the sealing ring (5).
5. A lubrication device for a rotating shaft according to claim 1, characterized in that: The other end of the compression spring (9) abuts against the end face of the sealing ring (5). The ring plate (10) is arranged inside the sleeve (8).
6. The lubrication device for a rotating shaft according to claim 1, characterized in that: A plurality of spherical grooves are circumferentially formed on the end face of the second annular sleeve (14) around its axis. The balls (13) are rollingly connected in the spherical grooves. The balls (13) are rollingly connected between the first annular sleeve (12) and the second annular sleeve (14).