Special long-life bearing
By designing a double protective structure for components such as ring plate, slip ring, elastic rubber ring in cross-head bearings, it prevents impurities from entering between the sleeve and the shaft head, solving the problems of smooth sliding and life of the bearing in complex environments, and achieving long service life of the bearing.
Patent Information
- Application Number
- CN202422033280.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-08-21
AI Technical Summary
In a complex working environment, the connecting opening between the shaft sleeve and the shaft head is easy to enter impurity particles, which affects the sliding smoothness of the needle and the shaft head surface and reduces the service life of the bearing.
A special long-life bearing is designed, and a double protective structure is formed by setting up ring plates, slip rings, elastic rubber rings, fixed cylinders, slots, clamping springs, telescopic springs, carbon semi-rings and elastic ropes to prevent impurities from entering between the sleeve and the shaft head, and toner produced by the wear of the carbon semi-rings for lubrication.
Effectively prevent impurities from entering, ensure smooth sliding of the inner roller needle and the shaft head surface of the shaft, and extend the service life of the bearing.
Smart Images
Figure CN223241870U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearings, in particular to a special long-life bearing. Background Art
[0002] Specially designed long-life bearings are bearings designed for specific application requirements. They generally have higher durability and reliability and can be used in harsh working conditions or situations requiring high reliability.
[0003] In the process of using the crosshead bearing, since the sleeves on the outside of the shaft head in the four directions of the crosshead bearing can slide independently, and one end of the sleeve of the crosshead bearing is open and sleeved on the shaft head for use, the working environment of the mechanical equipment used by the crosshead bearing is relatively complex, and the connection opening between the crosshead bearing sleeve and the shaft head is prone to foreign particles entering, which can easily affect the sliding smoothness of the needle roller inside the sleeve and the surface of the shaft head. In addition, the sealing devices that are tightly attached to the inside of the sleeve or the outside of the shaft head can easily affect the working effect of the crosshead bearing to a large extent, reducing the service life of the bearing. Therefore, a special long-life bearing is proposed to address the above problems. Utility Model Content
[0004] The purpose of the utility model is to provide a special long-life bearing to solve the problem that the working environment of the mechanical equipment used by the crosshead bearing is relatively complex, and foreign particles are easily introduced into the connection opening between the crosshead bearing sleeve and the shaft head, which can easily affect the sliding smoothness between the needle roller on the inner side of the sleeve and the surface of the shaft head. In addition, the sealing device tightly attached to the inner side of the sleeve or the outer side of the shaft head can easily affect the working effect of the crosshead bearing to a large extent, thereby reducing the service life of the bearing.
[0005] To achieve the above objectives, the present invention provides the following technical solutions:
[0006] A special long-life bearing comprises a shaft body, a shaft head and a shaft sleeve, wherein the shaft body is fixedly connected to the shaft head on the outside, the shaft head is fixedly connected to the ring plate on the outside, the slip ring is slidably connected to the inside of the ring plate, the slip ring is fixedly connected to the inside of the slip ring is fixedly connected to the shaft sleeve, the shaft head is slidably connected to the shaft sleeve on the outside, a retaining frame is arranged on the inside of the sleeve, a needle roller is rotated on the inside of the retaining frame, the shaft sleeve is fixedly connected to a fixed cylinder near one end of the shaft body, a slot is provided on the inside of the fixed cylinder, a retaining spring is engaged and connected to the inside of the slot, the retaining spring is tightly attached to one end of the shaft sleeve near one end, the telescopic spring is tightly attached to the carbon half ring at the other end, and the carbon half ring is slidably connected to an elastic rope on the inside.
[0007] As a further optimization of the present invention, there are two carbon half rings, which are rotated 180° around the axis of the shaft head and overlap with each other, and the side of the carbon half ring close to the shaft sleeve is tightly attached to the shaft sleeve, and the carbon half ring slides tightly on the outside of the shaft head.
[0008] As a further optimization of the present invention, a groove is provided at the center of the horizontal surface inside the carbon half ring, and the elastic rope connects the two carbon half rings to form a full circle.
[0009] As a further optimization of the present invention, the minimum diameter of the retaining spring is much larger than the diameter of the shaft head, and the minimum diameter of the retaining spring is much smaller than the minimum diameter of the telescopic spring, and the telescopic spring is placed outside the shaft head.
[0010] As a further optimization of the present invention, the thickness of the retaining spring is much smaller than the width of the retaining groove, the retaining spring and the carbon half ring are parallel to each other, and the retaining spring is arranged between the telescopic spring and the ring plate.
[0011] As a further optimization of the present invention, the elastic rubber ring is arranged on the protruding ring plate portion of the slip ring, the elastic rubber ring is in close contact with the inner wall of the fixed cylinder, and the centers of the elastic rubber ring, the slip ring and the ring plate are at the same point.
[0012] As a further optimization of this utility model, the straight-line distance from the elastic rubber ring to the axis centerline of the shaft head is greater than the closest distance from the fixed tube to the axis centerline of the shaft head, and the maximum straight-line distance from the slip ring to the axis centerline of the shaft head is much smaller than the closest distance from the fixed tube to the axis centerline of the shaft head.
[0013] Compared with the prior art, the beneficial effects of the present invention are:
[0014] The present invention provides a plurality of ring plates, a plurality of sliding rings, a plurality of elastic rubber rings, a plurality of fixing sleeves, a plurality of fixing sleeves and a plurality of fixing sleeves are provided. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 For this utility model Figure 1Schematic diagram of the structure at A in the middle;
[0017] Figure 3 This is a schematic diagram of the internal structure of the fixed cylinder of the utility model;
[0018] Figure 4 This is a schematic diagram of the card slot structure of the utility model;
[0019] Figure 5 This is a schematic diagram of the elastic rope structure of the utility model;
[0020] Figure 6 This is a schematic diagram of the carbon half-ring structure of the utility model;
[0021] Figure 7 This is a schematic diagram of the slip ring structure of the utility model.
[0022] In the figure: 1. shaft body; 2. shaft head; 21. ring plate; 22. slip ring; 23. elastic rubber ring; 3. shaft sleeve; 31. retaining frame; 32. needle roller; 4. fixing cylinder; 41. slot; 42. retaining spring; 43. telescopic spring; 44. carbon half ring; 45. elastic rope. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.
[0025] See also Figure 1-7 , the utility model provides a technical solution:
[0026] A special long-life bearing includes a shaft body 1, a shaft head 2 and a shaft sleeve 3. The shaft body 1 is fixedly connected to the shaft head 2 on the outside, the shaft head 2 is fixedly connected to the ring plate 21 on the outside, the slip ring 22 is slidably connected to the inside of the ring plate 21, and the slip ring 22 is fixedly connected to the inside of the slip ring 22. The shaft sleeve 3 is slidably connected to the outside of the shaft head 2, a retaining frame 31 is arranged on the inside of the shaft sleeve 3, and a needle roller 32 is rotatably arranged on the inside of the retaining frame 31. The shaft sleeve 3 is fixedly connected to a fixed cylinder 4 near one end of the shaft body 1, a slot 41 is provided on the inside of the fixed cylinder 4, and a retaining spring 42 is engaged and connected inside the slot 41. The retaining spring 42 is tightly attached to a telescopic spring 43 near one end of the shaft sleeve 3, and the other end of the telescopic spring 43 is tightly attached to a carbon half ring 44. The inside of the carbon half ring 44 is slidably connected to an elastic rope 45.
[0027] As a further implementation of this solution, there are two carbon half rings 44. The carbon half rings 44 are rotated 180 degrees with the axis of the shaft head 2 as the center, and overlap with each other. The side of the carbon half ring 44 close to the shaft sleeve 3 is tightly attached to the shaft sleeve 3. The carbon half ring 44 slides tightly on the outside of the shaft head 2 to prevent impurities from entering between the shaft sleeve 3 and the shaft head 2.
[0028] As a further implementation of this solution, a groove is provided at the center of the horizontal surface of the inner side of the carbon half ring 44, and the elastic rope 45 connects the two carbon half rings 44 to form a full circle, so that the carbon half ring 44 always seals the gap formed by the shaft sleeve 3 and the shaft head 2;
[0029] As a further implementation of this solution, the minimum diameter of the retaining spring 42 is much larger than the diameter of the shaft head 2, and the minimum diameter of the retaining spring 42 is much smaller than the minimum diameter of the telescopic spring 43. The telescopic spring 43 is placed outside the shaft head 2, which facilitates the fixed restriction of the position of the telescopic spring 43.
[0030] As a further implementation of this solution, the thickness of the retaining spring 42 is much smaller than the width of the retaining groove 41, the retaining spring 42 and the carbon half ring 44 are parallel to each other, and the retaining spring 42 is arranged between the telescopic spring 43 and the ring plate 21, so that the retaining spring 42 can restrict the carbon half ring 44 through the telescopic spring 43;
[0031] As a further implementation of this solution, an elastic rubber ring 23 is provided on the portion of the slip ring 22 protruding from the ring plate 21. The elastic rubber ring 23 is in close contact with the inner wall of the fixed cylinder 4. The centers of the elastic rubber ring 23, the slip ring 22, and the ring plate 21 are co-centered, thereby preventing impurities in the operating environment of the bearing from entering the inner side of the fixed cylinder 4.
[0032] As a further implementation of this solution, the straight-line distance from the elastic rubber ring 23 to the axis centerline of the shaft head 2 is greater than the closest distance from the fixed cylinder 4 to the axis centerline of the shaft head 2, and the maximum straight-line distance from the slip ring 22 to the axis centerline of the shaft head 2 is much smaller than the closest distance from the fixed cylinder 4 to the axis centerline of the shaft head 2, so that the elastic rubber ring 23, the slip ring 22 and the ring plate 21 have a good sealing effect between the fixed cylinder 4 and the shaft head 2.
[0033] Working process: When the crosshead bearing is used on mechanical equipment with a poor working environment, the bearing sleeve 3 is subjected to external force and rotates stably on the outside of the shaft head 2 through the retaining frame 31 and the needle roller 32. The rotation of the sleeve 3 can drive one end of the sleeve to fix the fixed cylinder 4 and rotate on the outside of the shaft head 2 at the same time. When the fixed cylinder 4 is installed on the outside of the shaft head 2, the ring plate 21 fixed to the outside of the shaft head 2 is connected to the sliding ring 22 on the inner side of the ring plate 21 so that the elastic rubber ring 23 is tightly attached to the inner side of the fixed cylinder 4, thereby generating a certain degree of The deformed elastic rubber ring 23 can be relatively stably restricted to the inner side of the fixed cylinder 4, so that when the fixed cylinder 4 rotates with the shaft sleeve 3, the fixed cylinder 4 can drive the slip ring 22 to slide on the inner side of the ring plate 21 through the elastic rubber ring 23, thereby serving as a first protective structure to prevent impurities on the outside of the fixed cylinder 4 from entering the inner side of the fixed cylinder 4. At the same time, a retaining spring 42 is engaged with the retaining groove 41 provided on the inner side of the fixed cylinder 4. The retaining spring 42 squeezes the two carbon half rings 44 relatively stably to the outer side of the shaft sleeve 3 through the telescopic spring 43, and the carbon half rings 44 are The two carbon half rings 44 are restricted by the elastic rope 45 and are tightly attached to the outside of the shaft head 2. At this time, the circular ring formed by the two carbon half rings 44 can block the gap between the shaft sleeve 3 and the shaft head 2. When the fixed cylinder 4 rotates with the shaft sleeve 3, the retaining spring 42 rotates or stops according to the friction force it receives from the fixed cylinder 4, and then the retaining spring 42 indirectly controls the rotation of the carbon half ring 44 through the telescopic spring 43 according to its rotation. After the carbon half ring 44 is actively or passively subjected to rotational wear, the carbon half ring 44 is under the action of the telescopic spring 43 and the elastic rope 45. 44 is always tightly attached to the connection gap between the sleeve 3 and the shaft head 2. As a second protective structure, it can effectively prevent impurities that break through the first protective structure from entering between the sleeve 3 and the shaft head 2, and the carbon powder generated by the wear of the carbon half ring 44 can lubricate the rotation between the inner needle roller 32 of the sleeve 3 and the shaft head 2. This device structure avoids the entry of foreign particles into the connection opening position of the crosshead bearing sleeve 3 and the shaft head 2, ensures the smooth sliding of the inner needle roller 32 of the sleeve 3 and the surface of the shaft head 2, and guarantees the service life of the bearing.
[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A specially made long-life bearing, characterized by: The invention comprises a shaft body (1), a shaft head (2) and a shaft sleeve (3), and is characterized in that: the shaft body (1) is fixedly connected to the shaft head (2) on the outside, the shaft head (2) is fixedly connected to the ring plate (21) on the outside, the ring plate (21) is slidably connected to the slip ring (22) on the inside, the slip ring (22) is fixedly connected to the inside of the elastic rubber ring (23), the shaft head (2) is slidably connected to the shaft sleeve (3), the shaft sleeve (3) is provided with a retaining frame (31) on the inside, and the retaining frame (31) is provided with a retaining frame (31). 1) A roller needle (32) rotates inside, and a fixed cylinder (4) is fixedly connected to one end of the sleeve (3) close to the shaft body (1). A clamping groove (41) is provided inside the fixed cylinder (4), and a clamping spring (42) is clamped and connected inside the clamping groove (41). The clamping spring (42) is in close contact with a telescopic spring (43) at one end close to the sleeve (3), and the other end of the telescopic spring (43) is in close contact with a carbon half ring (44). An elastic rope (45) is slidably connected inside the carbon half ring (44).
2. A specially made long-life bearing according to claim 1, characterized in that: There are two carbon half rings (44) in total. The carbon half rings (44) are rotated 180 degrees with the axis of the shaft head (2) as the center of the circle to overlap each other. The side of the carbon half ring (44) close to the shaft sleeve (3) is tightly attached to the shaft sleeve (3), and the carbon half ring (44) slides tightly on the outside of the shaft head (2).
3. The specially made long-life bearing according to claim 1, characterized in that: A groove is provided at the center of the inner horizontal surface of the carbon half ring (44), and the elastic rope (45) connects the two carbon half rings (44) to form a full circle.
4. A specially made long-life bearing according to claim 1, characterized in that: The minimum diameter of the retaining spring (42) is much larger than the diameter of the shaft head (2), and the minimum diameter of the retaining spring (42) is much smaller than the minimum diameter of the telescopic spring (43), and the telescopic spring (43) is arranged outside the shaft head (2).
5. The specially made long-life bearing according to claim 1, characterized in that: The thickness of the clamping spring (42) is much smaller than the width of the clamping groove (41), the clamping spring (42) and the carbon half ring (44) are parallel to each other, and the clamping spring (42) is arranged between the telescopic spring (43) and the ring plate (21).
6. The specially made long-life bearing according to claim 1, characterized in that: The elastic rubber ring (23) is arranged on the portion of the slip ring (22) protruding from the ring plate (21), the elastic rubber ring (23) is in close contact with the inner wall of the fixed cylinder (4), and the centers of the elastic rubber ring (23), the slip ring (22) and the ring plate (21) are at the same point.
7. The specially made long-life bearing according to claim 1, characterized in that: The linear distance between the elastic rubber ring (23) and the axis center line of the shaft head (2) is greater than the closest distance between the fixed cylinder (4) and the axis center line of the shaft head (2), and the maximum linear distance between the slip ring (22) and the axis center line of the shaft head (2) is much smaller than the closest distance between the fixed cylinder (4) and the axis center line of the shaft head (2).