Uniform grease injection structure for hub bearing

Abstract

The utility model relates to the technical field of hub bearings, and discloses a hub bearing grease uniform injection structure which comprises a workbench, the top of the outer wall of the workbench is fixedly connected with a rack, the top of the inner wall of the rack is slidably connected with hydraulic rods, and the top ends of the two hydraulic rods are fixedly connected with moving plates. An oil conveying pipe is fixedly connected to the bottom of the outer wall of the moving plate, an oil injection ring is fixedly connected to the bottom of the outer wall of the oil conveying pipe, a needle head is fixedly connected to the bottom of the outer wall of the oil injection ring, and rails are formed in the left side and the right side of the inner wall of the hydraulic rod; a protective shell is fixedly connected into the first supporting block. The oil injection ring on the oil conveying pipe is aligned with the bearing, at the moment, the motor in the protection shell is started, the motor drives the rotating shaft to rotate, so that the base is driven to rotate, then the bearing is rotated, then the oil is injected, and uniform injection can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of wheel hub bearing technology, and in particular to a structure for uniformly injecting grease into wheel hub bearings. Background Technology

[0002] Wheel hub bearings are one of the key components of automobiles and other vehicles. Their main functions are to bear the weight of the vehicle and provide precise guidance for the rotation of the wheel hub. Their working environment is relatively harsh, bearing large radial and axial loads, while also adapting to different driving speeds and road conditions. In order to ensure that wheel hub bearings can work properly, reduce friction, reduce wear, and improve sealing and heat dissipation, good lubrication is essential. Grease can form an oil film between the rolling elements and raceways of the bearing, effectively reducing the coefficient of friction, reducing direct metal-to-metal contact, and thus extending the service life of the bearing.

[0003] Traditional grease application involves applying grease to a scraper and then manually spreading it onto the wheel hub bearing. This method is not only time-consuming but also makes it difficult to ensure even grease distribution on the bearing surface, often resulting in uneven grease distribution. Furthermore, the grease injection process can contaminate surrounding areas and lead to waste. Additionally, due to the properties of grease, it tends to accumulate in the channels. Currently, the market utilizes multiple sets of angled oil outlets arranged in a ring array on the grease injection mold and mandrel to spray grease into the bearing grooves at different angles. This, combined with the centrifugal force of the rotating bearing, helps prevent localized accumulation. However, this method still cannot effectively and evenly distribute grease on the bearing, leading to insufficient lubrication in certain areas, increasing the risk of wear and failure. Additionally, some grease is wasted because it doesn't reach the bearing, causing spillage and environmental impact while increasing costs. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a wheel hub bearing grease uniform injection structure, which aims to improve the problem in the prior art where the grease is not evenly applied to the bearing, resulting in insufficient lubrication in some parts of the bearing, and the grease will not be injected into the bearing, thus affecting the environment.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a wheel hub bearing grease uniform injection structure, comprising a worktable, a frame fixedly connected to the top of the outer wall of the worktable, a hydraulic rod slidably connected to the top of the inner wall of the frame, a movable plate fixedly connected to the top of each of the two hydraulic rods, an oil supply pipe fixedly connected to the bottom of the outer wall of the movable plate, an oil injection ring fixedly connected to the bottom of the outer wall of the oil supply pipe, and a needle fixedly connected to the bottom of the outer wall of the oil injection ring, rails being provided on the left and right sides of the inner wall of the hydraulic rods, a support block fixedly connected to the inside of the worktable, a protective shell fixedly connected to the inside of the support block, a drive assembly fixedly connected to the inside of the support block, and a circulation structure fixedly connected to the rear side of the outer wall of the worktable, the circulation structure being used for cleaning grease.

[0006] As a further description of the above technical solution:

[0007] The circulation structure includes a water tank, the front side of the outer wall of the water tank is fixedly connected to the workbench, a water pump is fixedly connected inside the water tank, the output end of the water pump is connected to a water supply pipe, the top end of the water supply pipe is connected to an output pipe, the front side of the outer wall of the output pipe is connected to a nozzle, a water pump is fixedly connected to the bottom of the inner wall of the workbench, a drainage hole is opened on the top of the outer wall of the workbench, and a filter plate is fixedly connected to the middle of the inner wall of the workbench.

[0008] As a further description of the above technical solution:

[0009] The drive assembly includes a motor, the outer wall of which is fixedly connected to the protective shell, and a rotating shaft is fixedly connected to the output end of the motor.

[0010] As a further description of the above technical solution:

[0011] A base is fixedly connected to the top of the rotating shaft, and a fixing block is fixedly connected to the top of the outer wall of the base.

[0012] As a further description of the above technical solution:

[0013] A rotating door is rotatably connected to the front side of the outer wall of the workbench, and a handle is fixedly connected to the front side of the outer wall of the rotating door.

[0014] As a further description of the above technical solution:

[0015] A support block 2 is fixedly connected to the bottom of the outer wall of the output pipe, and a valve is fixedly connected to the end of the output pipe.

[0016] As a further description of the above technical solution:

[0017] The outer wall of the oil pipeline is connected to a transmission pipe, and the end of the transmission pipe is connected to an oil drum, which is used to store and stir the oil.

[0018] As a further description of the above technical solution:

[0019] Limiting blocks are fixedly connected to the bottom of the inner wall of the track, and a water injection pipe is connected to the rear side of the outer wall of the water tank.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the bearing is first placed on the base and fixed by the gap between the fixing block and the bearing. Then, the hydraulic rod is started to lower the oil supply pipe and align the oil injection ring on the oil supply pipe with the bearing. At this time, the motor in the protective shell is started, and the motor drives the rotating shaft to rotate, thereby driving the base to rotate and the bearing to rotate. Then, the oil is added to it, so that uniform filling can be achieved.

[0022] 2. In this utility model, water is first pumped into the water supply pipe by the water pump in the water tank, then into the output pipe by the water supply pipe, and finally sprayed out by the nozzle for cleaning. During the cleaning process, some water will flow into the filter plate inside the workbench through the drainage hole. After being filtered by the filter plate, the water flows to the bottom and is then pumped into the water tank by the water pump to complete the circulation. Attached Figure Description

[0023] Figure 1 This is a front perspective view of a wheel hub bearing grease uniform injection structure proposed in this utility model;

[0024] Figure 2 This is a rear perspective view of a wheel hub bearing grease uniform injection structure proposed in this utility model;

[0025] Figure 3 This is a partially exploded view of the protective shell of a wheel hub bearing with a uniform grease injection structure proposed in this utility model;

[0026] Figure 4 This is a partial top view of a workbench for a wheel hub bearing grease uniform injection structure proposed in this utility model;

[0027] Figure 5 This is a partial structural diagram of the front side of the workbench for a wheel hub bearing grease uniform injection structure proposed in this utility model.

[0028] Legend:

[0029] 1. Workbench; 2. Circulation structure; 201. Water tank; 202. Water pump one; 203. Water supply pipe; 204. Output pipe; 205. Nozzle; 206. Water pump two; 207. Filter plate; 208. Drain hole; 3. Frame; 4. Hydraulic rod; 5. Moving plate; 6. Oil supply pipe; 7. Oil injection ring; 8. Needle; 9. Track; 10. Support block one; 11. Protective shell; 12. Motor; 13. Rotating shaft; 14. Base; 15. Fixing block; 16. Rotating door; 17. Handle; 18. Support block two; 19. Transmission pipe; 20. Oil drum; 21. Limiting block; 22. Valve; 23. Water injection pipe. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see the appendix Figure 1 - Appendix Figure 3 This utility model provides an embodiment of a wheel hub bearing grease uniform injection structure, including a workbench 1. The top of the outer wall of the workbench 1 is connected to a frame 3 by a fixed connection. The top of the inner wall of the frame 3 is equipped with two hydraulic rods 4 by a sliding connection. The top of each of the two hydraulic rods 4 is fixedly connected to a movable plate 5. The bottom of the outer wall of the movable plate 5 is fixedly connected to an oil supply pipe 6. The bottom of the outer wall of the oil supply pipe 6 is fixedly connected to an oil injection ring 7. The bottom of the outer wall of the oil injection ring 7 is further fixedly connected to multiple needles 8. In addition, the left and right sides of the inner wall of the hydraulic rods 4 are provided with rails 9 to facilitate the smooth sliding of the movable plate 5. Inside the workbench 1, a support block 10 is fixedly connected. Inside the support block 10, a protective shell 11 is also fixedly connected. Inside the support block 10, a drive assembly is fixedly connected. A circulation structure 2 is fixedly connected to the rear side of the outer wall of the workbench 1. The circulation structure 2 is used to clean the grease.

[0032] Specifically, a frame 3 is fixed on the top of the workbench 1. Two hydraulic rods 4 are slidably installed on the top of the inner wall of the frame 3. Each rod is connected to a movable plate 5 at its top. An oil supply pipe 6 is connected to the bottom of the movable plate 5. An oil injection ring 7 is connected to the bottom of the oil supply pipe 6. Multiple needles 8 are provided at the bottom of the oil injection ring 7 to inject grease into the wheel hub bearing. The rails 9 on both sides of the inner wall of the hydraulic rods 4 ensure smooth sliding of the movable plate 5. The workbench 1 contains a support block 10 and a protective shell 11. The support block 10 has a built-in drive component to provide power. The circulation structure 2 on the rear side of the workbench 1 is used to clean the grease and keep the equipment clean.

[0033] Please see the appendix Figure 4 - Appendix Figure 5 The circulation structure 2 includes a water tank 201. The front part of the outer wall of the water tank 201 is tightly connected to the workbench 1 by a fixed connection to ensure its stability. Inside the water tank 201, a water pump 202 is fixedly connected. The main function of the water pump 202 is to provide power. The output end of the water pump 202 is connected to the water supply pipe 203 through a pipe. The top of the water supply pipe 203 is further connected to the output pipe 204. The front part of the outer wall of the output pipe 204 is connected to the nozzle 205. The nozzle 205 is used to spray water evenly. In addition, another water pump 206 is fixedly connected to the bottom of the inner wall of the workbench 1 to assist the water circulation. A drainage hole 208 is opened at the top of the outer wall of the workbench 1 to drain excess water and prevent water accumulation. At the same time, a filter plate 207 is fixedly connected to the middle of the inner wall of the workbench 1. The function of the filter plate 207 is to filter impurities and ensure water quality.

[0034] Specifically, the front of the water tank 201 is fixedly connected to the workbench 1. A water pump 202 is fixed inside the water tank 201 to provide power. Its output end is connected to the water supply pipe 203 via a pipe, and then connected to the output pipe 204. The front of the output pipe 204 is connected to the nozzle 205, which can spray water evenly. A water pump 206 is fixed at the bottom of the inner wall of the workbench 1. A drainage hole 208 is provided at the top of the workbench 1 to drain excess water and prevent water accumulation. A filter plate 207 is fixed in the middle of the inner wall of the workbench 1 to filter impurities and ensure water quality.

[0035] Please see the appendix Figure 2 - Appendix Figure 3 The drive assembly includes a motor 12, the outer wall of which is tightly connected to the protective shell 11 by a fixed connection to ensure the stability and safety of the motor 12 during operation. The output end of the motor 12 is firmly connected to a rotating shaft 13, which plays a key transmission role in the drive assembly. The top part of the rotating shaft 13 is fixedly connected to the base 14, which serves as a support structure. The top of the outer wall of the base 14 is further fixedly connected to multiple fixing blocks 15, which are used to connect and fix to the bearings. The front side of the outer wall of the workbench 1 is designed with a rotating door 16 that is rotatably connected. The front side of the outer wall of the rotating door 16 is also fixedly connected to a handle 17, which is designed to facilitate the operator to hold and operate the rotating door 16.

[0036] Specifically, the outer wall of the motor 12 is fixed to the protective shell 11 to ensure stable and safe operation. The output end of the motor 12 is connected to the rotating shaft 13 for transmission. The top of the rotating shaft 13 is fixed to the base 14. The base 14 is provided with multiple fixing blocks 15 for connecting and fixing bearings. There is a rotating door 16 on the front side of the workbench 1, and a handle 17 is provided on it for easy operation.

[0037] Please see the appendix Figure 1 - Appendix Figure 2 A support block 28 is firmly fixed to the bottom of the outer wall of the output pipe 204. The support block 28 provides stable support for the output pipe 204. A valve 22 is fixedly connected to the end of the output pipe 204. The valve 22 is used to control the flow of fluid in the output pipe 204. A transmission pipe 19 is connected to the rear side of the outer wall of the oil pipe 6 through a communication method. The end of the transmission pipe 19 is connected to an oil drum 20. The main function of the oil drum 20 is to store and stir the oil to ensure that the oil can be evenly mixed before use. Limiting blocks 21 are firmly fixed to the bottom of the inner wall of the track 9. These limiting blocks 21 are used to limit the movement on the fixed track 9 to ensure that it runs smoothly. A water injection pipe 23 is connected to the rear side of the outer wall of the water tank 201 through a communication method.

[0038] Specifically, the bottom of the outer wall of the output pipe 204 is fixed with a support block 218 to provide stable support, and the end is connected to a valve 22 to control the flow of fluid. The oil pipe 6 is connected to a transmission pipe 19 to an oil drum 20 for storing the stirred grease. The bottom of the inner wall of the track 9 is provided with a limit block 21 to restrict the movement of the moving plate 5 and ensure smooth operation. The water tank 201 is connected to a water injection pipe 23 at the rear.

[0039] Working principle: First, place the bearing on the base 14 above the support block 10 and fix it with the gap between the fixing block 15 and the bearing. Then, use the hydraulic rod 4 on the frame 3 to move the moving plate 5 downward. After the needle 8 is aligned with the bearing, start the motor 12 in the protective shell 11. The motor 12 will rotate the shaft 13, which will then drive the base 14 to rotate, causing the bearing that is engaged with the fixing block 15 to rotate as well. At this time, lubrication can be performed. Since the bearing is rotating during the lubrication process, the grease is injected evenly into the bearing, preventing the grease from hindering the normal flow of the lubricant inside the bearing.

[0040] During the filling process, grease will spill onto the workbench 1. At this time, the water pump 202 inside the water tank 201 can be started. The water pump 202 will pump water out of the water tank 201 and deliver it through the water supply pipe 203 to the output pipe 204. Then, the water will be sprayed out from the nozzle 205 on the output pipe 204 to rinse the top surface of the workbench 1. During the rinsing process, some water will flow into the interior through the drainage holes 208 on the top surface of the workbench 1. After passing through the filter plate 207 to filter out some iron filings and grease, the water will flow into the area below the filter plate 207. Then, the water pump 206 will deliver the water back into the water tank 201 to complete the circulation. This saves costs and also cleans the workbench 1.

[0041] 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 uniform injection structure for wheel hub bearings, comprising a worktable (1), characterized in that: A frame (3) is fixedly connected to the top of the outer wall of the workbench (1). A hydraulic rod (4) is slidably connected to the top of the inner wall of the frame (3). A moving plate (5) is fixedly connected to the top of each of the two hydraulic rods (4). An oil supply pipe (6) is fixedly connected to the bottom of the outer wall of the moving plate (5). An oil injection ring (7) is fixedly connected to the bottom of the outer wall of the oil supply pipe (6). A needle (8) is fixedly connected to the bottom of the outer wall of the oil injection ring (7). Tracks (9) are provided on the left and right sides of the inner wall of the hydraulic rod (4). A support block (10) is fixedly connected inside the workbench (1). A protective shell (11) is fixedly connected inside the support block (10). A drive assembly is fixedly connected inside the support block (10). A circulation structure (2) is fixedly connected to the rear side of the outer wall of the workbench (1). The circulation structure (2) is used to clean grease.

2. The wheel hub bearing grease uniform injection structure according to claim 1, characterized in that: The circulation structure (2) includes a water tank (201), the front side of the outer wall of the water tank (201) is fixedly connected to the workbench (1), a water pump (202) is fixedly connected inside the water tank (201), the output end of the water pump (202) is connected to a water supply pipe (203), the top end of the water supply pipe (203) is connected to an output pipe (204), the front side of the outer wall of the output pipe (204) is connected to a nozzle (205), a water pump (206) is fixedly connected to the bottom of the inner wall of the workbench (1), a drainage hole (208) is opened on the top of the outer wall of the workbench (1), and a filter plate (207) is fixedly connected to the middle of the inner wall of the workbench (1).

3. The wheel hub bearing grease uniform injection structure according to claim 1, characterized in that: The drive assembly includes a motor (12), the outer wall of which is fixedly connected to the protective shell (11), and a rotating shaft (13) is fixedly connected to the output end of the motor (12).

4. The wheel hub bearing grease uniform injection structure according to claim 3, characterized in that: The top of the rotating shaft (13) is fixedly connected to a base (14), and the top of the outer wall of the base (14) is fixedly connected to a fixing block (15).

5. The wheel hub bearing grease uniform injection structure according to claim 1, characterized in that: A rotating door (16) is rotatably connected to the front side of the outer wall of the workbench (1), and a handle (17) is fixedly connected to the front side of the outer wall of the rotating door (16).

6. The wheel hub bearing grease uniform injection structure according to claim 2, characterized in that: A support block 2 (18) is fixedly connected to the bottom of the outer wall of the output pipe (204), and a valve (22) is fixedly connected to the end of the output pipe (204).

7. The wheel hub bearing grease uniform injection structure according to claim 1, characterized in that: The outer wall of the oil pipeline (6) is connected to a transmission pipe (19), and the end of the transmission pipe (19) is connected to an oil drum (20), which is used to store and stir the oil.

8. The wheel hub bearing grease uniform injection structure according to claim 2, characterized in that: Limiting blocks (21) are fixedly connected to the bottom of the inner wall of the track (9), and a water injection pipe (23) is connected to the rear side of the outer wall of the water tank (201).

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