End cover assembly structure

Abstract

The utility model provides an end cover assembly structure, which comprises an end cover main body and a bearing, the end cover main body is provided with a mounting groove for mounting the bearing, the mounting groove extends along the axial direction of the bearing, the axial groove bottom of the mounting groove is provided with a plurality of elastic pieces which are distributed in the circumferential direction, and the elastic pieces are arranged in the mounting groove. The end, away from the end cover body, of the elastic piece abuts against the bearing and is used for providing axial pre-tightening force for the bearing. According to the end cover assembly structure, the elastic piece is arranged to provide the axial pre-tightening force for the bearing, so that the axial positioning precision of the bearing is effectively improved, the abrasion of the bearing is reduced, the service life of equipment is prolonged, and the end cover assembly structure has remarkable practicability and economic benefits.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, and more specifically, to an end cap assembly structure. Background Technology

[0002] In modern mechanical systems, bearings, as key components supporting rotating shafts and reducing friction, are widely used in the transmission systems of various mechanical equipment. Mounting bearings on end caps is a common mechanical assembly method, widely applied in industrial production, transportation, aerospace, and other fields. However, during long-term operation, the contact area between the bearing and the end cap is continuously subjected to alternating loads, vibrations, and friction, making the bearing highly susceptible to wear.

[0003] Axial wear reduces the axial positioning accuracy of bearings, causing axial movement of shaft components. In motors and pumps, this can lead to changes in the clearance between the rotor and stator or between the impeller and pump casing, resulting in abnormal operation, reduced efficiency, and even serious malfunctions such as rotor rubbing. More seriously, the clearance caused by bearing wear affects the dynamic characteristics of the entire mechanical system, reducing operational reliability, increasing maintenance costs and downtime. Especially in applications requiring continuous operation, abnormal bearing wear can even trigger systemic failures, causing significant economic losses and safety hazards. Utility Model Content

[0004] The purpose of this application is to provide an end cap assembly structure that has the advantages of improving the axial positioning accuracy of the bearing, reducing wear, and extending the service life of the equipment.

[0005] This application provides an end cap assembly structure, including an end cap body and a bearing. The end cap body is provided with a mounting groove for mounting the bearing. The mounting groove extends along the axial direction of the bearing. A plurality of circumferentially distributed elastic elements are provided on the bottom of the axial groove of the mounting groove. The ends of the elastic elements away from the end cap body press against the bearing to provide axial preload to the bearing.

[0006] Compared with existing technologies, the end cap assembly structure proposed in this application has the following advantages: Multiple circumferentially distributed elastic elements are arranged at the bottom of the axial groove of the end cap body mounting slot. These elastic elements press against the bearing to provide axial preload. This effectively reduces the axial movement of the bearing during operation, because the axial preload can keep the bearing stable in the axial direction, avoiding the problem of accelerated wear caused by axial movement. Simultaneously, it improves the stability of the shaft system components, ensures the reliability of equipment operation, prevents changes in axial clearance within the equipment, and reduces the probability of abnormal equipment operation, reduced efficiency, and rubbing failures.

[0007] In one possible implementation, the mounting groove is provided with multiple positioning posts, and the elastic element is a helical spring, which is sleeved on the positioning posts. Compared with the prior art, the mounting groove is provided with multiple positioning posts, and the elastic element is a helical spring sleeved on the positioning posts. The positioning posts provide a stable mounting position for the helical spring, preventing the helical spring from shifting or wobbling during operation, ensuring that it can always accurately provide a stable axial preload to the bearing, and improving the reliability and stability of the elastic element's operation.

[0008] In one possible implementation, the plurality of positioning posts are evenly distributed circumferentially. Compared with the prior art, the even distribution of the plurality of positioning posts circumferentially results in a more uniform distribution of the axial preload of the helical spring on the bearing. This ensures that the preload on the bearing is consistent at all circumferential positions, avoiding localized wear caused by uneven preload, and further improving the bearing's service life and the stability of the shaft system.

[0009] In one possible implementation, a first sealing ring is provided between the end cap body and the bearing, the first sealing ring being used to seal the internal structure of the bearing. Compared with the prior art, this can effectively prevent external dust, impurities, etc. from entering the bearing, avoiding these foreign objects from causing wear and corrosion to the rolling elements, raceways, and other components inside the bearing, thereby extending the service life of the bearing and ensuring its normal operating performance.

[0010] In one possible implementation, a fixed base is also included, and the end cap body is fixedly connected to the fixed base by bolts. Compared with the prior art, the end cap body is fixedly connected to the fixed base by bolts, which makes installation and disassembly more convenient. When the equipment is maintained, repaired, or parts are replaced, the end cap body can be quickly removed from the fixed base, improving the efficiency of equipment maintenance and reducing maintenance costs.

[0011] In one possible implementation, an annular oil groove is formed between the outer peripheral wall of the mounting groove and the fixed base. The fixed base has an oil supply hole communicating with the annular oil groove. When oil is injected into the annular oil groove through the oil supply hole, the oil in the annular oil groove is used for radial vibration damping. Compared with the prior art, the annular oil groove formed between the outer peripheral wall of the mounting groove and the fixed base, and the oil supply hole on the fixed base communicating with the annular oil groove, allows oil to be injected into the annular oil groove for radial vibration damping. During bearing operation, when radial vibration occurs, the oil in the annular oil groove can buffer and absorb vibration energy, reducing the impact of vibration on the bearing, thereby reducing bearing wear and improving the smoothness and comfort of equipment operation.

[0012] In one possible implementation, a second sealing ring is provided on both axial sides of the annular oil groove, the second sealing ring being used to seal the annular oil groove. Compared with the prior art, this can prevent oil leakage from the oil groove, ensure that the oil is always kept within the annular oil groove to play a role in radial vibration damping, improve the utilization efficiency of the oil, and also avoid oil leakage causing pollution and damage to other components of the equipment. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the structure of this application;

[0014] Figure 2 for Figure 1 Enlarged view of point A;

[0015] Figure 3 This is a schematic diagram of the end cap body.

[0016] Explanation of reference numerals in the attached figures:

[0017] 1. End cap body; 11. Mounting groove; 12. Positioning post; 2. Bearing; 3. Fixing base; 31. Oil supply hole; 4. Elastic element; 5. First sealing ring; 6. Annular oil groove; 7. Second sealing ring. Detailed Implementation

[0018] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0019] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0020] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0021] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] See Figures 1 to 3 This application discloses an end cap assembly structure, including an end cap body 1 and a bearing 2. The end cap body 1 is provided with a mounting groove 11 for mounting the bearing 2. The mounting groove 11 extends along the axial direction of the bearing 2. A plurality of circumferentially distributed elastic elements 4 are provided on the bottom of the axial groove of the mounting groove 11. The ends of the elastic elements 4 away from the end cap body 1 press against the bearing 2 to provide axial preload force to the bearing 2.

[0023] As described above, the axial extension of the mounting groove 11 allows the bearing 2 to be stably mounted on the end cover body 1. Multiple circumferentially distributed elastic elements 4 are provided on the bottom of the axial groove of the mounting groove 11. These elastic elements 4 provide axial preload to the bearing 2 through their elastic deformation, effectively reducing axial wear caused by alternating loads and vibrations during operation. In other words, by setting up the mounting groove 11 and the elastic elements 4, the problem of decreased positioning accuracy of the bearing 2 due to axial wear during long-term operation is solved. The axial preload provided by the elastic elements 4 effectively reduces axial movement of the bearing 2, thereby preventing abnormal movement of shaft components and improving the operational stability and reliability of the equipment.

[0024] In this embodiment, the mounting groove 11 is provided with multiple positioning posts 12, and the elastic element 4 is a helical spring, which is sleeved on the positioning posts 12. The positioning posts 12 are used to fix the position of the helical spring, preventing it from shifting or falling off within the mounting groove 11, thereby ensuring that the helical spring can stably provide axial preload to the bearing 2. As an elastic element, the helical spring can absorb the axial vibration and impact generated by the bearing 2 during operation through its elastic deformation, while maintaining a continuous clamping force on the bearing 2, avoiding a decrease in the positioning accuracy of the bearing 2 due to axial clearance. Specifically, the number and distribution of the positioning posts 12 can be adjusted according to actual needs. For example, the positioning posts 12 can be evenly distributed around the circumference of the mounting groove 11 to ensure uniform force on the helical spring. The material and size of the helical spring can also be selected according to the load and operating conditions of the bearing 2. For example, a helical spring made of high-strength alloy steel can maintain stable elastic performance under high load conditions. In addition, the helical spring and the positioning posts 12 can be connected by an interference fit to further enhance their fixing effect.

[0025] In this embodiment, a first sealing ring 5 is provided between the end cap body 1 and the bearing 2. The first sealing ring 5 is used to seal the internal structure of the bearing 2. Specifically, the first sealing ring 5 can be made of materials such as rubber, silicone, or polytetrafluoroethylene, and its specific shape can be an O-ring sealing structure. That is, by setting the first sealing ring 5, external dust, moisture, or other impurities can be effectively prevented from entering the interior of the bearing 2, thereby extending the service life of the bearing 2 and improving the operational reliability of the equipment.

[0026] In this embodiment, the end cap assembly structure also includes a fixed base 3, and the end cap body 1 is fixedly connected to the fixed base 3 by bolts. The fixed base 3 provides stable support, ensuring that the end cap body 1 maintains a fixed position during operation and preventing displacement due to vibration or load changes. The bolt connection facilitates installation and disassembly while providing sufficient tightening force to ensure reliable connection between the end cap body 1 and the fixed base 3. The number and distribution of bolts can be optimized according to the size and stress conditions of the end cap assembly to ensure uniform stress distribution and avoid localized stress concentration.

[0027] In this embodiment, an annular oil groove 6 is formed between the outer peripheral wall of the mounting groove 11 and the fixed base 3. The fixed base 3 is provided with an oil supply hole 31 communicating with the annular oil groove 6. When oil is injected into the annular oil groove 6 through the oil supply hole 31, the oil in the annular oil groove 6 is used for radial vibration damping. The annular oil groove 6 can be formed by leaving a gap between the outer peripheral wall of the mounting groove 11 and the fixed base 3. The width and depth of the gap can be designed according to the actual vibration damping requirements. The location and number of the oil supply holes 31 can be optimized according to the size of the annular oil groove 6 and the oil flow characteristics to ensure that the oil can be evenly distributed and effectively damped. The oil can be selected according to the requirements of the working environment, such as high temperature, high pressure or corrosive environment, and a suitable lubricating oil or hydraulic oil can be selected. The oil injection can be realized by an automatic oil supply system, which can include a pressure sensor and a solenoid valve to adjust the oil injection volume in real time according to the oil pressure change to ensure that the oil in the annular oil groove 6 is always in the optimal working state. Specifically, by setting an annular oil groove 6 and an oil supply hole 31, this application can effectively absorb and mitigate radial vibration during the operation of the bearing 2 through the flow and pressure changes of the oil, thereby improving the operational stability and service life of the bearing 2. Among them, the design of the annular oil groove 6 allows the oil to form a uniform oil film between the bearing 2 and the fixed base 3, further enhancing the vibration reduction effect. In addition, the setting of the oil supply hole 31 allows the oil to be replenished and renewed in a timely manner, avoiding the decline in vibration reduction effect due to oil aging or contamination.

[0028] In this embodiment, a second sealing ring 7 is provided on both axial sides of the annular oil groove 6. The second sealing ring 7 is used to seal the annular oil groove 6. Specifically, the second sealing ring 7 can be made of elastic materials such as rubber, polyurethane, or silicone to ensure that it has good sealing performance and durability. The second sealing ring 7 can be installed on both axial sides of the annular oil groove 6 by interference fit to ensure that it is in close contact with the groove wall and forms an effective seal.

[0029] In this embodiment, the positioning post 12 and the end cap body 1 are integrally formed. This integral forming method can be achieved through processes such as casting and forging. For example, in the casting process, the positioning post 12 and the end cap body 1 can be formed simultaneously in the same mold, ensuring the connection strength and precision between the two. Specifically, the integral forming of the positioning post 12 and the end cap body 1 can effectively improve the integrity and stability of the structure, avoiding the loosening or misalignment problems that may occur in traditional assembly methods; since there are no seams or connecting parts between the positioning post 12 and the end cap body 1, it can better withstand the axial preload and vibration load of the bearing 2, reducing the risk of wear and deformation; in addition, integral forming can also simplify the manufacturing process, reduce production costs, and improve production efficiency.

[0030] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0031] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An end cap assembly structure comprising an end cap body and a bearing, characterized by, The end cover body is provided with a mounting groove for mounting the bearing, the mounting groove extends along the axial direction of the bearing, a plurality of elastic members distributed around the circumference are arranged on the axial groove bottom of the mounting groove, the end of the elastic member away from the end cover body is in abutment with the bearing, and the elastic member is used for providing the bearing with an axial pre-tightening force.

2. The end cap assembly structure of claim 1, wherein, A plurality of positioning columns are arranged in the mounting groove, the elastic member is a spiral spring, and the spiral spring is sleeved on the positioning column.

3. The end cap assembly structure of claim 2, wherein, The plurality of positioning columns are uniformly distributed around the circumference.

4. The end cap assembly structure of claim 1, wherein, A first sealing ring is arranged between the end cover body and the bearing, and the first sealing ring is used for sealing the internal structure of the bearing.

5. The end cap assembly structure of claim 1, wherein, A fixed base is further arranged, and the end cover body is fixedly connected to the fixed base by bolts.

6. The end cap assembly structure of claim 5, wherein, An annular oil groove is formed between the outer circumferential wall of the mounting groove and the fixed base, an oil supply hole is arranged on the fixed base and communicates with the annular oil groove, and when oil is injected into the annular oil groove through the oil supply hole, the oil in the annular oil groove is used for radial damping.

7. The end cap assembly structure of claim 6, wherein, Second sealing rings are arranged on both axial sides of the annular oil groove, and the second sealing rings are used for sealing the annular oil groove.

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