Grease injection anti-overflow device for bearing
The grease overflow prevention device, designed with hydraulic control and a guide scraper, solves the problem of grease overflow during bearing grease injection, achieving precise grease injection and effective utilization of grease, reducing waste and pollution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU SBEJIA NEEDLE ROLLING BEARING CO LTD
- Filing Date
- 2025-09-25
- Publication Date
- 2026-06-19
AI Technical Summary
Existing bearing grease injection devices are prone to grease overflow if not operated properly, resulting in waste, environmental pollution, and affecting the normal operation of mechanical parts.
A grease injection anti-overflow device was designed, comprising a hydraulic cylinder, a sliding bracket, a rotating bracket, and a grease injection assembly. The device achieves precise clamping and grease injection of the bearing by hydraulically controlling the movement of the sliding bracket and the grease injector. Excess grease is collected by a guide scraper and a trough to prevent overflow.
It achieves precise positioning and clamping for bearing grease injection, prevents grease leakage, reduces grease waste, and collects excess grease for reuse, avoiding contamination.
Smart Images
Figure CN224381203U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bearing technology, and in particular to a grease injection anti-overflow device for bearings. Background Technology
[0002] Bearings support rotating mechanical parts, reducing the coefficient of friction during their movement and ensuring rotational accuracy. Grease injection is the process of adding lubricating grease into the bearing. The grease forms a protective film between the rolling elements and raceways, reducing direct metal-to-metal friction and wear. It also provides sealing, rust prevention, and heat dissipation, extending the bearing's lifespan. However, improper operation during grease injection can easily cause grease to overflow from the bearing's gaps. This not only wastes grease and increases production costs, but the overflowing grease can also pollute the environment and even affect the normal operation of other mechanical components. For example, it can accumulate dust and form sludge, accelerating component wear.
[0003] Commonly used grease injection anti-overflow devices for bearings typically consist of components such as grease nozzles, anti-overflow sleeves, sealing rings, and control valves. During use, due to the partial clamping anti-overflow mechanism, gaps can easily appear, leading to overflow and waste. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a grease overflow prevention device for bearings, which aims to improve the problem that gaps easily appear due to partial clamping for overflow prevention, leading to overflow and waste.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a grease injection anti-overflow device for bearings, comprising a fixed bracket, a hydraulic cylinder fixedly connected to the upper surface of the fixed bracket, a sliding bracket fixedly disposed at the output end of the hydraulic cylinder, a rotating bracket rotatably connected inside the sliding bracket, a rotating bracket 2 rotatably connected to the inner wall of the rotating bracket, a fixed bracket 2 rotatably connected to the outer wall of the rotating bracket 2, a sliding bracket 2 fixedly connected to the upper surface of the fixed bracket 2, a sliding bracket 3 slidably connected to the lower surface of the sliding bracket 2, a bearing 1 disposed on the upper surface of the sliding bracket 3, the outer wall of the sliding bracket 2 disposed on the outer wall of the bearing 1, a fixed plate fixedly connected to the inner wall of the fixed bracket, and a grease injection assembly disposed on the upper surface of the outer wall of the fixed plate, the grease injection assembly being used for grease injection into the bearing 1.
[0006] The above technical solution works as follows: When bearing 1 needs grease injection, bearing 1 is placed in the machine. First, hydraulic cylinder 1 is activated to drive sliding bracket 1, which in turn drives rotating bracket 1. This causes sliding bracket 1 to move the gear ring up and down, which in turn drives rotating bracket 2 to move up and down. The up and down movement of rotating bracket 2 drives fixed bracket 2 to move up and down, which in turn drives sliding bracket 2 to move. As sliding bracket 2 moves inward, it fits against bearing 1 and clamps and fixes bearing 1. Then, hydraulic cylinder 2 is activated to drive the grease injector downward. This causes the grease canister to output grease into the grease injector, which then moves downward to inject grease into bearing 1. After grease injection is completed, hydraulic cylinder 2 moves upward, which in turn drives the grease injector upward. The grease canister stops outputting grease, and then bearing 1 is removed. This not only achieves the effect of precise positioning and clamping of bearing 1 during grease injection, but also prevents leakage and reduces grease waste during grease injection.
[0007] Preferably, the grease injection assembly includes a grease injection can, the lower surface of which is disposed on the upper surface of the fixing plate, and a grease injection tube is disposed on the outer wall of the grease injection can.
[0008] Preferably, a fixed column is fixedly connected to the lower surface of the sliding bracket three, an overflow tank is slidably connected to the outer wall of the sliding bracket two, a fixed ring is fixedly connected to the lower surface of the overflow tank, a fixed bracket three is rotatably connected to the outer wall of the overflow tank, the outer wall of the fixed bracket three is fixedly connected to the outer wall of the fixed bracket one, a hydraulic cylinder two is fixedly connected to the upper surface of the fixed bracket one, and a grease injector is fixedly installed at the output end of the hydraulic cylinder two.
[0009] Preferably, the inner wall of the sliding bracket is slidably connected to the outer wall of the fixed bracket, and the outer wall of the rotating bracket is fixedly connected to the inside of the gear ring.
[0010] Preferably, a motor is fixedly connected to the inner wall of the sliding bracket, a rotating column is fixedly provided at the output end of the motor, a gear is fixedly connected to the outer wall of the rotating column, and a gear ring is meshed with the outer wall of the gear.
[0011] Preferably, a flow guide scraper is fixedly connected to the outer wall of the grease injector, a groove is provided on the outer wall between the fixed column and the fixed ring, a grease box is fixedly connected to the lower surface of the fixed ring, a flow tube is provided inside the grease box, and a grease injection cylinder is provided on the outer wall of the flow tube.
[0012] Preferably, the lower surface of the grease injection cylinder is fixedly connected to the upper surface of the sliding bracket, and the outer wall of the guide scraper is in contact with the inner wall of the anti-overflow tank.
[0013] Preferably, the outlet of the grease injection tube is located inside the grease injector.
[0014] This utility model has the following beneficial effects:
[0015] 1. In this utility model, the sliding bracket 2 is attached to the bearing 1 and clamped and fixed. The hydraulic cylinder 2 is started to drive the grease injector to move, and then the grease injection tank outputs grease to the grease injection pipe, thereby inputting grease into the grease injector, thereby injecting grease into the bearing 1. After the bearing 1 is greased, not only is the effect of precise positioning and clamping of the bearing 1 achieved, but also the effect of preventing overflow and reducing grease waste during the grease injection process is achieved.
[0016] 2. In this utility model, when the sliding bracket moves outward and is flush with the overflow tank, the hydraulic cylinder is activated to drive the grease injector downward, which in turn drives the guide scraper to move. The guide scraper then guides and scrapes away excess grease on the inner wall of the overflow tank. The excess grease flows into the drain trough and finally into the grease tank. Thus, the excess grease flows into the grease injection cylinder through the flow pipe, achieving the effect of preventing overflow and dripping of excess grease, scraping it off, and collecting it for reuse. Attached Figure Description
[0017] Figure 1 This is a perspective view of a grease injection anti-overflow device for bearings proposed in this utility model;
[0018] Figure 2 This is a partial structural diagram of a hydraulic cylinder for a bearing grease injection anti-overflow device proposed in this utility model;
[0019] Figure 3 This is a cross-sectional view of the internal structure of a fixing bracket for a grease injection anti-overflow device for bearings proposed in this utility model.
[0020] Figure 4 This is a cross-sectional schematic diagram of the internal structure of the fixing column frame of a grease injection anti-overflow device for bearings proposed in this utility model.
[0021] Legend:
[0022] 1. Fixed bracket one; 2. Hydraulic cylinder one; 3. Sliding bracket one; 4. Rotating bracket one; 5. Gear ring; 6. Rotating bracket two; 7. Fixed bracket two; 8. Sliding bracket two; 9. Sliding bracket three; 10. Bearing one; 11. Fixed column frame; 12. Fixed ring; 13. Anti-overflow tank; 14. Fixed bracket three; 15. Grease injector; 16. Hydraulic cylinder two; 17. Fixed plate; 18. Grease injection tank; 19. Grease injection pipe; 20. Motor; 21. Rotating column; 22. Gear; 23. Guide scraper; 24. Leakage groove; 25. Grease tank; 26. Flow pipe; 27. Grease injection cylinder. Detailed Implementation
[0023] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0024] Reference Figure 1 , Figure 2 and Figure 3 An embodiment of this utility model provides a grease injection anti-overflow device for bearings, comprising a fixed bracket 1, a hydraulic cylinder 2 fixedly connected to the upper surface of the fixed bracket 1, a sliding bracket 3 fixedly provided at the output end of the hydraulic cylinder 2, a rotating bracket 4 rotatably connected inside the sliding bracket 3, a rotating bracket 6 rotatably connected to the inner wall of the rotating bracket 4, a fixed bracket 7 rotatably connected to the outer wall of the rotating bracket 6, a sliding bracket 8 fixedly connected to the upper surface of the fixed bracket 7, a sliding bracket 9 slidably connected to the lower surface of the sliding bracket 8, a bearing 10 provided on the upper surface of the sliding bracket 9, the outer wall of the sliding bracket 8 being provided on the outer wall of the bearing 10, a fixed plate 17 fixedly connected to the inner wall of the fixed bracket 1, and a grease injection assembly provided on the upper surface of the outer wall of the fixed plate 17 for injecting grease into the bearing 10.
[0025] Specifically, when bearing 10 needs grease injection, bearing 10 is inserted, and hydraulic cylinder 2 is first activated to drive sliding bracket 3, which in turn drives rotating bracket 4. Fixed bracket 1 supports and restricts hydraulic cylinder 2 to ensure that the position of hydraulic cylinder 2 does not change. Fixed bracket 1 guides and restricts sliding bracket 3, so that hydraulic cylinder 2 can only slide on the outer wall of fixed bracket 1. Furthermore, when hydraulic cylinder 12 moves up and down, it drives sliding bracket 13 to slide up and down on the outer wall of fixed bracket 11. Sliding bracket 13 supports and restricts gear ring 5, causing sliding bracket 13 to drive gear ring 5 to move up and down, thereby driving rotating bracket 26 to move up and down. The up and down movement of rotating bracket 26 drives fixed bracket 27 to move up and down, which in turn drives sliding bracket 28 to move. Rotating bracket 14 supports and restricts rotating bracket 26 to ensure that rotating bracket 26 will not fall when it moves. Rotating bracket 26 supports and restricts fixed bracket 27, causing rotating bracket 26 to move up and down, thereby driving fixed bracket 27 to move up and down, which in turn drives sliding bracket 28 to move back and forth. Sliding bracket 39 guides and supports sliding bracket 28, so that sliding bracket 28 can only slide inside sliding bracket 39. By moving sliding bracket 28 inward, it fits against bearing 10 and clamps and fixes bearing 10.
[0026] Reference Figure 1 The grease injection assembly includes a grease injection tank 18, the lower surface of which is disposed on the upper surface of the fixing plate 17, and a grease injection tube 19 is disposed on the outer wall of the grease injection tank 18.
[0027] Specifically, the fixing plate 17 supports and restricts the grease injection tank 18 so that the position of the grease injection tank 18 does not change, and the grease injection pipe 19 guides the grease injection tank 18 so that the grease does not spill when the grease is injected.
[0028] Reference Figure 1 , Figure 2 and Figure 3 A fixed column 11 is fixedly connected to the lower surface of the sliding bracket 3 9. An overflow tank 13 is slidably connected to the outer wall of the sliding bracket 2 8. A fixed ring 12 is fixedly connected to the lower surface of the overflow tank 13. A fixed bracket 3 14 is rotatably connected to the outer wall of the overflow tank 13. The outer wall of the fixed bracket 3 14 is fixedly connected to the outer wall of the fixed bracket 1 1. A hydraulic cylinder 2 16 is fixedly connected to the upper surface of the fixed bracket 1 1. A grease injector 15 is fixedly installed at the output end of the hydraulic cylinder 2 16.
[0029] Specifically, the hydraulic cylinder 16 is activated, causing the grease injector 15 to move downwards. This causes the grease tank 18 to output grease into the grease injection pipe 19, which then enters the grease injector 15. The fixing plate 17 guides and restricts the hydraulic cylinder 16, ensuring that the grease injector 15 does not tilt as it moves downwards. The fixing plate 17 also supports and restricts the grease tank 18, preventing its position from changing. This allows the grease injector 15 to move downwards and inject grease into the bearing 10. After the bearing 10 is greased, the hydraulic cylinder 16 moves upwards, causing the grease injector 15 to move upwards as well. The grease tank 18 stops outputting grease, and the bearing 10 is then removed. This process not only achieves precise positioning and clamping of the bearing 10 during grease injection but also prevents leakage and reduces grease waste.
[0030] Reference Figure 1 and Figure 3 The inner wall of the sliding bracket 3 is slidably connected to the outer wall of the fixed bracket 1, and the outer wall of the rotating bracket 4 is fixedly connected to the inside of the gear ring 5.
[0031] Specifically, the fixed bracket 1 restricts and guides the sliding bracket 3, preventing it from falling off when moving up and down. The gear ring 5 restricts the rotating bracket 4, so that when the gear ring 5 is driven to rotate by the gear 22, it simultaneously drives the rotating bracket 4 to rotate.
[0032] Reference Figure 1 , Figure 2 and Figure 3A motor 20 is fixedly connected to the inner wall of the sliding bracket 3. A rotating column 21 is fixedly installed at the output end of the motor 20. A gear 22 is fixedly connected to the outer wall of the rotating column 21. A gear ring 5 is meshed with the outer wall of the gear 22.
[0033] Specifically, the motor 20 drives the rotating column 21 to rotate, which in turn drives the gear 22 to rotate. The sliding bracket 3 supports and restricts the motor 20 to ensure that the position of the motor 20 does not change. The sliding bracket 3 also restricts the rotating column 21 so that the rotating column 21 will not tilt when driven by the motor 20. The rotating column 21 supports and restricts the gear 22 so that the rotating column 21 drives the gear 22 to rotate synchronously, thereby causing the gear 22 to rotate and drive the gear ring 5 to rotate.
[0034] Reference Figure 1 and Figure 3 The outer wall of the grease injector 15 is fixedly connected to a flow guide scraper 23, and a groove 24 is provided on the outer wall between the fixed column 11 and the fixed ring 12. A grease box 25 is fixedly connected to the lower surface of the fixed ring 12, and a flow tube 26 is provided inside the grease box 25. A grease injection cylinder 27 is provided on the outer wall of the flow tube 26.
[0035] Specifically, the rotation of the gear ring 5 drives the anti-overflow tank 13 to rotate, thus supporting and restricting the rotation bracket 1 4. This ensures that the gear ring 5 rotates synchronously with the gear 22. The fixed bracket 3 14 restricts the anti-overflow tank 13, preventing it from tilting during rotation. When the sliding bracket 3 9 moves outward and aligns with the anti-overflow tank 13, the hydraulic cylinder 2 16 is activated, causing the grease injector 15 to move downward, which in turn moves the guide scraper 23 downward. The hydraulic cylinder 2 16 restricts and supports the grease injector 15, ensuring its synchronous up-and-down movement. The grease injector 15 also supports and restricts the guide scraper 23, preventing it from falling during its up-and-down movement, thus allowing the guide scraper 23 to move downward. When moving, excess grease is scraped off by guiding the flow through the inner wall of the rotating anti-overflow tank 13. The excess grease flows downward into the drain trough 24 and finally into the grease tank 25. The drain trough 24 guides the excess grease, and the fixing ring 12 supports and restricts the grease tank 25, ensuring that the position of the grease tank 25 does not change. This allows the excess grease in the grease tank 25 to flow into the flow pipe 26, and then into the grease injection cylinder 27. The sliding bracket 3 supports and restricts the grease injection cylinder 27, ensuring that its position does not change. Finally, the excess grease is collected and used or cleaned, completing the scraping of excess grease and achieving the effects of preventing overflow and dripping of excess grease, scraping, and collecting it for use.
[0036] Reference Figure 1 and Figure 3The lower surface of the grease injection cylinder 27 is fixedly connected to the upper surface of the sliding bracket 3, and the outer wall of the guide scraper 23 is in contact with the inner wall of the anti-overflow tank 13.
[0037] Specifically, the grease injection cylinder 27 is supported and restricted by the sliding bracket 3 to ensure that the position of the grease injection cylinder 27 does not change and does not fall off the upper surface of the sliding bracket 3. The flow guide scraper 23 is attached to the anti-overflow tank 13 so that the flow guide scraper 23 can guide and scrape the grease to prevent overflow in the anti-overflow tank 13.
[0038] Reference Figure 1 The outlet of the grease injection tube 19 is located inside the grease injector 15;
[0039] Specifically, the grease injection tube 19 guides the grease injector 15, allowing grease to be injected into the interior of the grease injector 15.
[0040] Working principle: When bearing 10 needs grease injection, bearing 10 is placed in the machine. First, hydraulic cylinder 2 is activated to drive sliding bracket 3, which in turn drives rotating bracket 4. This causes sliding bracket 3 to move gear ring 5 up and down, which in turn moves rotating bracket 6 up and down. The up and down movement of rotating bracket 6 drives fixed bracket 7 up and down, which in turn moves sliding bracket 8. Sliding bracket 8 moves inward to fit against bearing 10 and clamp and fix it. Then, hydraulic cylinder 16 is activated to drive grease injector 15 downward. Grease canister 18 outputs grease into grease injector 15 through grease injection pipe 19, which is then input into grease injector 15. This causes grease injector 15 to move downward to inject grease into bearing 10. After grease injection is completed, hydraulic cylinder 16 moves upward, which in turn drives grease injector 15 upward. Grease canister 18 stops outputting grease, and then bearing 10 is removed. This process not only achieves precise positioning and clamping of bearing 10 for grease injection, but also prevents leakage and reduces grease waste during grease injection.
[0041] When excess grease is present and overflow is prevented, the motor 20 is started to drive the rotating column 21 to rotate, which in turn drives the gear 22 to rotate, thereby driving the gear ring 5 to rotate. The rotation of the gear ring 5 drives the overflow tank 13 to rotate. When the sliding bracket 3 9 moves outward and is flush with the overflow tank 13, the hydraulic cylinder 2 16 is started to drive the grease injector 15 to move downward, which in turn drives the guide scraper 23 to move downward. As the guide scraper 23 moves downward, it guides and scrapes away excess grease on the inner wall of the rotating overflow tank 13. The excess grease flows downward into the drain trough 24 and finally into the grease tank 25. The excess grease in the grease tank 25 then flows into the flow pipe 26 and into the grease injection cylinder 27. Finally, the excess grease is collected and used or cleaned up, thus completing the scraping of excess grease and achieving the effect of preventing overflow and dripping of excess grease, scraping, and collecting it.
[0042] When using this device to grease bearing 10, it not only achieves the effect of precise positioning and clamping of bearing 10 during grease injection, and the effect of preventing overflow and reducing grease waste, but also achieves the effect of scraping off and collecting excess grease to prevent it from dripping.
[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A grease overflow prevention device for bearings, comprising a fixed bracket (1), characterized in that: A hydraulic cylinder (2) is fixedly connected to the upper surface of the fixed bracket (1). A sliding bracket (3) is fixedly installed at the output end of the hydraulic cylinder (2). A rotating bracket (4) is rotatably connected inside the sliding bracket (3). A rotating bracket (6) is rotatably connected to the inner wall of the rotating bracket (4). A fixed bracket (7) is rotatably connected to the outer wall of the rotating bracket (6). A sliding bracket (8) is fixedly connected to the upper surface of the fixed bracket (7). A sliding bracket (9) is slidably connected to the lower surface of the sliding bracket (8). A bearing (10) is installed on the upper surface of the sliding bracket (9). The outer wall of the sliding bracket (8) is installed on the outer wall of the bearing (10). A fixed plate (17) is fixedly connected to the inner wall of the fixed bracket (1). A grease injection assembly is installed on the upper surface of the outer wall of the fixed plate (17). The grease injection assembly is used to inject grease into the bearing (10).
2. The bearing grease overflow prevention device according to claim 1, characterized in that: The grease injection assembly includes a grease injection can (18), the lower surface of which is disposed on the upper surface of the fixing plate (17), and a grease injection tube (19) is disposed on the outer wall of the grease injection can (18).
3. The bearing grease overflow prevention device according to claim 1, characterized in that: A fixed column (11) is fixedly connected to the lower surface of the sliding bracket three (9). An overflow tank (13) is slidably connected to the outer wall of the sliding bracket two (8). A fixed ring (12) is fixedly connected to the lower surface of the overflow tank (13). A fixed bracket three (14) is rotatably connected to the outer wall of the overflow tank (13). The outer wall of the fixed bracket three (14) is fixedly connected to the outer wall of the fixed bracket one (1). A hydraulic cylinder two (16) is fixedly connected to the upper surface of the fixed bracket one (1). A grease injector (15) is fixedly installed at the output end of the hydraulic cylinder two (16).
4. A grease overflow prevention device for bearings according to claim 1, characterized in that: The inner wall of the sliding bracket (3) is slidably connected to the outer wall of the fixed bracket (1), and the outer wall of the rotating bracket (4) is fixedly connected to the inside of the gear ring (5).
5. A grease overflow prevention device for bearings according to claim 3, characterized in that: A motor (20) is fixedly connected to the inner wall of the sliding bracket (3). A rotating column (21) is fixedly installed at the output end of the motor (20). A gear (22) is fixedly connected to the outer wall of the rotating column (21). A gear ring (5) is meshed with the outer wall of the gear (22).
6. A grease overflow prevention device for bearings according to claim 3, characterized in that: The outer wall of the grease injector (15) is fixedly connected to a flow guide scraper (23), and a groove (24) is provided on the outer wall between the fixed column (11) and the fixed ring (12). A grease box (25) is fixedly connected to the lower surface of the fixed ring (12), and a flow tube (26) is provided inside the grease box (25). A grease injection cylinder (27) is provided on the outer wall of the flow tube (26).
7. A grease overflow prevention device for bearings according to claim 6, characterized in that: The lower surface of the grease injection cylinder (27) is fixedly connected to the upper surface of the sliding bracket (3), and the outer wall of the guide scraper (23) is in contact with the inner wall of the anti-overflow tank (13).
8. A grease overflow prevention device for bearings according to claim 2, characterized in that: The outlet of the grease injection tube (19) is located inside the grease injector (15).