High-speed shaft end cover structure of mining speed reducer and mining speed reducer
By setting up a cooling cavity and a lubricating cavity in the end cover structure of the high-speed shaft of the mining reducer, and using the circulating cooling water and lubricating oil for step cooling, the problem of poor heat dissipation of the high-speed shaft of the existing mining reducer is solved. Extends seal life and reduces maintenance costs.
Patent Information
- Application Number
- CN202420944064.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The high-speed shaft heat dissipation effect of existing mining reducers is poor, resulting in the seal being overheated, hardened and damaged. The failure of the oil seal will cause oil leakage and oil loss, increase maintenance costs, and affect service life.
A high-speed shaft end cover structure of a mining reducer is designed, including a bearing end cover and a sealing cover. By setting a first annular groove and a second annular groove on the bearing end cover and blocking them with the sealing cover, cooling is formed. The cavity and lubricating cavity are cooled in steps using the circulating cooling water and lubricating oil.
It effectively reduces the temperature of the high-speed shaft, extends the service life of the seal, reduces the risk of oil leakage and oil loss, reduces maintenance costs, and improves the overall performance of the reducer.
Smart Images
Figure CN222377180U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mining reducers, in particular to a mining reducer high-speed shaft end cover structure and a mining reducer. Background Art
[0002] At present, the coolers of the reducers for conveyors are all in the oil pool of the box. The oil pool is cooled. The high-speed shaft uses a forced lubrication pump to extract the oil in the oil pool and pump it into the bearings in the high-speed shaft. The high-speed shaft uses a water jacket structure on the box for cooling. Due to structural limitations, the existing structure mainly relies on the oil flow at the high-speed shaft to dissipate heat, and transfers the heat to the box, relying on the surface of the box for heat dissipation. The heat dissipation is relatively slow and the effect is not good. If the heat cannot be dissipated well, the heat generated by the seal and shaft of the high-speed shaft will be very high during instantaneous high-speed startup and when the lubricating oil flows poorly, the seal will be damaged by overheating and hardening, and the failure of the oil seal will cause oil leakage and oil loss, which is easy to cause key damage such as the reducer high-speed shaft bearing, increasing maintenance costs; in addition, the high-speed rotating seal works at high temperatures for a long time, which will also affect the service life. Summary of the invention
[0003] In order to solve the technical problems existing in the above-mentioned technology, it is necessary to provide a high-speed shaft end cover structure of a mining reducer.
[0004] A high-speed shaft end cover structure of a mining reducer comprises a bearing end cover and a sealing cover; the bearing end cover is provided with a through hole for installing the high-speed shaft, the bearing end cover is provided with a first annular groove, the bearing end cover is provided with a water inlet and a water outlet connected to the first annular groove, the bearing end cover is provided with a second annular groove smaller in size than the first annular groove, the second annular groove is connected through a lubricating oil flow channel provided on the bearing end cover, the bearing end cover is provided with an oil filling hole connected to the second annular groove, the sealing cover is provided with a circular hole concentric with the through hole, the sealing cover is provided on the bearing end cover, the sealing cover blocks the first annular groove and the second annular groove on the bearing end cover, so that the first annular groove forms a cooling cavity for circulating cooling water, and the second annular groove forms a lubricating cavity for circulating lubricating oil.
[0005] Preferably, a sealing groove is provided on the bearing end cover, and a sealing ring is provided in the sealing groove.
[0006] Preferably, the sealing cover is connected to the bearing end cover by fastening screws.
[0007] It is also necessary to provide a mine speed reducer.
[0008] A mining reducer comprises the above-mentioned mining reducer high-speed shaft end cover structure, and the mining reducer high-speed shaft end cover structure is installed on the housing of the mining reducer.
[0009] Compared with the prior art, the utility model provides a high-speed shaft end cover structure of a mining reducer, including a bearing end cover and a sealing cover; the bearing end cover is provided with a through hole for installing the high-speed shaft, the bearing end cover is provided with a first annular groove, the bearing end cover is provided with a water inlet and a water outlet connected to the first annular groove, the bearing end cover is provided with a second annular groove smaller in size than the first annular groove, the second annular groove is connected through a lubricating oil flow channel opened on the bearing end cover, the bearing end cover is provided with an oil filling hole connected to the second annular groove, the sealing cover is provided with a circular hole concentric with the through hole, the sealing cover is arranged on the bearing end cover, the sealing cover blocks the first annular groove and the second annular groove on the bearing end cover, so that the first annular groove forms a cooling cavity for circulating cooling water, and the second annular groove forms a lubricating cavity for circulating lubricating oil. The utility model can not only provide lubrication for the high-speed shaft and ensure the lubrication effect of the high-speed shaft through the lubricating oil circulating in the second annular groove, but also take away part of the heat generated when the high-speed shaft is running, so as to play a role of local cooling; and then rely on the cooling water flowing in the first annular groove to use the cooling water to cool the reducer housing and the heat transferred by the lubricating oil again, so as to form a cascade cooling effect, thereby effectively cooling the inside of the high-speed shaft. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0011] Figure 1 It is a structural schematic diagram of the utility model.
[0012] Figure 2 For this utility model Figure 1 Schematic diagram of the cross-sectional structure of AA.
[0013] Figure 3 This is a schematic diagram of the structure of the utility model installed on a reducer.
[0014] Figure 4 For this utility model Figure 3 Schematic diagram of the K-direction structure.
[0015] In the figure: bearing end cover 01, sealing cover 02, through hole 03, first annular groove 04, water inlet 05, water outlet 06, second annular groove 07, lubricating oil flow channel 08, oil filling hole 09, circular hole 10, sealing groove 11, high-speed shaft 12, and housing 13. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0017] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner", "lower" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limitations on the present invention.
[0018] Please see Figure 1 , Figure 2 In one embodiment, the utility model provides a high-speed shaft end cover structure of a mining reducer, including a bearing end cover 01 and a sealing cover 02; the bearing end cover 01 is provided with a through hole 03 for installing the high-speed shaft 12, the bearing end cover 01 is provided with a first annular groove 04, and the bearing end cover 01 is provided with a water inlet 05 and a water outlet 06 connected to the first annular groove 04, and the water inlet 05 and the water outlet 06 are both externally connected to a cooling circulating water device. The bearing end cover 01 is provided with a second annular groove 07 whose size is smaller than the first annular groove 04. The second annular groove 07 is connected through a lubricating oil flow channel 08 opened on the bearing end cover 01. The bearing end cover 01 is provided with an oil filling hole 09 connected to the second annular groove 07. The sealing cover 02 is provided with a circular hole 10 concentric with the through hole 03. The sealing cover 02 is arranged on the bearing end cover 01. The sealing cover 02 blocks the first annular groove 04 and the second annular groove 07 on the bearing end cover 01, so that the first annular groove 04 forms a cooling cavity for circulating cooling water, and the second annular groove 07 forms a lubricating cavity for circulating lubricating oil. The lubricating oil circulating in the second annular groove 07 can not only provide lubrication for the high-speed shaft 12 to ensure the lubrication effect of the high-speed shaft 12, but also can take away part of the heat generated by the operation of the high-speed shaft 12 to achieve a local cooling effect; and then rely on the cooling water flowing in the first annular groove 04 to use the cooling water to cool the reducer housing 13 and the heat transferred by the lubricating oil again, so as to form a cascade cooling effect of the high-speed shaft 12, thereby effectively cooling the interior of the high-speed shaft 12.
[0019] The bearing end cover 01 is provided with a sealing groove 11 , and a sealing ring is arranged in the sealing groove 11 .
[0020] The sealing cover 02 is connected to the bearing end cover 01 by fastening screws.
[0021] Please see Figure 3, Figure 4 In one embodiment, the utility model provides a mining reducer, including a mining reducer high-speed shaft end cover structure, and the mining reducer high-speed shaft 12 end cover structure is installed on the mining reducer housing 13.
[0022] The high-speed shaft end cover structure of the mining reducer includes a bearing end cover 01 and a sealing cover 02; the bearing end cover 01 is provided with a through hole 03 for installing the high-speed shaft 12, the bearing end cover 01 is provided with a first annular groove 04, the bearing end cover 01 is provided with a water inlet 05 and a water outlet 06 connected to the first annular groove 04, and the water inlet 05 and the water outlet 06 are both externally connected to a cooling circulating water device. The bearing end cover 01 is provided with a second annular groove 07 smaller in size than the first annular groove 04, the second annular groove 07 is connected through a lubricating oil flow channel 08 opened on the bearing end cover 01, the bearing end cover 01 is provided with an oil injection hole 09 connected to the second annular groove 07, the sealing cover 02 is provided with a circular hole 10 concentric with the through hole 03, the sealing cover 02 is arranged on the bearing end cover 01, and the sealing cover 02 is connected to the bearing end cover 01 by fastening screws. The sealing cover 02 blocks the first annular groove 04 and the second annular groove 07 on the bearing end cover 01, so that the first annular groove 04 forms a cooling cavity for circulating cooling water, and the second annular groove 07 forms a lubrication cavity for circulating lubricating oil. The lubricating oil circulating in the second annular groove 07 can not only provide lubrication for the high-speed shaft 12 to ensure the lubrication effect of the high-speed shaft 12, but also take away part of the heat generated when the high-speed shaft 12 is running, so as to play a role in local cooling; then relying on the cooling water flowing in the first annular groove 04, the cooling water is used to cool down the reducer housing 13 and the heat transferred by the lubricating oil again, so as to form a step-by-step cooling effect of the high-speed shaft 12, thereby effectively cooling the interior of the high-speed shaft 12. The bearing end cover 01 is provided with a sealing groove 11, and a sealing ring is arranged in the sealing groove 11.
[0023] The above disclosure is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.
Claims
1. A high-speed shaft end cover structure for a mining reducer, characterized in that: It includes a bearing end cover and a sealing cover; the bearing end cover is provided with a through hole for installing a high-speed shaft, the bearing end cover is provided with a first annular groove, the bearing end cover is provided with a water inlet and a water outlet connected to the first annular groove, the bearing end cover is provided with a second annular groove smaller in size than the first annular groove, the second annular groove is connected through a lubricating oil flow channel opened on the bearing end cover, the bearing end cover is provided with an oil filling hole connected to the second annular groove, the sealing cover is provided with a circular hole concentric with the through hole, the sealing cover is arranged on the bearing end cover, the sealing cover blocks the first annular groove and the second annular groove on the bearing end cover, so that the first annular groove forms a cooling cavity for circulating cooling water, and the second annular groove forms a lubricating cavity for circulating lubricating oil.
2. The high-speed shaft end cover structure of a mining reducer according to claim 1 is characterized in that: The bearing end cover is provided with a sealing groove, and a sealing ring is arranged in the sealing groove.
3. The high-speed shaft end cover structure of a mining reducer according to claim 1 is characterized in that: The sealing cover is connected to the bearing end cover via fastening screws.
4. A mining reducer, characterized in that: It comprises the high-speed shaft end cover structure of a mining reducer as described in any one of claims 1 to 3, and the high-speed shaft end cover structure of a mining reducer is installed on a housing of the mining reducer.