Bearing sealing structure of speed reducer
By adopting a triple seal structure and installation component design in the reducer bearing seal structure, the problems of poor sealing effect and cumbersome replacement process are solved, and more efficient sealing effect and convenient maintenance process are achieved.
Patent Information
- Application Number
- CN202520557428.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2035-03-27
AI Technical Summary
The sealing effect of the existing reducer bearing sealing structure is poor, and the sealing ring replacement process is cumbersome and time-consuming.
The triple seal structure is adopted, including a first seal assembly, a second seal assembly and a third seal assembly. The sealing rubber ring is achieved through the combination of arcuate blocks and springs, and the seal replacement process is simplified by the design of the installation assembly.
It improves the sealing effect of the reducer bearing seal structure, simplifies the seal replacement process, and improves maintenance convenience.
Smart Images
Figure CN222864066U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reducers, in particular to a reducer bearing sealing structure. Background Art
[0002] A reducer, also known as a speed reducer, is a mechanical device used to reduce the output speed of a motor or engine and increase the torque. It is usually composed of gears, bearings, housings, etc. It can reduce speed through different gear transmission methods to improve the operating efficiency and performance of the mechanical system. Reducers are widely used in the industrial field, especially in equipment that requires high power and low speed, such as conveyor belts, cranes, wind turbines, etc.
[0003] The design of the reducer bearing sealing structure is very important. It is directly related to the service life, operating efficiency and maintenance cost of the reducer. The reducer is generally used in mechanical equipment that needs to convert the rotation speed of the motor into a lower output speed. The bearing is responsible for supporting and reducing friction in the reducer, while the sealing structure is used to prevent lubricating oil leakage and external contaminants from entering, thereby ensuring the normal operation of bearings and gears.
[0004] In the process of realizing the present invention, the inventors found that the prior art had the following problems: 1. The existing common sealing structure only relies on a sealing rubber ring to achieve sealing. This single sealing method has limitations, resulting in a poor sealing effect; 2. The existing common sealing structure, after the sealing ring is worn out after long-term use, usually requires the entire sealing structure to be completely disassembled before the sealing ring can be removed and installed. This replacement process is both time-consuming and labor-intensive. Utility Model Content
[0005] The purpose of the utility model is to provide a reducer bearing sealing structure to solve the problems raised in the above background technology. To achieve the above purpose, the utility model provides the following technical solutions: a reducer bearing sealing structure, including a mounting assembly, a first sealing assembly is installed on the inner wall of the mounting assembly, a second sealing assembly is installed at the rear end of the first sealing assembly, and a third sealing assembly is installed at the rear end of the second sealing assembly.
[0006] The mounting assembly comprises a bearing mounting shell, an annular mounting plate is mounted on the outer wall of the bearing mounting shell, and a fixing ring is mounted on the front end of the bearing mounting shell.
[0007] The first sealing component comprises an annular mounting shell, a spring is mounted on the inner wall of the annular mounting shell, an arc block is mounted on one end of the spring, and a first sealing rubber ring is mounted on the inner wall of the arc block.
[0008] The second sealing assembly comprises a sealing ring, and a first mounting ring is mounted on the front end of the sealing ring.
[0009] The third sealing assembly comprises a second sealing rubber ring, and a second mounting ring is installed at the front end of the second sealing rubber ring.
[0010] Further preferably, a plurality of screw holes are provided at the front end of the annular mounting disk, and the plurality of screw holes are distributed in an annular shape with the horizontal center line of the annular mounting disk as the origin, and a sealing rubber ring is provided at the rear end of the annular mounting disk.
[0011] Further preferably, the internal dimension structure of the fixing ring is consistent with the external dimension structure of the annular mounting shell, and the outer walls of the fixing ring and the annular mounting shell are provided with a plurality of screw holes, and the plurality of screw holes are distributed in a ring shape with the horizontal center line of the fixing ring as the origin, and the fixing ring and the annular mounting shell are connected by screws.
[0012] Further preferably, three equidistantly distributed springs are installed on the outer wall of the arc block, and the springs and the arc block are set as a group, and there are several groups in total, and the several groups of springs and arc blocks are distributed in a ring shape with the horizontal center line of the annular mounting shell as the origin.
[0013] Further preferably, the rear end of the annular mounting shell is provided with an annular groove whose internal dimension structure is consistent with the external dimension structure of the first mounting ring, and the first mounting ring is inserted into the annular groove.
[0014] Further preferably, the inner wall radius of the sealing ring is 0.05 mm-0.2 mm larger than the inner wall radius of the second sealing rubber ring.
[0015] Further preferably, the rear end of the sealing ring is provided with an annular groove whose internal dimension structure is consistent with the external dimension structure of the second mounting ring, and the second mounting ring is inserted into the annular groove.
[0016] Compared with the prior art, the utility model has the following beneficial effects:
[0017] In the utility model, through the first sealing component, the second sealing component and the third sealing component, when the sealing structure is used, the second sealing rubber ring is fitted with the reducer transmission shaft, and the plurality of arc blocks are subjected to the elastic force of the spring, so that the first sealing rubber ring is tightly attached to the reducer transmission shaft, and the sealing ring plays a certain sealing role. Through the triple sealing structure, the sealing effect of the reducer bearing sealing structure is improved.
[0018] In the utility model, through the installation assembly and the first sealing assembly, when the seal needs to be replaced, the screws that install the fixing ring and the annular mounting shell are removed, and then the first sealing assembly, the second sealing assembly and the third sealing assembly are taken out from the fixing ring, and the first sealing assembly, the second sealing assembly and the third sealing assembly are separated from each other, and then a new seal is replaced, and the new seal and the previously unreplaced seal are installed on each other, and then the first sealing assembly, the second sealing assembly and the third sealing assembly are put into the fixing ring, and then the fixing ring and the annular mounting shell are installed with screws. When replacing the seal, it is only necessary to remove the seal separately for replacement, and the seal can be replaced quickly and conveniently, thereby improving the convenience of maintaining the sealing structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0020] Figure 2 This is a schematic diagram of the installation assembly structure of the utility model;
[0021] Figure 3 This is a schematic diagram of the full cross-section structure of the first sealing component of the utility model;
[0022] Figure 4 This is a schematic diagram of the structure of the second sealing component of the utility model;
[0023] Figure 5 This is a schematic diagram of the structure of the third sealing component of the utility model.
[0024] In the figure: 1, mounting assembly; 101, bearing mounting shell; 102, annular mounting plate; 103, fixing ring; 2, first sealing assembly; 201, annular mounting shell; 202, spring; 203, arc block; 204, first sealing rubber ring; 3, second sealing assembly; 301, sealing ring; 302, first mounting ring; 4, third sealing assembly; 401, second sealing rubber ring; 402, second mounting ring. DETAILED DESCRIPTION
[0025] 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 in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.
[0026] See also Figures 1 to 5The utility model provides a technical solution: a reducer bearing sealing structure, including a mounting assembly 1, a first sealing assembly 2 is installed on the inner wall of the mounting assembly 1, a second sealing assembly 3 is installed at the rear end of the first sealing assembly 2, and a third sealing assembly 4 is installed at the rear end of the second sealing assembly 3.
[0027] The mounting assembly 1 comprises a bearing mounting shell 101 , an annular mounting plate 102 is mounted on the outer wall of the bearing mounting shell 101 , and a fixing ring 103 is mounted on the front end of the bearing mounting shell 101 .
[0028] The first sealing assembly 2 comprises an annular mounting shell 201 , a spring 202 is mounted on the inner wall of the annular mounting shell 201 , an arc block 203 is mounted on one end of the spring 202 , and a first sealing rubber ring 204 is mounted on the inner wall of the arc block 203 .
[0029] The second sealing assembly 3 comprises a sealing ring 301 , and a first mounting ring 302 is mounted at the front end of the sealing ring 301 .
[0030] The third sealing assembly 4 comprises a second sealing rubber ring 401 , and a second mounting ring 402 is mounted on the front end of the second sealing rubber ring 401 .
[0031] In this embodiment, Figure 2 As shown, a plurality of screw holes are provided at the front end of the annular mounting disk 102, and the plurality of screw holes are distributed in a ring shape with the horizontal center line of the annular mounting disk 102 as the origin, and a sealing rubber ring is provided at the rear end of the annular mounting disk 102; the sealing structure and the reducer can be installed by using screws through the plurality of screw holes on the annular mounting disk 102, and the sealing rubber ring at the rear end of the annular mounting disk 102 can play a sealing role.
[0032] In this embodiment, Figure 2 and Figure 3 As shown, the internal dimension structure of the fixing ring 103 is consistent with the external dimension structure of the annular mounting shell 201, and the outer walls of the fixing ring 103 and the annular mounting shell 201 are provided with a plurality of screw holes, and the plurality of screw holes are distributed in a ring shape with the horizontal center line of the fixing ring 103 as the origin, and the fixing ring 103 and the annular mounting shell 201 are connected by screws; the fixing ring 103 and the annular mounting shell 201 can be installed by the screws, so that the first sealing component 2 and the fixing ring 103 can be installed, and the screws can be removed to remove the first sealing component 2 from the fixing ring 103, so as to facilitate the subsequent replacement of the first sealing component 2, the second sealing component 3 or the third sealing component 4.
[0033] In this embodiment, Figure 3As shown, three equidistantly distributed springs 202 are installed on the outer wall of the arc block 203, and the springs 202 and the arc block 203 are set as a group, and there are several groups in total. At the same time, the several groups of springs 202 and arc blocks 203 are distributed in a ring shape with the horizontal center line of the annular mounting shell 201 as the origin; the arc block 203 is subjected to the elastic force of the spring 202, so that the first sealing rubber ring 204 is close to the reducer transmission shaft, thereby improving the sealing effect.
[0034] In this embodiment, Figure 3 and Figure 4 As shown, the rear end of the annular mounting shell 201 is provided with an annular groove whose internal dimension structure is consistent with the external dimension structure of the first mounting ring 302, and the first mounting ring 302 is inserted into the annular groove; the first mounting ring 302 is inserted into the annular groove on the annular mounting shell 201, and the second sealing component 3 can be quickly installed with the first sealing component 2, which is convenient for the subsequent removal of the second sealing component 3 from the first sealing component 2 and replacement of the second sealing component 3.
[0035] In this embodiment, Figure 4 and Figure 5 As shown, the inner wall radius of the sealing ring 301 is 0.05mm-0.2mm larger than the inner wall radius of the second sealing rubber ring 401; there is a small gap between the sealing ring 301 and the reducer transmission shaft, which will form a certain throttling resistance. In order for the lubricating oil to pass through this gap, it is necessary to overcome the surface tension and the resistance of the gap, thereby playing a certain sealing role.
[0036] In this embodiment, Figure 4 and Figure 5 As shown, the rear end of the sealing ring 301 is provided with an annular groove whose internal dimension structure is consistent with the external dimension structure of the second mounting ring 402, and the second mounting ring 402 is inserted into the annular groove; the second mounting ring 402 is inserted into the annular groove on the sealing ring 301, and the third sealing component 4 can be quickly installed with the second sealing component 3, which is convenient for the subsequent removal of the third sealing component 4 from the second sealing component 3 and the replacement of the third sealing component 4.
[0037] The use method and advantages of the utility model: When the reducer bearing sealing structure is used, the working process is as follows:
[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, first install the seal in the bearing mounting shell 101, install the annular mounting disk 102 and the reducer with screws, the second sealing rubber ring 401 fits with the reducer transmission shaft, and several groups of arc blocks 203 are subjected to the elastic force of the spring 202, so that the first sealing rubber ring 204 is close to the reducer transmission shaft, and the sealing ring 301 plays a certain sealing role. When the seal needs to be replaced, the screws installing the fixing ring 103 and the annular mounting shell 201 are removed, and then the first sealing component 2, the second sealing component 3 and the third sealing component 4 are taken out from the fixing ring 103, and then the seal that needs to be replaced is replaced, and then the first sealing component 2, the second sealing component 3 and the third sealing component 4 are placed in the fixing ring 103, and then the fixing ring 103 and the annular mounting shell 201 are installed with screws.
[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. A reducer bearing sealing structure, comprising a mounting assembly (1), characterized in that: A first sealing component (2) is installed on the inner wall of the installation component (1), a second sealing component (3) is installed at the rear end of the first sealing component (2), and a third sealing component (4) is installed at the rear end of the second sealing component (3); The mounting assembly (1) comprises a bearing mounting shell (101), an annular mounting plate (102) is mounted on the outer wall of the bearing mounting shell (101), and a fixing ring (103) is mounted on the front end of the bearing mounting shell (101); The first sealing component (2) comprises an annular mounting shell (201), a spring (202) is mounted on the inner wall of the annular mounting shell (201), an arc block (203) is mounted on one end of the spring (202), and a first sealing rubber ring (204) is mounted on the inner wall of the arc block (203); The second sealing assembly (3) comprises a sealing ring (301), and a first mounting ring (302) is mounted on the front end of the sealing ring (301); The third sealing assembly (4) comprises a second sealing rubber ring (401), and a second mounting ring (402) is mounted on the front end of the second sealing rubber ring (401).
2. A reducer bearing sealing structure according to claim 1, characterized in that: The front end of the annular mounting plate (102) is provided with a plurality of screw holes, and the plurality of screw holes are distributed in an annular shape with the horizontal center line of the annular mounting plate (102) as the origin, and a sealing rubber ring is provided at the rear end of the annular mounting plate (102).
3. A reducer bearing sealing structure according to claim 1, characterized in that: The internal dimension structure of the fixing ring (103) is consistent with the external dimension structure of the annular mounting shell (201), and the outer walls of the fixing ring (103) and the annular mounting shell (201) are both provided with a plurality of screw holes, and the plurality of screw holes are distributed in an annular shape with the horizontal center line of the fixing ring (103) as the origin, and the fixing ring (103) and the annular mounting shell (201) are connected by screws.
4. A reducer bearing sealing structure according to claim 1, characterized in that: The outer wall of the arc block (203) is installed with three springs (202) distributed at equal distances, and the springs (202) and the arc block (203) are arranged as a group, and a total of several groups are provided, and the several groups of springs (202) and arc blocks (203) are distributed in a ring shape with the horizontal center line of the annular mounting shell (201) as the origin.
5. The reducer bearing sealing structure according to claim 1, characterized in that: The rear end of the annular mounting shell (201) is provided with an annular groove whose internal dimension structure is consistent with the external dimension structure of the first mounting ring (302), and the first mounting ring (302) is inserted into the annular groove.
6. A reducer bearing sealing structure according to claim 1, characterized in that: The inner wall radius of the sealing ring (301) is 0.05 mm to 0.2 mm greater than the inner wall radius of the second sealing rubber ring (401).
7. A reducer bearing sealing structure according to claim 1, characterized in that: The rear end of the sealing ring (301) is provided with an annular groove whose internal dimension structure is consistent with the external dimension structure of the second mounting ring (402), and the second mounting ring (402) is inserted into the annular groove.