Bearing structure capable of stably operating under high load
By designing specific structures in crosshead bearings, including holes, oil storage holes and memory foam columns, uniform injection and distribution of lubricating oil is achieved, solving the problem of burns and wears of bearings under high loads, and ensuring the stable operation of the bearings.
Patent Information
- Application Number
- CN202421821572.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-30
AI Technical Summary
Under high load conditions, burns are prone to inside the crosshead bearing, and the needle or shaft head is prone to excessive wear, affecting the stable operation of the bearing.
A bearing structure including a shaft body, shaft head, dustproof sleeve and shaft sleeve is designed. By setting holes, oil storage holes, elastic telescopic sleeves, circular plates, extrusion columns, triangular grooves and memory foam columns, uniform injection and distribution of lubricating oil are achieved, and friction and wear are reduced.
This structure can maintain the stable operation of the bearing under high load conditions, avoid burns, and extend the service life of the needle roller or shaft head.
Smart Images
Figure CN222797901U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearings, in particular to a bearing structure that operates stably under high load. Background Art
[0002] A bearing is a mechanical element that allows relative motion. It is used to support the load of the rotating shaft and the position of the rotating parts in the machine, reduce the friction resistance generated during the motion, and provide support and guidance for its connected components.
[0003] In the process of using the crosshead bearing, since the structure of the crosshead bearing is relatively complex and the crosshead bearing needs to transmit high load pressure at various angles, the needle roller on the inside of the crosshead bearing used to improve the transmission performance of the machinery connected to the crosshead bearing needs to have relatively good smoothness with the shaft head. However, when the crosshead bearing is subjected to increased load force, the friction resistance between the needle roller and the shaft head also increases, and the lubricating oil between the needle roller and the bearing is not convenient to be evenly injected between the needle roller and the bearing. When the crosshead bearing is subjected to high load force for a long time, burning is likely to occur inside the crosshead bearing, and excessive wear is caused to the needle roller or the shaft head, affecting the stable operation of the crosshead bearing. Therefore, a bearing structure that can operate stably under high load is proposed to address the above problems. Utility Model Content
[0004] The purpose of the utility model is to provide a bearing structure that can operate stably under high loads, so as to solve the problem that the lubricating oil between the needle roller and the bearing is inconvenient to be evenly injected between the needle roller and the bearing, and when the crosshead bearing is subjected to high loads for a long time, the crosshead bearing is prone to burns, and excessive wear is caused to the needle roller or the shaft head, thereby affecting the stable operation of the crosshead bearing.
[0005] To achieve the above objectives, the present invention provides the following technical solutions:
[0006] The cam is provided with an cam which is fixed on the outside of the shaft body and is provided with a dust cover, the cam is provided with a hole on the inside of the shaft head, the cam is provided with an oil storage hole, the cam is provided with an elastic telescopic sleeve on the inside of the oil storage hole, the other end of the elastic telescopic sleeve is fixedly connected to a circular plate, the other side of the circular plate is fixedly connected to an extrusion column, the inside of the extrusion column is provided with a triangular groove, a memory foam column is placed on the inside of the elastic telescopic sleeve, the outer side of the shaft head is slidably connected to the sleeve, the inside of the sleeve is provided with a retaining rack, the inside of the retaining rack is rotatably connected to a needle roller, the inside of the sleeve is engaged with a card cover, the inside of the shaft head is fixedly connected to an oiling nozzle, the inside of the oiling nozzle is fixedly connected to a telescopic spring, and the other end of the telescopic spring is fixedly connected to a ball blocking ball.
[0007] As a further optimization of the present invention, the inner diameter of the card cover is greater than or equal to the maximum diameter of the oiling nozzle, and the side of the card cover close to the shaft head does not have any contact with the outer side of the shaft head.
[0008] As a further optimization of the present invention, a plurality of holes are opened on the inner side of the shaft head, the holes are evenly distributed on the inner side of the shaft head, and the holes are interconnected with the oil storage hole and the oil filling nozzle.
[0009] As a further optimization of the present invention, the extrusion column is in the shape of a platform as a whole, the extrusion column slides inside the oil storage hole, and the maximum diameter and minimum diameter of the extrusion column are the same as the maximum diameter and minimum diameter of the oil storage hole.
[0010] As a further optimization of the present invention, the side of the triangular groove close to the circular plate is a vertical plane, the side of the triangular groove away from the circular plate is an inclined surface, and the triangular groove is arranged in the partial section of the extrusion column close to the circular plate.
[0011] As a further optimization of the present invention, the circular plate slides inside the oil storage hole, the circular plate is in close contact with the memory foam column, and the diameter of the circular plate is the same as the maximum diameter of the oil storage hole.
[0012] As a further optimized content of the present invention, the minimum diameter of the extrusion column is the same as the outer diameter of the oil injection nozzle, and the smaller diameter end of the extrusion column faces the oil injection nozzle.
[0013] Compared with the prior art, the beneficial effects of the present invention are:
[0014] In the utility model, by providing the holes, oil storage holes, elastic expansion sleeve, circular plate, extrusion column, triangular groove and memory foam column, during the process of using the bearing, the card cover engaged on the inner side of the sleeve can be removed, and the oil filling device can be used to align the oil filling nozzle on the inner side of the sleeve, so that the lubricating oil enters the oil storage hole on the inner side of the shaft head through the squeezing ball. Then, when the bearing is in use, the compressed memory foam column and the elastic expansion sleeve can push the extrusion column to slide in the oil storage hole when performing the recovery and extension work, so as to slowly and evenly squeeze the lubricating oil in the oil storage hole from the hole into between the needle roller and the shaft head, so that the bearing has better working smoothness, avoids the crosshead bearing being subjected to high load force for a long time, avoids burning inside the crosshead bearing, prevents excessive wear of the dry needle roller or shaft head under high load, and ensures the stable operation of the crosshead bearing. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2This is a schematic diagram of the internal structure of the shaft sleeve of the utility model;
[0017] Figure 3 This is a schematic diagram of the new structure of the practical card cover;
[0018] Figure 4 This is a schematic diagram of the shaft head structure of the utility model;
[0019] Figure 5 This is a schematic diagram of the internal structure of the shaft head of the utility model;
[0020] Figure 6 This is a schematic diagram of the extruded column structure of the utility model.
[0021] In the figure: 1. Shaft body; 2. Shaft head; 21. Hole; 22. Oil storage hole; 23. Elastic expansion sleeve; 24. Round plate; 25. Extrusion column; 251. Triangular groove; 26. Memory foam column; 3. Dust cover; 4. Shaft sleeve; 41. Cage; 42. Needle roller; 43. Card cover; 5. Oiling nozzle; 51. Expansion spring; 52. Ball plug. DETAILED DESCRIPTION
[0022] 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.
[0023] 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.
[0024] See also Figure 1-6 , the utility model provides a technical solution:
[0025] A bearing structure that operates stably under high load includes a shaft body 1, a shaft head 2, a dust sleeve 3 and a shaft sleeve 4. The shaft body 1 is fixedly connected to the shaft head 2 on the outside, the shaft head 2 is fixedly connected to the dust sleeve 3 on the outside, a hole 21 is opened on the inside of the shaft head 2, an oil storage hole 22 is opened on the inside of the shaft head 2, an elastic telescopic sleeve 23 is fixedly connected to the inside of the oil storage hole 22, the other end of the elastic telescopic sleeve 23 is fixedly connected to a circular plate 24, the other side of the circular plate 24 is fixedly connected to an extrusion column 25, a triangular groove 251 is opened on the inside of the extrusion column 25, a memory sponge column 26 is arranged on the inside of the elastic telescopic sleeve 23, the shaft head 2 is slidingly connected to the shaft sleeve 4 on the outside, a retaining frame 41 is arranged on the inside of the shaft sleeve 4, a needle roller 42 is rotatably connected to the inside of the retaining frame 41, a card cover 43 is clamped and connected to the inside of the shaft sleeve 4, an oiling nozzle 5 is fixedly connected to the inside of the oiling nozzle 5, a telescopic spring 51 is fixedly connected to the inside of the telescopic spring 51, and a blocking ball 52 is fixedly connected to the other end of the telescopic spring 51.
[0026] As a further implementation of this solution, the inner diameter of the card cover 43 is greater than or equal to the maximum diameter of the oiling nozzle 5, and the side of the card cover 43 close to the shaft head 2 does not have any contact with the outer side of the shaft head 2, so as to facilitate the injection of lubricating oil into the inner side of the shaft head 2;
[0027] As a further implementation of this solution, a plurality of holes 21 are opened on the inner side of the shaft head 2. The holes 21 are evenly distributed on the inner side of the shaft head 2. The holes 21 are connected to the oil storage hole 22 and the oil injection nozzle 5, so as to facilitate the slow and even injection of lubricating oil between the needle roller 42 and the shaft head 2.
[0028] As a further implementation of this solution, the squeezing column 25 is generally in the shape of a platform column. The squeezing column 25 slides inside the oil storage hole 22. The maximum diameter and minimum diameter of the squeezing column 25 are the same as the maximum diameter and minimum diameter of the oil storage hole 22, so as to facilitate squeezing the lubricating oil in the oil storage hole 22.
[0029] As a further implementation of this solution, the triangular groove 251 is formed as a vertical plane on the side close to the circular plate 24, and as an inclined surface on the side away from the circular plate 24. The triangular groove 251 is provided in the portion of the extrusion column 25 close to the circular plate 24, which can reduce the probability of lubricating oil leaking from the circular plate 24 and the inner side of the shaft head 2 under the thrust of the extrusion column 25.
[0030] As a further implementation of this solution, the circular plate 24 slides inside the oil storage hole 22, the circular plate 24 is in close contact with the memory foam column 26, and the diameter of the circular plate 24 is the same as the maximum diameter of the oil storage hole 22, which can ensure that the extrusion column 25 moves linearly in the oil storage hole 22;
[0031] As a further implementation of this scheme, the minimum diameter of the extrusion column 25 is the same as the outer diameter of the oiling nozzle 5, and the smaller diameter end of the extrusion column 25 faces the oiling nozzle 5, which facilitates the injection of lubricating oil into the oil storage hole 22 and ensures that the lubricating oil can be stored in the oil storage hole 22 for a short time.
[0032] Working process: When using the crosshead bearing, the crosshead bearing is installed on the machine in which it is used, and then the card cover 43 engaged on the inner side of the sleeve 4 is opened to expose the oiling nozzle 5, so that the user can use the oiling device to align the oiling nozzle 5 with the oiling nozzle 5 and inject lubricating oil into the inner side of the oiling nozzle 5. During the injection process of the lubricating oil, the injection pressure exerts a thrust on the blocking ball 52 on the inner side of the oiling nozzle 5, so that the blocking ball 52 exerts a compressive force on the telescopic spring 51 on the inner side of the oiling nozzle 5, so that the lubricating oil enters the oil storage hole 22 opened on the inner side of the shaft head 2 through the oiling nozzle 5, and the lubricating oil gradually injected into the oil storage hole 22 is completely fitted into the oil storage hole 22. The squeezing column 25 acts as a thrust, so that the squeezing column 25 pushes the circular plate 24 to which it is fixed to move stably in the oil storage hole 22, and the circular plate 24 exerts a compressive force on the elastic telescopic sleeve 23 to which it is fixed and the memory foam column 26 in the elastic telescopic sleeve 23, so that there is sufficient space in the oil storage hole 22 to accommodate the lubricating oil. After the oil storage hole 22 is filled with lubricating oil, the connection between the oil filling device and the oil filling nozzle 5 is released, so that the blocking ball 52 in the oil filling nozzle 5 can be blocked again under the restoring force of the telescopic spring 51. When the crosshead bearing is used, the shaft sleeve 4 of the crosshead bearing is opened. The retainer 41 and the plurality of needle rollers 42 slide on the outside of the shaft head 2. At the same time, as the lubricating oil between the needle roller 42 and the shaft head 2 is consumed, the pressure between the needle roller 42 and the shaft head 2 is reduced. At this time, the memory sponge column 26 and the elastic telescopic sleeve 23 on the inside of the shaft head 2 can slowly and wholeheartedly restore their work, and then the memory sponge column 26 and the elastic telescopic sleeve 23 can push the extrusion column 25 to move in the oil storage hole 22. At the same time, the extrusion column 25 can squeeze the lubricating oil in the oil storage hole 22, so that the lubricating oil in the oil storage hole 22 is evenly injected from the plurality of holes 21 into the space between the needle roller 42 and the shaft head 2 under the action of the extrusion column 25. The triangular groove 251 opened on the inner side of the extrusion column 25 can increase the extrusion force of the extrusion column 25 on the lubricating oil, reduce the probability of the lubricating oil leaking from the close contact position between the circular plate 24 and the shaft head 2 due to extrusion, and the lubricating oil evenly injected between the needle roller 42 and the shaft head 2 follows the operation of the crosshead bearing, fully lubricating the high-load force contact between the needle roller 42 and the shaft head 2, avoiding the crosshead bearing from being subjected to high load force for a long time, preventing the crosshead bearing from being burned inside, preventing excessive wear of the dry needle roller 42 or the shaft head 2 under high load, and ensuring the stable operation of the crosshead bearing.
[0033] 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 bearing structure that operates stably under high load, characterized in that: The invention comprises a shaft body (1), a shaft head (2), a dust cover (3) and a shaft sleeve (4), 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 dust cover (3) on the outside, the shaft head (2) is provided with a hole (21) on the inside, the shaft head (2) is provided with an oil storage hole (22) on the inside, an elastic telescopic sleeve (23) is fixedly connected to the inside of the oil storage hole (22), the elastic telescopic sleeve (23) is fixedly connected to a circular plate (24) on the other end, the circular plate (24) is fixedly connected to an extrusion column (25) on the other side, and the extrusion column (21) is provided with a hole (21) on the inside, the shaft head (2) is provided with an oil storage hole (22) on the inside, the oil storage hole (22) is fixedly connected to the inside of the oil storage hole (22), the elastic telescopic sleeve (23) is fixedly connected to the other end of the elastic telescopic sleeve (23), the circular plate (24) is fixedly connected to the other side of the circular plate (24), and the extrusion column (25) is fixedly connected to the other side of the circular plate (24). 5) is provided with a triangular groove (251) on the inner side, a memory sponge column (26) is arranged on the inner side of the elastic telescopic sleeve (23), the outer side of the shaft head (2) is slidably connected with a shaft sleeve (4), the inner side of the shaft sleeve (4) is provided with a retaining frame (41), the inner side of the retaining frame (41) is rotatably connected with a roller needle (42), the inner side of the shaft sleeve (4) is snap-connected with a card cover (43), the inner side of the shaft head (2) is fixedly connected with an oiling nozzle (5), the inner side of the oiling nozzle (5) is fixedly connected with a telescopic spring (51), and the other end of the telescopic spring (51) is fixedly connected with a blocking ball (52).
2. A bearing structure capable of stable operation under high load according to claim 1, characterized in that: The inner diameter of the card cover (43) is greater than or equal to the maximum diameter of the oil injection nozzle (5), and the side of the card cover (43) close to the shaft head (2) does not have any contact with the outer side of the shaft head (2).
3. A bearing structure capable of stable operation under high load according to claim 1, characterized in that: A plurality of holes (21) are provided on the inner side of the shaft head (2), the holes (21) are evenly distributed on the inner side of the shaft head (2), and the holes (21) are communicated with the oil storage hole (22) and the oil injection nozzle (5).
4. A bearing structure capable of stable operation under high load according to claim 1, characterized in that: The extrusion column (25) is in the shape of a platform column as a whole. The extrusion column (25) slides inside the oil storage hole (22). The maximum diameter and the minimum diameter of the extrusion column (25) are the same as the maximum diameter and the minimum diameter of the oil storage hole (22).
5. A bearing structure capable of stable operation under high load according to claim 1, characterized in that: The side of the triangular groove (251) close to the circular plate (24) is a vertical plane, the side of the triangular groove (251) away from the circular plate (24) is an inclined surface, and the triangular groove (251) is arranged in a section of the extrusion column (25) close to the circular plate (24).
6. A bearing structure capable of stable operation under high load according to claim 1, characterized in that: The circular plate (24) slides inside the oil storage hole (22), the circular plate (24) is in close contact with the memory foam column (26), and the diameter of the circular plate (24) is the same as the maximum diameter of the oil storage hole (22).
7. A bearing structure capable of stable operation under high load according to claim 1, characterized in that: The minimum diameter of the extrusion column (25) is the same as the outer diameter of the oil injection nozzle (5), and the end of the extrusion column (25) with a smaller diameter faces the oil injection nozzle (5).