Self-lubricating guide wheel set structure

Abstract

This utility model relates to the field of mechanical engineering technology, specifically a self-lubricating guide wheel assembly structure, including a wheel frame. A bearing is located in the center of the wheel frame, and a wheel body is rotatably mounted on the outer side of the bearing. Annular grooves are formed on both sides of the center of the wheel body. Guide channels are formed around the perimeter of the upper part of the center of each of the two annular grooves. A cover plate is provided on one side of the center of each of the two annular grooves, and a sealing ring is fixedly installed on one side of each of the two cover plates. An oil injection hole is penetrated through one side of the center of each of the two sealing rings. This utility model stores grease in the annular grooves and uses centrifugal force to precisely deliver grease to the connection between the wheel and the bearing through the guide channels, achieving continuous self-lubrication of the bearing friction surface. The structure of the oil injection hole and plunger allows for grease replenishment without disassembling the wheel, significantly reducing maintenance costs. Simultaneously, the dual protection of the dust cover and sealing rings ensures the cleanliness and stability of the grease, significantly extending the service life of the wheel assembly.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, specifically to a self-lubricating guide wheel assembly structure. Background Technology

[0002] The guide wheel assembly is a core component in equipment used to guide the direction of movement, bear the load, and assist rolling. Simply put, it is a combination of wheels that determine the direction and load of the equipment. It is widely used in cranes, elevators, conveying machinery, automobiles, and other equipment that require precise guidance and stable movement. Its main core functions are twofold: first, by cooperating with the track (or contact surface), it restricts the movement trajectory of the equipment and prevents deviation; second, it converts the sliding friction of the equipment into rolling friction, reducing running resistance and protecting the track and the equipment itself.

[0003] Traditional guide wheel assemblies mostly rely on manual periodic grease injection for lubrication. They lack built-in grease storage chambers and automatic flow guiding structures, requiring machine shutdown for maintenance. This directly impacts operational efficiency and increases downtime losses, especially for continuously operating equipment such as production lines and cranes. Furthermore, the short grease injection cycle and reliance on manual judgment of grease dosage can easily lead to insufficient grease injection resulting in accelerated wear or excessive grease injection causing waste. These shortcomings are significant. Utility Model Content

[0004] The purpose of this invention is to provide a self-lubricating guide wheel assembly structure to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A self-lubricating guide wheel assembly structure includes a wheel frame, a bearing in the middle of the wheel frame, a wheel body rotatably mounted on the outer side of the bearing, annular grooves on both sides of the middle of the wheel body, guide channels on all four sides above the middle of the two annular grooves, a cover plate on one side of the middle of the two annular grooves, a sealing ring fixedly mounted on one side of the two cover plates, an oil injection hole through one side of the middle of the two sealing rings, a plunger engaged in the middle of the middle of the two oil injection holes, and an internal octagonal hole in the middle of one end of each of the two plungers.

[0006] In some embodiments, a mounting base plate is fixedly installed on the upper end of the wheel frame, and positioning holes are provided at the four corners of the center of the mounting base plate.

[0007] In some embodiments, a fixed shaft is fixedly installed at the middle of the lower end of the wheel frame, and the bearing is disposed on the surface of the fixed shaft. The bearing includes an inner ring and an outer ring, and the wheel body is rotatably mounted on the surface of the outer ring of the bearing.

[0008] In some embodiments, a plurality of balls are uniformly rotatably mounted in the middle of the inner ring and the outer ring, and a dust cover is fixedly mounted on the outer side of the connection between the inner ring and the outer ring.

[0009] In some embodiments, a slot is provided on one side of both ends of the wheel body, a screw hole is provided in the middle of the two slots, a card plate is fixedly installed on one side of the two cover plates, a limit pin is threaded to the middle of the two card plates, and the ends of the two limit pins are threaded to the corresponding screw holes.

[0010] In some embodiments, the sealing ring is located at the connection between the cover plate and the annular groove, and the guide channel penetrates the inner wall of the wheel body and is connected to the outer ring of the bearing.

[0011] This utility model has at least the following beneficial effects: 1. This utility model enables the wheels to self-lubricate during use, ensuring efficient and maintenance-free operation and significantly extending their service life. Through annular groove grease storage, centrifugal force precisely delivers the grease to the connection between the wheel and bearing via a guide channel, achieving continuous self-lubrication of the bearing friction surface. The structure of the oil injection hole and plunger allows for grease replenishment without disassembling the wheel, significantly reducing maintenance costs. Simultaneously, the dual protection of the dust cover and sealing ring ensures the cleanliness and stability of the grease, significantly extending the service life of the wheel assembly.

[0012] 2. In use, the guide channel of this utility model is located above the middle of the wheel body. When the wheel is not rotating, the position of the guide channel can be determined by the position of the oil injection hole, so that it is positioned at the top. At the same time, the grease inside is deposited at the bottom of the storage chamber due to gravity. Therefore, the guide channel located at the top will not flow out of the grease, which can effectively avoid waste. The design of the oil injection hole and plunger makes it easy to replenish the grease later. Maintenance can be completed without disassembling the wheel. The cover plate and sealing ring can effectively prevent dust and moisture from entering the storage chamber and the bearing, thus preventing the grease from being contaminated and deteriorated. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the appearance and structure of this utility model; Figure 2 This is a schematic diagram of the disassembled structure of this utility model; Figure 3 This is a three-dimensional structural diagram of the wheel body of this utility model; Figure 4 This is a schematic diagram of the cross-sectional disassembly structure of the wheel body of this utility model; Figure 5 This is a schematic diagram of the disassembled structure of the wheel body of this utility model.

[0014] In the diagram: 1. Mounting base plate; 11. Wheel frame; 12. Positioning hole; 13. Fixed shaft; 14. Bearing; 15. Inner ring; 16. Outer ring; 17. Ball bearing; 18. Dust cover; 2. Wheel body; 21. Annular groove; 22. Guide channel; 23. Cover plate; 24. Sealing ring; 25. Slot; 26. Screw hole; 27. Clamping plate; 28. Limit pin; 29. ​​Oil injection hole; 30. Plunger; 31. Internal octagonal hole. Detailed Implementation

[0015] 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.

[0016] Example 1: Please refer to Figure 1 - Figure 5 This utility model provides a technical solution: a self-lubricating guide wheel assembly structure, including a wheel frame 11, a bearing 14 in the middle of the wheel frame 11, a wheel body 2 rotatably mounted on the outer side of the bearing 14, annular grooves 21 on both sides of the middle of the wheel body 2, guide channels 22 on all four sides above the middle of the two annular grooves 21, a cover plate 23 on one side of the middle of the two annular grooves 21, a sealing ring 24 fixedly installed on one side of the two cover plates 23, and an oil injection hole 29 penetrating one side of the middle of the two sealing rings 24, with the middle of the two oil injection holes 29... Both plungers 30 are engaged, and an inner octagonal hole 31 is opened in the middle of one end of each plunger 30. A groove 25 is opened on one side of both ends of the middle of the wheel body 2. A screw hole 26 is opened in the middle of each groove 25. A retaining plate 27 is fixedly installed on one side of each cover plate 23. A limit pin 28 is threadedly connected to the middle of each retaining plate 27. The ends of the two limit pins 28 are threadedly connected to the corresponding screw holes 26. The sealing ring 24 is located at the connection between the cover plate 23 and the annular groove 21. The guide channel 22 penetrates the inner wall of the wheel body 2 and is connected to the outer ring 16 of the bearing 14.

[0017] In this embodiment, annular grooves 21 are formed on both sides of the middle part of the wheel body 2. The annular grooves 21 serve as grease storage chambers and are directly connected to the outer ring 16 of the bearing 14 by the guide channel 22. When the wheel rotates, centrifugal force is used to accurately deliver the grease to the friction surface of the bearing 14 to achieve continuous lubrication. The guide channel 22 is located above the middle part of the wheel body 2. When the wheel is not rotating, the position of the guide channel 22 is determined by the position of the oil filling hole 29, so that it is positioned at the top. The grease inside is deposited at the bottom of the storage chamber due to gravity, so the guide channel 22 located at the top will not flow out, avoiding waste. The design of the oil filling hole 29 and the plunger 30 facilitates the replenishment of grease later without disassembling the wheel. The cover plate 23, in conjunction with the sealing ring 24, effectively prevents dust and moisture from entering the storage chamber and the interior of the bearing 14, thus avoiding grease contamination and deterioration. At the same time, it prevents grease leakage, ensures stable grease storage, and extends the single lubrication cycle. It is especially suitable for harsh working conditions such as outdoor and dusty environments. The cooperation of the slot 25, the card plate 27 and the limiting pin 28 enables the cover plate 23 to be quickly positioned and firmly fixed, resulting in high assembly efficiency. The inner octagonal hole 31 facilitates the removal and installation of the plunger 30 with tools, making the oil filling operation simpler. The distribution design of the guide channel 22 ensures that the grease evenly covers the outer ring 16 of the bearing 14, reducing local wear and improving the overall service life of the wheel.

[0018] Example 2: As Figure 1 - Figure 2 As shown, a mounting base plate 1 is fixedly installed on the upper end of the wheel frame 11. Positioning holes 12 are provided at the four corners of the middle part of the mounting base plate 1. A fixed shaft 13 is fixedly installed in the middle of the lower end of the wheel frame 11. A bearing 14 is provided on the surface of the fixed shaft 13. The bearing 14 includes an inner ring 15 and an outer ring 16. The wheel body 2 is rotatably installed on the surface of the outer ring 16 of the bearing 14. Multiple balls 17 are evenly rotatably installed in the middle of the inner ring 15 and the outer ring 16. A dust cover 18 is fixedly installed on the outer side of the connection between the inner ring 15 and the outer ring 16.

[0019] In this embodiment, the four positioning holes 12 of the mounting base plate 1 can be used to quickly fix the wheel assembly to the equipment with bolts. The symmetrical distribution of the positioning holes 12 ensures uniform force during installation and avoids uneven wheel wear caused by fixation offset. The fixed connection between the wheel frame 11 and the mounting base plate 1 enhances the overall rigidity, can stably bear the weight of the equipment, and is suitable for different load scenarios. The fixed shaft 13 serves as the installation reference for the bearing 14 and is rigidly connected to the inner ring 15 of the bearing 14. The outer ring 16 is fixed to the wheel body 2. The ball bearings 17 achieve efficient cooperation between the inner ring 15 and the outer ring 16 as the wheel rotates, converting sliding friction into rolling friction and greatly reducing rotational resistance. The dust cover 18 at the connection between the inner and outer rings 16 of the bearing 14 can effectively block external dust and debris from entering the friction area of ​​the ball bearings 17, avoiding impurities from causing the bearing 14 to jam or wear to be aggravated.

[0020] Working principle: like Figure 1 - Figure 5 As shown, during use, the inner ring 15 of the bearing 14 is rigidly connected to the fixed shaft 13, and the outer ring 16 is fixed to the wheel body 2. The ball bearing 17 achieves rolling contact between the inner ring 15 and the outer ring 16. The dust cover 18 seals the connection between the inner and outer rings 16 of the bearing 14, preventing external impurities from entering. The annular groove 21 of the wheel body 2 serves as a grease storage chamber. The cover plate 23, through the engagement of the retaining plate 27, the limiting pin 28, the retaining groove 25, and the screw hole 26, achieves quick positioning and fastening. The sealing ring 24 seals the connection between the cover plate 23 and the annular groove 21, preventing grease leakage or dust entry. The user can inject grease into the annular groove 21 through the oil filling hole 29, and then seal the oil filling hole 29 with the plunger 30. The positioning hole 12 of the mounting base plate 1 is used to fix the entire wheel assembly to the bottom of the equipment with bolts, completing the assembly.

[0021] When the wheel is not rotating, the grease is deposited at the bottom of the annular groove 21 due to gravity. The guide channel 22 is located above the wheel, preventing grease leakage and avoiding waste. The dust cover 18 and the sealing ring 24 work together to ensure the grease is clean and leak-free. When the wheel rotates, the annular groove 21 rotates synchronously with the wheel body 2. The grease is thrown against the groove wall under centrifugal force and accurately delivered to the outer ring 16 surface of the bearing 14 through the guide channel 22, directly wetting the friction surfaces of the balls 17 and the inner and outer rings 16, achieving continuous self-lubrication. When the grease is consumed, the plunger 30 can be unscrewed, and grease can be replenished through the oil filling hole 29 without disassembling the wheel, which can greatly improve maintenance efficiency. When the wheel body 2 is under equipment load, the pressure is transmitted to the balls 17 through the outer ring 16, and then to the fixed shaft 13 through the inner ring 15. The rolling contact of the balls 17 converts the sliding friction of the wheel into rolling friction, greatly reducing rotational resistance and reducing component wear. This device, through the synergistic design of self-lubrication, rolling friction, and sealing protection, achieves the combined advantages of maintenance-free self-lubrication and adaptability to complex environments, significantly improving the service life and operational reliability of wheel sets.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A self-lubricating guide wheel group structure, comprising a wheel frame (11), a bearing (14) is arranged in the middle of the wheel frame (11), and a wheel body (2) is rotatably installed on the outer side of the bearing (14), characterized in that: Both sides of the middle of the wheel body (2) are provided with annular grooves (21), and guide channels (22) are provided around the middle of the two annular grooves (21). One side of the middle of the two annular grooves (21) is provided with a cover plate (23), and one side of the two cover plates (23) is fixedly installed with a sealing ring (24). One side of the middle of the two sealing rings (24) is provided with an oil injection hole (29). The middle of the two oil injection holes (29) is fitted with a plunger (30), and the middle of one end of the two plungers (30) is provided with an inner octagonal hole (31).

2. A self-lubricating guide wheel set structure according to claim 1, characterized in that: The upper end of the wheel frame (11) is fixedly installed with a mounting base plate (1), and positioning holes (12) are provided at the four corners of the middle part of the mounting base plate (1).

3. The self-lubricating guide wheel assembly structure according to claim 2, characterized in that: A fixed shaft (13) is fixedly installed at the middle of the lower end of the wheel frame (11). The bearing (14) is located on the surface of the fixed shaft (13). The bearing (14) includes an inner ring (15) and an outer ring (16). The wheel body (2) is rotatably installed on the surface of the outer ring (16) of the bearing (14).

4. The self-lubricating guide wheel assembly structure according to claim 3, characterized in that: Multiple balls (17) are evenly rotated in the middle of the inner ring (15) and the outer ring (16), and a dust cover (18) is fixedly installed on the outer side of the connection between the inner ring (15) and the outer ring (16).

5. The self-lubricating guide wheel assembly structure according to claim 1, characterized in that: The wheel body (2) has a slot (25) on one side of both ends in the middle, and a screw hole (26) is provided in the middle of the two slots (25). A plate (27) is fixedly installed on one side of the two cover plates (23). A limit pin (28) is threadedly connected to the middle of the two plates (27). The ends of the two limit pins (28) are threadedly connected to the corresponding screw holes (26).

6. The self-lubricating guide wheel assembly structure according to claim 1, characterized in that: The sealing ring (24) is located at the connection between the cover plate (23) and the annular groove (21), and the guide channel (22) passes through the inner wall of the wheel body (2) and is connected to the outer ring (16) of the bearing (14).

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