Self-lubricating hollow rolling body structure
By inlaid with self-lubricated wear-resistant sleeves in the center of the hollow rolling element and cooperate with the pillars, the problems of short service life and pillar wear of large hollow roller bearings are solved, and a long-life and high-reliability self-lubricated hollow rolling element structure is achieved, extending the service life and reducing maintenance costs.
Patent Information
- Application Number
- CN202422116915.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-08-30
AI Technical Summary
Large hollow roller bearings have short service life in the metallurgical mining industry, traditional cage processing is difficult and costly, and ordinary hollow roller structures are prone to column breakage or wear failure, affecting the production efficiency of the main machine.
A self-lubricated hollow rolling element structure is designed, with a self-lubricated wear-resistant sleeve ring in the central through hole. The center of the sleeve ring is equipped with a pillar, and the support is intersected with the sleeve ring. The pillar runs through both ends of the hollow rolling element. The self-lubricated wear-resistant sleeve ring is intersected with the inner wall of the central through hole to position the pillar to avoid dissipation.
Through the wear resistance of self-lubricating wear-resistant sleeves, the support columns can be avoided from being worn out or wear failure, ensure that the rolling elements operate normally when they are insufficient lubricated, extend their service life, and the sleeves can be replaced regularly to save maintenance costs.
Smart Images
Figure CN222950237U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of hollow rolling bodies, and in particular relates to a self-lubricating hollow rolling body structure. Background Art
[0002] Large bearings are widely used in the metallurgical and mining industries. Due to the large size of the bearings, the traditional integrated cages are difficult to process and the cost is high. Ordinary hollow roller structures often fail due to the wear and tear of the pillars. This causes the bearings to fail prematurely and affects the production efficiency of the main machine. In order to increase the service life of this type of bearings, a new type of long-life, high-reliability, self-lubricating hollow rolling element structure is needed. Summary of the invention
[0003] In view of the defects of the prior art mentioned above, the purpose of the utility model is to provide a self-lubricating hollow rolling element structure to improve the service life and rotation speed of large hollow roller bearings.
[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a self-lubricating hollow rolling body structure, a self-lubricating wear-resistant ring is installed in the central through hole of the hollow rolling body, a pillar is passed through the center of the self-lubricating wear-resistant ring, the pillar and the self-lubricating wear-resistant ring are interference fit, and the pillar passes through both ends of the hollow rolling body.
[0005] Furthermore, the self-lubricating wear-resistant collar is interference-fitted with the inner wall of the central through hole.
[0006] Furthermore, there are no washers at both ends of the pillar, and the pillar is positioned by the interference fit between the pillar and the self-lubricating wear-resistant ring, and the interference fit between the self-lubricating wear-resistant ring and the inner wall of the central through hole to prevent the pillar and the hollow rolling body from loosening.
[0007] Furthermore, the self-lubricating wear-resistant collar is a collar made of graphite or polytetrafluoroethylene.
[0008] Furthermore, the central through hole includes assembly parts at both ends and a connecting part in the middle, the assembly parts at both ends and the connecting part in the middle are coaxially arranged, and the two self-lubricating wear-resistant rings are respectively assembled into the assembly parts at both ends of the central through hole.
[0009] Furthermore, the diameter of the assembly portion is larger than the diameter of the connecting portion, the assembly portions at both ends of the central through hole are symmetrically arranged, and the self-lubricating wear-resistant collar is interference fit with the inner wall of the assembly portion.
[0010] Furthermore, the inner diameter of the self-lubricating wear-resistant collar is smaller than the diameter of the connecting portion, the diameter of the connecting portion is larger than the diameter of the pillar, the pillar is interference supported by two self-lubricating wear-resistant collars, and the connecting portion and the pillar are clearance-matched.
[0011] Furthermore, the assembly portion and the connecting portion are transitioned through a conical slope.
[0012] The beneficial effects of the utility model are as follows: a self-lubricating wear-resistant collar is inlaid in the center of the hollow rolling body, which has wear-resistant performance, avoids the failure of the support due to wear and tear, and ensures the normal operation of the rolling body when lubrication is insufficient; the self-lubricating wear-resistant collar can be replaced regularly for the rolling body and reused, saving the maintenance cost of the main engine. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the structure of the self-lubricating hollow rolling element of the utility model;
[0014] In the figure: 1. Hollow rolling body, 2. Self-lubricating wear-resistant sleeve, 3. Pillar, 4. Center through hole assembly part, 5. Center through hole connecting part. DETAILED DESCRIPTION
[0015] In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0016] See attached Figure 1 A self-lubricating hollow rolling body structure, wherein a self-lubricating wear-resistant collar 2 is assembled in the central through hole of the hollow rolling body 1, and a pillar 3 is passed through the center of the self-lubricating wear-resistant collar 2. The pillar 3 is interference fit with the self-lubricating wear-resistant collar 2, and the pillar 3 passes through both ends of the hollow rolling body 1.
[0017] Based on the above technical solution, a self-lubricating wear-resistant ring 2 is inlaid in the center of the hollow rolling body 1. The self-lubricating wear-resistant ring 2 has wear-resistant properties, which can prevent the support 3 from being worn off or failing due to wear, and at the same time ensure the normal operation of the rolling body when lubrication is insufficient; the rolling body can be regularly replaced with a self-lubricating wear-resistant ring for reuse, saving the maintenance cost of the main engine.
[0018] Furthermore, the self-lubricating wear-resistant collar 2 is inserted into the central through hole by interference fit with the inner wall of the central through hole.
[0019] Furthermore, there are no washers at both ends of the pillar 3, and the pillar 3 is positioned by the interference fit between the pillar 3 and the self-lubricating wear-resistant collar 2, and the interference fit between the self-lubricating wear-resistant collar 2 and the inner wall of the central through hole, so as to prevent the pillar 3 from loosening from the hollow rolling body 1. The washers are eliminated, the structure is simplified, and the problems of breakage and loosening easily caused by the washer connection are avoided, and the stability of the roller assembly is improved. The function of the washers is to prevent the pillar from being separated from the roller. This embodiment prevents the pillar from being separated from the roller through the interference fit structure between the pillar and the self-lubricating wear-resistant collar. At the same time, the self-lubricating wear-resistant collar can provide lubrication for the roller, avoid the wear of the pillar, and facilitate replacement and maintenance.
[0020] Furthermore, in order to ensure the self-lubricating performance of the self-lubricating wear-resistant ring 2, the self-lubricating wear-resistant ring adopts solid lubricating material, such as the self-lubricating wear-resistant ring 2 is a ring made of graphite or polytetrafluoroethylene, and solid lubricating materials of other materials can also be used.
[0021] Furthermore, the central through hole includes assembly parts 4 at both ends and a connecting part 5 in the middle, the assembly parts 4 at both ends and the connecting part 5 in the middle are coaxially arranged, and the two self-lubricating wear-resistant rings 2 are respectively assembled into the assembly parts 4 at both ends of the central through hole.
[0022] Furthermore, the diameter of the assembly portion 4 is larger than the diameter of the connecting portion 5, and a certain space is reserved for the assembly of the self-lubricating wear-resistant collar 2. The assembly portions 4 at both ends of the central through hole are symmetrically arranged, and the self-lubricating wear-resistant collar 2 is interference fit with the inner wall of the assembly portion 4.
[0023] Furthermore, in order to avoid wear of the pillar 3, the inner diameter of the self-lubricating wear-resistant ring 2 is smaller than the diameter of the connecting part 5, and the diameter of the connecting part 5 is larger than the diameter of the pillar 3. The pillar 3 is supported by two self-lubricating wear-resistant rings 2 with interference fit, and the connecting part 5 and the pillar 3 are clearance-matched to avoid wear.
[0024] Furthermore, the assembly portion 4 and the connecting portion 5 are transitioned through a conical slope.
[0025] The novel long-life, high-reliability, self-lubricating hollow rolling element structure of this embodiment has the design features of long service life and self-lubricating effect, thereby increasing the service life of the main machine.
[0026] It should be noted that the parts not described in detail in the present invention are prior art.
[0027] The above examples are only the best embodiments of the present invention. Obviously, the present invention is not limited to the above examples, and there are many variations. All variations that can be directly derived or associated with the contents disclosed by a person skilled in the art should be considered as the protection scope of the present invention.
Claims
1. A self-lubricating hollow rolling element structure, characterized in that: A self-lubricating wear-resistant collar is installed in the central through hole of the hollow rolling body, a pillar is passed through the center of the self-lubricating wear-resistant collar, the pillar is interference fit with the self-lubricating wear-resistant collar, and the pillar passes through both ends of the hollow rolling body.
2. A self-lubricating hollow rolling element structure according to claim 1, characterized in that: The self-lubricating wear-resistant collar is interference-fitted with the inner wall of the central through hole.
3. A self-lubricating hollow rolling element structure according to claim 2, characterized in that: There are no washers at both ends of the pillar. The pillar is positioned by the interference fit between the pillar and the self-lubricating wear-resistant ring, and the interference fit between the self-lubricating wear-resistant ring and the inner wall of the central through hole to prevent the pillar from loosening from the hollow rolling body.
4. The self-lubricating hollow rolling element structure according to claim 1, characterized in that: The self-lubricating wear-resistant sleeve ring is a sleeve ring made of graphite material or a sleeve ring made of polytetrafluoroethylene material.
5. A self-lubricating hollow rolling element structure according to any one of claims 1 to 4, characterized in that: The central through hole comprises assembly parts at two ends and a connecting part in the middle, the assembly parts at two ends and the connecting part in the middle are coaxially arranged, and the two self-lubricating wear-resistant sleeve rings are respectively assembled into the assembly parts at two ends of the central through hole.
6. A self-lubricating hollow rolling element structure according to claim 5, characterized in that: The diameter of the assembly part is larger than the diameter of the connecting part, the assembly parts at both ends of the central through hole are symmetrically arranged, and the self-lubricating wear-resistant collar is interference-fitted with the inner wall of the assembly part.
7. The self-lubricating hollow rolling element structure according to claim 5, characterized in that: The inner diameter of the self-lubricating wear-resistant collar is smaller than the diameter of the connecting portion, and the diameter of the connecting portion is larger than the diameter of the pillar. The pillar is interference supported by two self-lubricating wear-resistant collars, and the connecting portion and the pillar are clearance-matched.
8. The self-lubricating hollow rolling element structure according to claim 5, characterized in that: The assembly portion and the communication portion are transitioned through a conical slope.