Powder metallurgy oil bearing

Abstract

The utility model discloses a powder metallurgy oil-retaining bearing, which belongs to the technical field of powder metallurgy, solves the problem that lubricating oil cannot be stably recycled when the existing oil-retaining bearing runs, and comprises a bearing inner ring, bearing balls and a bearing outer ring, and a plurality of groups of bearing balls are arranged on the outer surface of the bearing inner ring. According to the utility model, the bearing inner ring and the bearing outer ring are arranged, so that lubricating oil stored in the bearing can be discharged to lubricate the whole bearing by utilizing high temperature generated during the operation of the bearing when the bearing is in operation, and the bulges on the two sides of the flow guide part can be used for guiding the flow of the bearing, so that the flow guide effect is improved. According to the lubricating oil recycling device, extruded lubricating oil can be prevented from being splashed to the outside of the bearing, subsequently, the lubricating oil can be guided to enter the bearing again to complete recycling of the lubricating oil, subsequently, the lubricating oil in the bearing can be supplemented in time, the overall lubricating oil supplementing step is simplified, and therefore the stability of equipment during operation is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of powder metallurgy, and particularly relates to a powder metallurgy oil-impregnated bearing. Background Technique

[0002] Powder metallurgy is a process technology for producing metal powders or using metal powders as raw materials, through forming and sintering, to manufacture metal materials, composite materials, and various types of products. This technology is used in the production of oil-impregnated bearings. Utilizing the porosity of the sintered body, a certain amount of lubricating oil is impregnated, and it is used in a self-lubricating state.

[0003] Chinese Utility Model Patent CN219692019U discloses an oil-storable powder metallurgy oil-impregnated bearing, which includes an outer bearing ring and an inner bearing ring. Oil storage grooves are provided inside both the outer bearing ring and the inner bearing ring. Oil storage pipes are fixedly connected inside the oil storage grooves. An oil inlet hole is provided at the top of the oil storage pipe, and the oil inlet hole is communicated with the oil storage pipe.

[0004] The above design can store and release lubricating oil through the cooperation of multiple components to keep the bearing lubricated. However, there are certain problems in actual use. Specifically, when the oil-impregnated bearing rotates, the lubricating oil inside the bearing will escape from the bearing under the action of centrifugal force, resulting in a reduction in the total amount of lubricating oil and affecting the lubrication effect of the bearing itself. Summary of the Utility Model

[0005] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and title of the specification of this application, to avoid obscuring the purpose of this part, the abstract, and the title of the utility model. However, such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] To solve the problems raised in the above background technique, the utility model adopts the following technical solutions.

[0007] A powder metallurgy oil-impregnated bearing includes an inner bearing ring, bearing balls, and an outer bearing ring. Multiple groups of bearing balls are arranged on the outer surface of the inner bearing ring. The outer bearing ring is arranged outside the bearing balls. The inner bearing ring rotates inside the outer bearing ring. A diversion part for assisting in the recovery of lubricating oil is arranged inside the inner bearing ring, and matching grooves for absorbing and discharging lubricating oil are equidistantly arranged inside the diversion part.

[0008] As a preferred technical solution of the utility model, the inner bearing ring includes a main component inner ring, a diversion part, and matching grooves. The main component inner ring is rotatably installed inside the outer bearing ring. The diversion part is provided on the outer surface of the main component inner ring. The matching grooves are equidistantly arranged inside the diversion part, and the overall cross-section of the diversion part is trapezoidal.

[0009] As a preferred technical solution of the present utility model, the inner ring of the bearing further includes an inner discharge groove and a collection hole. The inner wall of the main component inner ring is provided with an inner discharge groove, and collection holes are symmetrically arranged inside the main component inner ring.

[0010] As a preferred technical solution of the present utility model, a hole groove for conveying lubricating oil is provided at the end of the collection hole inside the main component inner ring.

[0011] As a preferred technical solution of the present utility model, the outer ring of the bearing includes a mating outer ring, a rolling groove, and an input component. The mating outer ring is arranged outside the inner ring of the bearing. A rolling groove is provided inside the mating outer ring, and the rolling groove is slidably connected to the bearing balls. The input component is fixedly installed on the surface of the mating outer ring.

[0012] As a preferred technical solution of the present utility model, a storage bin for storing lubricating oil is provided inside the input component, and an oil outlet hole is jointly provided between the storage bin and the inside of the mating outer ring.

[0013] As a preferred technical solution of the present utility model, a sealing plug for assisting in sealing the storage bin is installed on the upper surface of the input component.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] In the present utility model, by providing the inner ring of the bearing and the outer ring of the bearing, when the bearing is running, the high temperature generated during the operation of the bearing can be utilized to discharge the lubricating oil stored inside the bearing, lubricate the whole bearing, and the protrusions on both sides of the guiding part can prevent the extruded lubricating oil from splashing outside the bearing. Subsequently, it can also guide the lubricating oil to re-enter the bearing interior to complete the recovery of the lubricating oil. Moreover, the lubricating oil inside the bearing can be replenished in a timely manner, simplifying the overall lubricating oil replenishment steps, thereby ensuring the stability of the equipment during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a perspective view of the overall structure of the present utility model.

[0017] Figure 2 It is a perspective view of the structure after the inner ring of the bearing and the outer ring of the bearing of the present utility model are disassembled.

[0018] Figure 3 It is a perspective view of the structure of the inner ring of the bearing of the present utility model.

[0019] Figure 4 It is a sectional view of the structure of the inner ring of the bearing in the present utility model.

[0020] Figure 5 It is a schematic diagram of the structure of the outer ring of the bearing in the present utility model.

[0021] Figure 6 This is a structural cross-sectional view of the outer ring of the bearing in the present utility model.

[0022] The corresponding relationship between the reference numerals and component names in the figure is as follows:

[0023] 1. Inner ring of bearing; 11. Inner ring of main component; 12. Flow guiding part; 13. Fitting groove; 14. Inner discharge groove; 15. Collection hole; 2. Bearing ball; 3. Outer ring of bearing; 31. Fitting outer ring; 32. Rolling groove; 33. Input component. Specific embodiments

[0024] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings of the specification.

[0025] In the following description, many specific details are set forth in order to fully understand the present utility model, but the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0026] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present utility model. The "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that excludes other embodiments. The present utility model provides the following embodiments.

[0027] As Figure 1 and Figure 2 shown, it is a structural schematic diagram of the oil-impregnated bearing in this embodiment, including an inner ring 1 of the bearing, a bearing ball 2 and an outer ring 3 of the bearing. A plurality of bearing balls 2 are arranged on the outer surface of the inner ring 1 of the bearing. An outer ring 3 of the bearing is arranged outside the bearing balls 2. The inner ring 1 of the bearing rotates inside the outer ring 3 of the bearing. A flow guiding part 12 for assisting in the recovery of lubricating oil is arranged inside the inner ring 1 of the bearing, and fitting grooves 13 for absorbing and discharging lubricating oil are equidistantly arranged inside the flow guiding part 12.

[0028] During use, multiple groups of bearing balls 2 are placed on the inner wall of the bearing outer ring 3, and then the bearing inner ring 1 is installed inside the bearing outer ring 3. With the cooperation of the bearing balls 2, the bearing inner ring 1 rotates stably inside the bearing outer ring 3. When the bearing inner ring 1 rotates itself, its own temperature will gradually increase. Because the equipment is mainly supported by powder metallurgy technology, the lubricating oil contained in the bearing inner ring 1 is discharged due to the reduction in the size of the internal hole groove of the bearing inner ring 1, thereby lubricating the entire bearing. Subsequently, as the equipment stops running, the temperature of the bearing inner ring 1 itself drops, the size of the internal hole groove of the bearing expands, and the discharged lubricating oil is collected to complete the circulation of the lubricating oil.

[0029] By the attached Figure 3 As shown, it is a schematic diagram of the structure of the bearing inner ring 1 in this embodiment, the bearing inner ring 1 includes a main component inner ring 11, a guide portion 12 and a matching groove 13, the main component inner ring 11 is rotatably installed in the bearing outer ring 3, the main component inner ring 11 is provided with a guide portion 12 on the outer surface, the guide portion 12 is provided with matching grooves 13 at equal intervals, and the overall cross-section of the guide portion 12 is trapezoidal.

[0030] During use, through the opening of the guide part 12, when the bearing inner ring 1 discharges the lubricating oil, the overall discharge angle and discharge position are limited, so that the lubricating oil is concentratedly discharged from the middle end of the guide part 12, and the outside of the bearing ball 2 is lubricated. The rolling of the bearing ball 2 itself is used to achieve lubrication of the entire equipment. The guide part 12 is trapezoidal in shape as a whole, and the heights of both sides are convex compared to the bottom of the guide part 12. When the bearing inner ring 1 rotates as a whole, the lubricating oil under the centrifugal force swing is blocked by the convexities on both sides, reducing the situation where the lubricating oil is directly discharged from the bearing body, and the subsequent lubricating oil will flow along the side of the guide part 12 to the bottom of the guide part 12, which is convenient for collecting the lubricating oil.

[0031] By the attached Figure 4 As shown, it is a schematic diagram of the structure of the inner discharge groove 14 and the collecting hole 15 in this embodiment. The bearing inner ring 1 also includes the inner discharge groove 14 and the collecting hole 15. The inner wall of the main component inner ring 11 is provided with the inner discharge groove 14, and the collecting holes 15 are symmetrically arranged inside the main component inner ring 11.

[0032] During use, through the use of the internal discharge groove 14, the inner ring 11 of the main component will also lubricate its own inner wall during operation, and the opening of the collecting hole 15 facilitates the collection and circulation of the lubricating oil. When the overall temperature of the bearing inner ring 1 increases, the overall aperture size of the collecting hole 15 changes, and the lubricating oil inside the collecting hole 15 is squeezed out.

[0033] By the attached Figure 4 As shown, a hole groove for conveying lubricating oil is opened at the end of the collecting hole 15 inside the inner ring 11 of the main component, which facilitates the circulation of lubricating oil during use and leaves a certain space for storing lubricating oil.

[0034] As shown in the appended Figure 5 figure, it is a schematic structural diagram of the bearing outer ring 3 in this embodiment. The bearing outer ring 3 includes a mating outer ring 31, a rolling groove 32, and an input component 33. The mating outer ring 31 is arranged outside the bearing inner ring 1. A rolling groove 32 is formed inside the mating outer ring 31. The rolling groove 32 is slidably connected with the bearing balls 2. The input component 33 is fixedly installed on the surface of the mating outer ring 31.

[0035] During use, the bearing balls 2 roll on the inner surface of the rolling groove 32 to assist the overall stable operation of the device. When it is necessary to replenish lubricating oil for the whole device, through the use of the input component 33, the lubricating oil is quickly input into the bearing outer ring 3, so that the lubricating oil flows into the bearing inner ring 1 to complete the replenishment of the lubricating oil.

[0036] As shown in the appended Figure 6 figure, a storage bin for storing lubricating oil is formed inside the input component 33. An oil outlet hole is formed jointly with the inside of the mating outer ring 31. During use, the lubricating oil is input into the storage bin, and then through the cooperation of the oil outlet hole, the lubricating oil in the storage bin is discharged onto the surfaces of the bearing balls 2 and the bearing inner ring 1 to complete the replenishment of the lubricating oil.

[0037] As shown in the appended Figure 6 figure, a sealing plug for assisting in sealing the storage bin is installed on the upper surface of the input component 33. During use, the overall sealing effect of the input component 33 is ensured, preventing the lubricating oil in the storage bin from being discharged, and ensuring the stability of the component during use.

[0038] The above content further elaborates on the present utility model in combination with specific embodiments. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or substitutions can still be made, which should all be regarded as falling within the protection scope determined by the claims submitted for the present utility model.

Claims

1. A powder metallurgy oil-impregnated bearing, characterized in that, The invention comprises a bearing inner ring (1), bearing balls (2) and a bearing outer ring (3); the outer surface of the bearing inner ring (1) is provided with a plurality of groups of bearing balls (2); the outer surface of the bearing balls (2) is provided with a bearing outer ring (3); the bearing inner ring (1) rotates inside the bearing outer ring (3); a guide portion (12) for assisting in the recovery of lubricating oil is provided inside the bearing inner ring (1); matching grooves (13) for absorbing and discharging lubricating oil are provided at equal intervals inside the guide portion (12).

2. The powder metallurgy oil-impregnated bearing according to claim 1, wherein: The bearing inner ring (1) comprises a main component inner ring (11), a flow guide portion (12) and a matching groove (13); the main component inner ring (11) is rotatably mounted in the bearing outer ring (3); the main component inner ring (11) is provided with a flow guide portion (12) on its outer surface; matching grooves (13) are provided in the flow guide portion (12) at equal intervals; and the overall cross section of the flow guide portion (12) is in a trapezoidal shape.

3. The powder metallurgy oil-impregnated bearing according to claim 2, characterized in that: The bearing inner ring (1) further comprises an inner discharge groove (14) and a collecting hole (15); the inner wall of the main component inner ring (11) is provided with the inner discharge groove (14); and the collecting holes (15) are symmetrically arranged inside the main component inner ring (11).

4. The powder metallurgy oil-impregnated bearing according to claim 3, wherein: A hole groove for conveying lubricating oil is provided inside the inner ring (11) of the main component at the end of the collecting hole (15).

5. The powder metallurgy oil-impregnated bearing according to claim 1, characterized in that: The bearing outer ring (3) comprises a matching outer ring (31), a rolling groove (32) and an input component (33); the matching outer ring (31) is arranged outside the bearing inner ring (1); a rolling groove (32) is provided inside the matching outer ring (31); the rolling groove (32) is slidably connected to the bearing ball (2); and the input component (33) is fixedly mounted on the surface of the matching outer ring (31).

6. The powder metallurgy oil-impregnated bearing according to claim 5, characterized in that: The input component (33) is provided with a storage bin for storing lubricating oil, and the storage bin and the interior of the matching outer ring (31) are provided with an oil outlet hole.

7. The powder metallurgy oil-impregnated bearing according to claim 6, wherein: A sealing plug for assisting the sealing of the storage bin is installed on the upper surface of the input component (33).

Images