Rapid grease filling tool for motor bearing

Abstract

The utility model relates to the technical field of motor manufacturing, and discloses a motor bearing grease rapid filling tool, which comprises a bottom plate with a grease cavity in the middle of the top and a cover plate which is arranged on the bottom plate and covers the grease cavity, the positioning round protrusion is used for being matched with an inner ring of the bearing to achieve positioning, the cover plate is provided with a plurality of grease outlet holes which are distributed around the periphery of the positioning round protrusion in an array mode and extend in the vertical direction, one end of each grease outlet hole is communicated with the grease cavity, and the other end of each grease outlet hole is communicated with a ball gap of the bearing. A grease inlet channel communicated with the grease cavity is formed in the outer side face of the bottom plate. According to the rapid grease filling tool for the motor bearing, through the reasonable grease cavity and grease outlet hole structure, grease can evenly flow into gaps of all the balls, the gaps among all the bearing balls are completely filled at a time, and the requirements for large-scale production and rapid maintenance are met.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing technology, and in particular to a tooling for quick grease filling of motor bearings. Background Technology

[0002] In the manufacturing and maintenance of permanent magnet motors, proper lubrication of the bearings plays a crucial role in the stable operation of the motor. Especially for permanent magnet motors equipped with large bearings, sufficient and even grease filling is key to ensuring smooth ball movement and reducing wear.

[0003] However, current methods for filling motor bearing grease have significant drawbacks. Currently, grease is typically applied one by one between each bearing ball using grease fittings. This method is particularly problematic when dealing with large bearings. Firstly, the process of individually filling each ball is extremely tedious, requiring significant time and effort from operators, resulting in very low production efficiency and failing to meet the demands of large-scale production and rapid maintenance. Secondly, because the grease filling process relies entirely on manual operation and lacks precise quantitative control, the amount of grease injected varies greatly between different balls. This prevents the gaps between bearing balls from being filled evenly and effectively, thus hindering the formation of an ideal lubrication environment. Prolonged exposure to this poor lubrication condition significantly shortens the bearing's lifespan, increasing the high costs associated with frequent bearing replacements and potentially causing production stoppages due to motor failures, resulting in substantial economic losses for the company. Therefore, developing a motor bearing grease filling fixture capable of completely filling all the gaps between bearing balls in one operation is an urgent need to solve current problems and improve production efficiency and motor operational reliability.

[0004] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a grease filling tool for motor bearings, which aims to fill all the gaps between the bearing balls in one go, thereby improving the filling efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A quick grease filling fixture for motor bearings includes a base plate with a grease cavity at the top center and a cover plate disposed on the base plate and covering the grease cavity. The top of the cover plate is provided with a positioning protrusion, which is used to cooperate with the inner ring of the bearing for positioning. The cover plate has a plurality of grease outlet holes arranged in a circumferential array around the positioning protrusion and extending vertically. One end of each grease outlet hole communicates with the grease cavity, and the other end communicates with the ball gap of the bearing. A grease inlet channel communicating with the grease cavity is provided on the outer side of the base plate.

[0008] As a further improvement to the above technical solution, the bottom plate and the cover plate are circular structures, and the grease cavity is a circular concave cavity structure.

[0009] As a further improvement to the above technical solution, the top surface of the base plate is provided with a plurality of threaded holes arranged in a circular array, and the cover plate is provided with mounting holes of the same number as the threaded holes and corresponding to each other. Each mounting hole is provided with a screw, which passes through the mounting hole and connects to the corresponding threaded hole.

[0010] As a further improvement to the above technical solution, a sealing gasket is provided between the base plate and the cover plate, and the sealing gasket has through holes of the same number as the screws for the screws to pass through.

[0011] As a further improvement to the above technical solution, the bottom plate forms an annular step on the side wall of the grease chamber, a sealing ring is provided on the step, and the bottom of the cover plate is provided with a convex surface that presses against the sealing ring.

[0012] As a further improvement to the above technical solution, the cover plate is provided with a positioning groove for the bearing to be embedded.

[0013] As a further improvement to the above technical solution, a connector is provided at the entrance of the grease inlet channel.

[0014] As a further improvement to the above technical solution, at least two recessed holes are provided on the top surface of the base plate.

[0015] The beneficial effects of this utility model are as follows: Unlike the existing technology that involves individually filling each bearing ball with grease, the grease-filling fixture for motor bearings provided by this utility model, through its rationally designed grease chamber and grease outlet structure, allows grease to flow evenly into each ball gap, ensuring that the gaps between the bearing balls are uniformly and effectively filled. This helps to create an ideal lubrication environment and significantly extends the service life of the bearing. It also fills all the gaps between the bearing balls at once, greatly reducing the tediousness of the grease-filling operation, saving operators time and effort, effectively improving production efficiency, and meeting the needs of large-scale production and rapid maintenance. Attached Figure Description

[0016] Figure 1 A perspective view of the grease quick-filling fixture provided by this utility model.

[0017] Figure 2 A 3D view of the bearing after the grease-filling quick-filling fixture has been installed.

[0018] Figure 3 A cross-sectional view after the bearing has been fitted with a quick-fill grease applicator.

[0019] Figure 4 An exploded view of the grease-filling tooling provided by this utility model.

[0020] Explanation of main component symbols: 1-base plate, 11-grease chamber, 12-threaded hole, 13-step, 14-sunken hole, 15-grease inlet channel, 2-cover plate, 21-positioning convex surface, 22-grease outlet hole, 23-mounting hole, 24-positioning groove, 25-convex surface, 3-bearing, 31-ball clearance, 4-screw, 5-seal gasket, 51-perforation, 6-seal ring. Detailed Implementation

[0021] This utility model provides a quick grease filling fixture for motor bearings. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes the utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit the scope of protection of this utility model.

[0022] Please see Figures 1 to 4 This utility model provides a quick grease filling fixture for motor bearings, including a base plate 1 with a grease cavity 11 at the top center and a cover plate 2 disposed on the base plate 1 and covering the grease cavity 11. The top of the cover plate 2 is provided with a positioning protrusion 21, which is used to cooperate with the inner ring of the bearing 3 for positioning. The cover plate 2 is provided with a plurality of grease outlet holes 22 arranged in a circumferential array around the positioning protrusion 21 and extending vertically. One end of the grease outlet hole 22 is connected to the grease cavity 11, and the other end is connected to the ball gap 31 of the bearing 3. A grease inlet channel 15 connected to the grease cavity 11 is provided on the outer side of the base plate 1.

[0023] When using this grease quick-filling fixture, firstly, the inner ring of the bearing 3 is fitted onto the positioning protrusion 21 on the top of the cover plate 2. Precise positioning is achieved through the cooperation between the positioning protrusion 21 and the inner ring of the bearing 3. Next, grease is injected into the grease chamber 11 through the grease inlet channel 15 via an external grease injection device, creating injection pressure. Since the grease chamber 11 is connected to the grease outlet holes 22, the grease injected into the grease chamber 11 flows through these grease outlet holes 22 to the ball gaps 31 of the bearing 3. That is, all grease outlet holes 22 are filled with grease simultaneously, thereby achieving one-time filling of grease into all the gaps between the balls of the bearing 3.

[0024] Unlike existing technologies that require individual grease filling between the bearing balls 3, the grease quick-filling fixture for motor bearing 3 provided by this utility model, through its rationally designed grease chamber 11 and grease outlet 22 structure, allows grease to flow evenly into the gaps between each ball, ensuring that the gaps between the bearing balls 3 are uniformly and effectively filled. This helps to create an ideal lubrication environment, significantly extending the service life of the bearing 3. By filling all the gaps between the bearing balls 3 at once, the grease filling operation is greatly reduced, saving operators' time and effort, effectively improving production efficiency, and meeting the needs of large-scale production and rapid maintenance.

[0025] It should be understood that, due to the large size and corresponding mass of bearing 3, bearing 3 will not move after being placed on cover plate 2 and during the subsequent grease injection process, thanks to its own gravity.

[0026] The base plate 1 and cover plate 2 adopt a circular structure, which has better compatibility with the circular bearing 3 in terms of shape. When the tooling is in contact with the bearing 3, the circular structure can provide a uniform support force from all directions, ensuring that the tooling always maintains a stable relative position with the bearing 3 during the grease injection process. This avoids tooling displacement or grease filling deviation caused by uneven force, thereby ensuring the stability and accuracy of the grease injection operation.

[0027] The grease chamber 11 is designed as a circular concave cavity, which facilitates the uniform distribution of grease within the cavity. When grease is injected into the grease chamber 11 through the grease inlet channel 15, the circular concave cavity provides relatively uniform resistance to grease flow, preventing localized accumulation or impaired flow. This allows grease to enter each grease outlet hole 22 more evenly, ensuring a more uniform amount of grease flowing out of the grease outlet holes 22 and filling the ball gaps of the bearing 3, further optimizing the lubrication effect of the bearing 3.

[0028] The top surface of the base plate 1 has multiple threaded holes 12 arranged in a circular array. The cover plate 2 has mounting holes 23, which are the same number as the threaded holes 12 and correspond one-to-one. Each mounting hole 23 is equipped with a screw 4, which passes through the mounting hole 23 and connects to the corresponding threaded hole 12, forming multiple evenly distributed fastening points. This circular array connection method makes the bonding force between the cover plate 2 and the base plate 1 uniform and stable. When subjected to the pressure generated during the oil filling process and possible external vibrations and impacts, the overall structure of the tooling is not prone to loosening or deformation, thus ensuring the stability and reliability of the grease filling process.

[0029] Furthermore, a sealing gasket 5 is provided between the base plate 1 and the cover plate 2. The sealing gasket 5 has the same number of through holes 51 as the screws 4, allowing the screws 4 to pass through. The sealing gasket 5 effectively fills any tiny gaps that may exist between the two, greatly enhancing the sealing performance of the tooling. Especially during the grease injection process, when the internal pressure of the grease chamber 11 increases, the sealing gasket 5 prevents grease from leaking from the connection between the base plate 1 and the cover plate 2, ensuring that all grease flows through the grease outlet 22 to the ball gap of the bearing 3, improving the utilization rate of grease, and at the same time avoiding grease leakage from polluting the working environment and damaging other parts of the equipment.

[0030] Furthermore, the base plate 1 forms an annular step 13 on the side wall of the grease chamber 11, and a sealing ring 6 is provided on the step 13. The bottom of the cover plate 2 is provided with a convex surface 25 that presses against the sealing ring 6. Based on the original sealing gasket 5, the annular step 13 and the convex surface 25 cooperate with each other, with the sealing ring 6 in the middle, forming another tight sealing barrier. When the tooling performs grease filling operations, the internal pressure of the grease chamber 11 increases, and the sealing ring 6, under the pressure of the convex surface 25, is tightly fitted onto the step 13, effectively preventing grease from leaking from the contact point between the side wall of the grease chamber 11 and the cover plate 2. This double sealing design greatly reduces the risk of grease leakage, further improves the efficiency and accuracy of grease filling, and also better protects the working environment and equipment.

[0031] Preferably, the cover plate 2 has a positioning groove 24 for the bearing 3 to be embedded in. The inner wall of the positioning groove 24 contacts the outer ring of the bearing 3 to form a positioning, which can provide more precise positioning for the bearing 3. During the grease filling operation, the bearing 3 can be accurately embedded in the positioning groove 24, ensuring that the relative position between the bearing 3 and the tooling is fixed and accurate. In addition, the positioning groove 24 can tightly hold the outer ring of the bearing 3, effectively preventing the bearing 3 from shifting or shaking due to uneven force during the oil filling process.

[0032] To facilitate connection with external oiling equipment, a connector is provided at the entrance of the grease inlet channel 15.

[0033] Preferably, the top surface of the base plate 1 has at least two recessed holes 14. The base plate 1 is fixed to the worktable by screws 4 engaging with the recessed holes 14, greatly enhancing the stability of the fixture during operation. During grease filling operations, it avoids misalignment between the grease outlet 22 and the bearing ball clearance caused by fixture shaking or displacement, ensuring precise and uniform grease injection, thereby improving the lubrication quality of the motor bearing 3 and ensuring stable motor operation.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A quick grease filling tool for motor bearings, characterized in that, The device includes a base plate with a grease chamber at the top center and a cover plate on the base plate that covers the grease chamber. The top of the cover plate has a positioning protrusion for engaging with the inner ring of the bearing for positioning. The cover plate has multiple grease outlet holes arranged in a circumferential array around the positioning protrusion and extending vertically. One end of each grease outlet hole communicates with the grease chamber, and the other end communicates with the ball gap of the bearing. The outer side of the base plate has a grease inlet channel that communicates with the grease chamber.

2. The quick grease filling fixture for motor bearings according to claim 1, characterized in that, The bottom plate and cover plate are circular structures, and the grease cavity is a circular concave cavity structure.

3. The quick grease filling fixture for motor bearings according to claim 2, characterized in that, The top surface of the base plate has a plurality of threaded holes arranged in a circular array, and the cover plate has mounting holes of the same number as the threaded holes and corresponding to each other. Each mounting hole is provided with a screw, which passes through the mounting hole and connects to the corresponding threaded hole.

4. The quick grease filling fixture for motor bearings according to claim 3, characterized in that, A sealing gasket is provided between the base plate and the cover plate, and the sealing gasket has the same number of holes as the screws for the screws to pass through.

5. The quick grease filling fixture for motor bearings according to claim 4, characterized in that, The bottom plate forms an annular step on the side wall of the grease chamber, and a sealing ring is provided on the step. The bottom of the cover plate is provided with a convex surface that presses down on the sealing ring.

6. The quick-filling grease tooling for motor bearings according to claim 1, characterized in that, The cover plate has a positioning groove for the bearing to be inserted.

7. The quick grease filling fixture for motor bearings according to claim 1, characterized in that, A connector is provided at the entrance of the grease inlet channel.

8. The quick grease filling fixture for motor bearings according to claim 1, characterized in that, The top surface of the base plate has at least two recessed holes.

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