Oil slinger ring and bearing unit using the same

Abstract

The present invention relates to the field of bearing technology, and in particular to an oil slinger ring and a bearing unit using the same, wherein the oil slinger ring comprises a center ring, a first retaining ring and a second retaining ring; the center ring is located between the first retaining ring and the second retaining ring, and an oil storage tank is arranged outside the center ring. A drainage ring is arranged on one side of the first retaining ring close to the center ring, and a third flow channel is arranged inside the drainage ring, the center ring and the second retaining ring, and a fourth flow channel is also arranged inside the first retaining ring. When a large amount of lubricating oil accumulates in the oil storage tank of the oil slinger ring, part of it is diverted to the second retaining ring through the third flow channel, and part of it is diverted to the first retaining ring through the fourth flow channel, so as to accelerate the discharge of the lubricating oil in the oil storage tank. When the center ring is installed at an angle and the first retaining ring is lower than the second retaining ring, the lubricating oil in the oil storage tank will gather to the first retaining ring, resulting in a reduction in the amount of lubricating oil flowing to the second retaining ring. By making the number of the third flow channels greater than the fourth flow channels, the amount of lubricating oil flowing to the first retaining ring and the second retaining ring is made as balanced as possible.

Description

Technical Field

[0001] The invention relates to the technical field of bearings, and in particular to an oil slinger and a bearing unit using the same. Background Art

[0002] The bearings in the reducer need good lubrication during operation to reduce friction and wear, improve efficiency, prevent rust and dissipate heat. Generally, the rotation of the gears is used to bring up the lubricating oil and throw it into the raceway of the bearing for lubrication. However, due to the inclination of the reducer main shaft and the high position of the front bearing, it is easy to cause inadequate lubrication. In the prior art, the invention patent with the authorization announcement number CN113154017B discloses an oil-slinging ring for lubricating the main bevel gear bearing and its main bevel gear bearing. The lubricating oil flowing into the bearing cavity is diverted to the front bearing by setting a diverter groove to avoid insufficient lubricating oil in the front bearing. However, due to the inclination of the main shaft, the lubricating oil flowing into the bearing cavity will also tilt toward the rear bearing. Even if it is diverted to the front bearing, there will be a problem of unbalanced lubrication of the front and rear bearings, and the more lubricating oil in the bearing cavity, the more obvious this difference will be. Summary of the invention

[0003] The invention provides an oil slinger and a bearing unit using the same, so as to solve the problem of uneven distribution of lubricating oil of the oil slinger of the existing bearing unit.

[0004] An oil slinger ring and a bearing unit using the same of the present invention adopt the following technical solutions:

[0005] The cam is an oil-slinging ring according to claim 1, wherein the first and second retaining rings are coaxial and fixedly connected to each other; the cam is located between the first and second retaining rings, and the first retaining ring is lower than the second retaining ring in the horizontal direction; the outer diameters of the first and second retaining rings are greater than the outer diameter of the cam, and the side surfaces of the first and second retaining rings and the outer circumferential surface of the cam define an oil storage tank; the first retaining ring is provided with a first flow channel, the first flow channel connects the oil storage tank and the outer circumferential surface of the first retaining ring; the second retaining ring is provided with a second flow channel, the second flow channel connects the oil storage tank and the outer circumferential surface of the second retaining ring; a drainage ring is provided on one side of the first retaining ring close to the cam, the drainage ring is coaxial with the cam, and a plurality of wedge blocks are provided on the outer circumference of the drainage ring, the end faces of the wedge blocks are inclined, and along the rotation direction of the cam, the end faces of the wedge blocks extend from front to back in a direction away from the axis of the cam, and the front side of the end face of the wedge blocks is adjacent to the drainage ring and an outer circumferential surface of the oil reservoir. The third flow channel is provided in the guide ring, the center ring and the second retaining ring, and the two ends of the third flow channel are respectively an oil inlet end and an oil outlet end, the oil inlet end of the third flow channel is connected to the end face of the wedge block, the oil outlet end of the third flow channel is connected to the side of the second retaining ring away from the center ring, and the distance between the oil outlet end of the third flow channel and the axis of the center ring is greater than the distance between the oil inlet end and the axis of the center ring; when the liquid level in the oil storage tank is higher than the height at which the oil inlet end of the third flow channel is located, the lubricating oil in the oil storage tank flows to the side of the second retaining ring away from the center ring through the third flow channel; a fourth flow channel is also provided in the first retaining ring, one end of the fourth flow channel is connected to the outer circumferential surface of the first retaining ring, and the other end passes through the side of the first retaining ring and is connected to the outer side of the circumference of the guide ring; the number of the third flow channels is greater than the number of the fourth flow channels; the outer circumference at which one end of the fourth flow channel connected to the outer side of the circumference of the guide ring is located is coaxial with the outer circumference at which the oil inlet end of the third flow channel is located.

[0006] Furthermore, there are multiple guide rings, and the multiple guide rings are stacked and coaxially installed, and along the direction from the first baffle ring to the center ring, the outer diameters of the multiple guide rings decrease successively, and the outer circumferential diameters of the wedge blocks on the multiple guide rings decrease successively; the third flow channels passing through different guide rings are not connected to each other; part of the fourth flow channel passes through the first baffle ring and is connected to the outer side of the guide ring that is attached to the first baffle ring, and part of the fourth flow channel passes through the first baffle ring and the guide ring and is connected to the outer side of the guide ring that is not attached to the first baffle ring; the number of third flow channels corresponding to each guide ring is greater than the number of fourth flow channels, and the third flow channel and the fourth flow channel corresponding to one end of the same guide ring are located on the same circumference.

[0007] Furthermore, one end of the first flow channel and the second flow channel are connected to the bottom of the oil storage tank, and the first flow channel and the second flow channel are both straight channels; an oil retaining ring is arranged on the outer circumference of the center ring, and there are two oil retaining rings, both of which are fixed on the center ring, and the two oil retaining rings are respectively fitted with the drainage ring and the second retaining ring, and the two oil retaining rings are respectively provided with notches connecting the oil storage tank and the first flow channel and the second flow channel.

[0008] Furthermore, the third flow channel passes through the center ring and then passes through the second retaining ring in a direction away from the axis of the center ring.

[0009] A bearing unit comprises a bearing outer ring, a front bearing inner ring and a rear bearing inner ring. The front bearing inner ring and the rear bearing inner ring are both installed in the bearing outer ring and define a conical front raceway and a rear raceway with the bearing outer ring respectively. The end of the front bearing inner ring close to the rear bearing inner ring is installed with the above-mentioned oil slinger ring. The first flow channel of the oil slinger ring is correspondingly connected to the rear raceway, and the second flow channel of the oil slinger ring is correspondingly connected to the front raceway. The outer circumference of the bearing outer ring is provided with an oil inlet hole connected to an oil storage tank.

[0010] Furthermore, a plurality of protrusions are arranged on the inner circumferential surface of the bearing outer ring, the protrusions correspond to the wedges on the outer circumference of the drainage ring, and a gap is reserved between the protrusions and the wedges; when the wedges rotate with the drainage ring, the lubricating oil between the wedges and the protrusions is squeezed into the third flow channel.

[0011] Furthermore, balls and retaining racks are installed in the front raceway and the rear raceway.

[0012] The beneficial effect of the present invention is that when the lubricating oil in the oil storage tank of the oil slinger ring of the present invention accumulates a lot, the lubricating oil in the oil storage tank is diverted to the second retaining ring through the third flow channel, and the lubricating oil in the oil storage tank is diverted to the first retaining ring through the fourth flow channel, so as to accelerate the discharge of the lubricating oil in the oil storage tank. When the center ring is installed at an angle and the first retaining ring is lower than the second retaining ring, the lubricating oil in the oil storage tank will gather to the first retaining ring, resulting in a reduction in the amount of lubricating oil flowing to the second retaining ring. By making the number of the third flow channels greater than the fourth flow channels, the amount of lubricating oil flowing to the first retaining ring and the second retaining ring is as balanced as possible.

[0013] Furthermore, the inner circumferential surface of the bearing outer ring of the bearing unit of the present invention is provided with a plurality of protrusions. When the wedge block rotates with the drainage ring, the end surface of the wedge block squeezes the lubricating oil between the wedge block and the protrusion into the third flow channel, further accelerating the flow of the lubricating oil from the third flow channel to the side of the second stopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a structural schematic diagram of an embodiment of an oil slinger ring of the present invention;

[0016] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;

[0017] Figure 3 A schematic cross-sectional view of a second flow channel and a third flow channel in an embodiment of an oil slinger ring of the present invention;

[0018] Figure 4 It is a cross-sectional schematic diagram of a first flow channel and a fourth flow channel in an embodiment of an oil slinger ring of the present invention;

[0019] Figure 5 It is a cross-sectional schematic diagram of a third flow channel corresponding to another guide ring in an embodiment of an oil slinger ring of the present invention;

[0020] Figure 6 It is an exploded schematic diagram of the overall structure of an oil slinger embodiment of the present invention;

[0021] Figure 7 This is a schematic diagram of the structure of a drainage ring in an embodiment of an oil slinger ring of the present invention;

[0022] Figure 8 is a cross-sectional schematic diagram of an embodiment of a bearing unit of the present invention;

[0023] In the figure: 100, center ring; 110, oil storage tank; 120, oil retaining ring; 121, notch; 200, first retaining ring; 210, first flow channel; 300, second retaining ring; 310, second flow channel; 400, drainage ring; 410, wedge block; 420, third flow channel; 430, fourth flow channel; 500, bearing outer ring; 510, oil inlet hole; 520, bump; 600, front bearing inner ring; 610, front raceway; 620, ball; 630, retaining cage; 700, rear bearing inner ring; 710, rear raceway. Implementation

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] An embodiment of an oil slinger ring of the present invention is as follows Figures 1 to 7 As shown, it includes a center ring 100, a first baffle ring 200 and a second baffle ring 300, and the center ring 100, the first baffle ring 200 and the second baffle ring 300 are coaxial and fixedly connected; the center ring 100 is located between the first baffle ring 200 and the second baffle ring 300, and the first baffle ring 200 is lower than the second baffle ring 300 in the horizontal direction, that is, when the center ring 100 is installed, if its axis is in an inclined state, the first baffle ring 200 is located on the lower side of the axis of the center ring 100.

[0026] The outer diameters of the first baffle ring 200 and the second baffle ring 300 are greater than the outer diameter of the center ring 100, and the side surfaces of the first baffle ring 200 and the second baffle ring 300 and the outer circumferential surface of the center ring 100 define an oil storage tank 110; the first baffle ring 200 is provided with a first flow channel 210, and the first flow channel 210 connects the oil storage tank 110 and the outer circumferential surface of the first baffle ring 200; the second baffle ring 300 is provided with a second flow channel 310, and the second flow channel 310 connects the oil storage tank 110 and the outer circumferential surface of the second baffle ring 300.

[0027] A drainage ring 400 is arranged on one side of the first retaining ring 200 close to the center ring 100. The drainage ring 400 is coaxial with the center ring 100 and fixedly connected. A plurality of wedge blocks 410 are arranged on the outer circumference of the drainage ring 400. The end face of the wedge block 410 is an inclined surface, and along the rotation direction of the center ring 100, the end face of the wedge block 410 extends from front to back away from the axis of the center ring 100, and the front side of the end face of the wedge block 410 is connected with the outer circumferential surface of the drainage ring 400. When the drainage ring 400 rotates with the center ring 100, the lubricating oil on the outer circumference of the drainage ring 400 flows along the end face of the wedge block 410 away from the axis of the drainage ring 400. A third flow channel 420 is provided in the guide ring 400, the center ring 100 and the second baffle ring 300, and the two ends of the third flow channel 420 are an oil inlet end and an oil outlet end respectively. The oil inlet end of the third flow channel 420 is connected to the end face of the wedge block 410, and the oil outlet end of the third flow channel 420 is connected to the side of the second baffle ring 300 away from the center ring 100, and the distance between the oil outlet end of the third flow channel 420 and the axis of the center ring 100 is greater than the distance between the oil inlet end and the axis of the center ring 100; when the liquid level in the oil storage tank 110 is higher than the height of the oil inlet end of the third flow channel 420, the lubricating oil in the oil storage tank 110 flows to the side of the second baffle ring 300 away from the center ring 100 through the third flow channel 420. A fourth flow channel 430 is also provided in the first retaining ring 200, one end of the fourth flow channel 430 is connected to the outer circumferential surface of the first retaining ring 200, and the other end passes through the side of the first retaining ring 200 and is connected to the outer circumference of the guide ring 400; and the number of the third flow channels 420 is greater than the number of the fourth flow channels 430; the outer circumference of the end of the fourth flow channel 430 connected to the outer circumference of the guide ring 400 is coaxial with the outer circumference of the oil inlet end of the third flow channel 420. When a large amount of lubricating oil accumulates in the oil storage tank 110, the lubricating oil in the oil storage tank 110 is diverted to the side of the second retaining ring 300 through the third flow channel 420, and the lubricating oil in the oil storage tank 110 is diverted to the side of the first retaining ring 200 through the fourth flow channel 430, so as to accelerate the discharge of the lubricating oil in the oil storage tank 110. When the center ring 100 is installed at an angle and the first baffle ring 200 is lower than the second baffle ring 300, the lubricating oil in the oil storage tank 110 will gather to the side of the first baffle ring 200, resulting in a reduction in the amount of lubricating oil flowing to the side of the second baffle ring 300. By making the number of third flow channels 420 greater than the number of fourth flow channels 430, the amount of lubricating oil flowing to the first baffle ring 200 and the second baffle ring 300 can be as balanced as possible.

[0028] In some other embodiments of the present invention, there are multiple guide rings 400, and the multiple guide rings 400 are stacked and coaxially installed, and along the direction from the first baffle ring 200 to the center ring 100, the outer diameters of the multiple guide rings 400 decrease successively, and the outer circumferential diameters of the wedge blocks 410 on the multiple guide rings 400 decrease successively; the third flow channels 420 passing through different guide rings 400 are not connected to each other; part of the fourth flow channel 430 passes through the first baffle ring 200 and is connected to the outer side of the guide ring 400 attached to the first baffle ring 200, and part of the fourth flow channel 430 passes through the first baffle ring 200 and the guide ring 400 and is connected to the outer side of the guide ring 400 not attached to the first baffle ring 200; the number of third flow channels 420 corresponding to each guide ring 400 is greater than the number of corresponding fourth flow channels 430, and the third flow channel 420 and the fourth flow channel 430 corresponding to one end of the same guide ring 400 are located on the same circumference. By providing a plurality of guide rings 400 , when the liquid level in the oil storage tank 110 rises to different heights, it can be diverted through the third flow channel 420 and the fourth flow channel 430 corresponding to different guide rings 400 , thereby further accelerating the discharge of the lubricating oil in the oil storage tank 110 .

[0029] The drainage ring 400 can be integrally formed, and a blind groove can be machined on its side. When installed, the side of the drainage ring 400 with the blind groove can be fitted with the first retaining ring 200 or another drainage ring 400, thereby defining the portion of the third flow channel 420 inside the drainage ring 400. Alternatively, a drainage ring 400 can be obtained by stacking multiple sheets. Specifically, multiple sheets are respectively perforated, and a through groove is machined on one of the sheets. After the multiple sheets are stacked, the portion of the third flow channel 420 inside the drainage ring 400 can be defined. Figure 7 shown.

[0030] In this embodiment, one end of the first flow channel 210 and the second flow channel 310 are both connected to the bottom of the oil storage tank 110, and the first flow channel 210 and the second flow channel 310 are both straight channels to accelerate the discharge of the lubricating oil in the oil storage tank 110 from the first flow channel 210 and the second flow channel 310 under the centrifugal effect of the rotation of the center ring 100. The outer circumference of the center ring 100 is provided with an oil deflector ring 120, and there are two oil deflector rings 120, both of which are fixedly sleeved on the center ring 100. The two oil deflector rings 120 are respectively fitted with the drainage ring 400 and the second deflector ring 300, and the sides of the two oil deflector rings 120 are respectively provided with notches 121 connecting the oil storage tank 110 and the first flow channel 210 and the second flow channel 310.

[0031] In this embodiment, the portion of the third flow channel 420 located in the second retaining ring 300 is a straight channel, and the third flow channel 420 passes through the center ring 100 and then passes out of the second retaining ring 300 in a direction away from the axis of the center ring 100. In order to reduce the difficulty of processing the third flow channel 420 in the second retaining ring 300, the second retaining ring 300 adopts a split design including a main part and an additional part. Both the main part and the additional part are annular parts coaxial with the center ring 100, and the thickness of the additional part is smaller than that of the main part. The structure of the third flow channel 420 in the main part is a straight hole perpendicular to the end face of the main part, and the structure of the third flow channel 420 in the additional part is an inclined hole inclined to the end face of the main part, as shown in FIG. Figure 6 When the thickness of the second retaining ring 300 is relatively small, the second retaining ring 300 can be integrally formed, and an oblique hole can be directly punched into the second retaining ring 300 as the portion through which the third flow channel 420 flows through the second retaining ring 300 .

[0032] An embodiment of a bearing unit of the present invention is as follows Figure 8 As shown, the bearing outer ring 500, the front bearing inner ring 600 and the rear bearing inner ring 700 are both installed in the bearing outer ring 500, and define a conical front raceway 610 and a rear raceway 710 with the bearing outer ring 500 respectively. The end of the front bearing inner ring 600 close to the rear bearing inner ring 700 is installed with the oil slinger in the above embodiment, the first flow channel 210 of the oil slinger is correspondingly connected to the rear raceway 710, the second flow channel 310 of the oil slinger is correspondingly connected to the front raceway 610, and the outer circumference of the bearing outer ring 500 is provided with an oil inlet hole 510 connected to the oil storage tank 110. When the bearing unit is installed, the front bearing inner ring 600 is installed on the higher side of the inclined main shaft, and drives the oil slinger to rotate synchronously when the main shaft rotates.

[0033] In this embodiment, the inner circumferential surface of the bearing outer ring 500 is provided with a plurality of protrusions 520, which are distributed at intervals along the circumference of the bearing outer ring 500 and correspond one-to-one with the wedges 410 on the outer circumference of the drainage ring 400, and a gap is reserved between the protrusions 520 and the wedges 410; when the wedges 410 rotate with the drainage ring 400, the end surface of the wedges 410 squeezes the lubricating oil between the wedges 410 and the protrusions 520 into the third flow channel 420. When there are multiple drainage rings 400, there are multiple layers of protrusions 520.

[0034] In this embodiment, balls 620 and retaining frames 630 are installed in both the front raceway 610 and the rear raceway 710 .

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An oil slinger, characterized in that: It includes a center ring, a first retaining ring and a second retaining ring, which are coaxial and fixedly connected; the center ring is located between the first retaining ring and the second retaining ring, and the first retaining ring is lower than the second retaining ring in the horizontal direction; The outer diameters of the first retaining ring and the second retaining ring are greater than the outer diameter of the center ring, and the side surfaces of the first retaining ring and the second retaining ring and the outer circumferential surface of the center ring define an oil storage groove; the first retaining ring is provided with a first flow channel, the first flow channel connects the oil storage groove and the outer circumferential surface of the first retaining ring; the second retaining ring is provided with a second flow channel, the second flow channel connects the oil storage groove and the outer circumferential surface of the second retaining ring; A drainage ring is arranged on one side of the first retaining ring close to the center ring. The drainage ring is coaxial with the center ring, and a plurality of wedges are arranged on the outer circumference of the drainage ring. The end faces of the wedges are inclined surfaces, and along the rotation direction of the center ring, the end faces of the wedges extend from front to back in the direction away from the axis of the center ring, and the front side of the end faces of the wedges is connected with the outer circumferential surface of the drainage ring; a third flow channel is arranged in the drainage ring, the center ring and the second retaining ring, and the two ends of the third flow channel are respectively an oil inlet end and an oil outlet end, the oil inlet end of the third flow channel is connected with the end face of the wedge, and the oil outlet end of the third flow channel is connected with the side of the second retaining ring away from the center ring, and the oil outlet of the third flow channel is connected with the oil outlet of the third flow channel. The distance between the end and the axis of the center ring is greater than the distance between the oil inlet end and the axis of the center ring; when the liquid level in the oil storage tank is higher than the height of the oil inlet end of the third flow channel, the lubricating oil in the oil storage tank flows to the side of the second retaining ring away from the center ring through the third flow channel; a fourth flow channel is also provided in the first retaining ring, one end of the fourth flow channel is connected to the outer circumferential surface of the first retaining ring, and the other end passes through the side of the first retaining ring and is connected to the outer circumference of the guide ring; the number of the third flow channels is greater than the number of the fourth flow channels; the outer circumference where one end of the fourth flow channel connected to the outer circumference of the guide ring is located is coaxial with the outer circumference where the oil inlet end of the third flow channel is located; There are multiple guide rings, which are stacked and coaxially installed, and along the direction from the first baffle ring to the center ring, the outer diameters of the multiple guide rings decrease successively, and the outer circumferential diameters of the wedge blocks on the multiple guide rings decrease successively; the third flow channels passing through different guide rings are not connected to each other, part of the fourth flow channels pass through the first baffle ring and are connected to the outer side of the guide ring that is attached to the first baffle ring, and part of the fourth flow channels pass through the first baffle ring and the guide ring and are connected to the outer side of the guide ring that is not attached to the first baffle ring; the number of third flow channels corresponding to each guide ring is greater than the number of fourth flow channels, and one end of the third flow channel and the fourth flow channel corresponding to the same guide ring is located on the same circumference.

2. The oil slinger according to claim 1, characterized in that: One end of the first flow channel and the second flow channel are both connected to the bottom of the oil storage tank, and the first flow channel and the second flow channel are both straight channels; an oil retaining ring is arranged on the outer circumference of the center ring, and there are two oil retaining rings, both of which are fixed on the center ring, and the two oil retaining rings are respectively fitted with the drainage ring and the second retaining ring, and the two oil retaining rings are respectively provided with notches connecting the oil storage tank and the first flow channel and the second flow channel.

3. The oil slinger according to claim 1, characterized in that: The third flow channel passes through the center ring and then goes out from the second retaining ring in a direction away from the axis of the center ring.

4. A bearing unit, comprising a bearing outer ring, a front bearing inner ring and a rear bearing inner ring, wherein the front bearing inner ring and the rear bearing inner ring are both mounted in the bearing outer ring and define a conical front raceway and a conical rear raceway with the bearing outer ring, respectively, wherein: The end of the front bearing inner ring close to the rear bearing inner ring is installed with the oil slinger described in any one of claims 1 to 3, the first flow channel of the oil slinger is connected to the rear raceway correspondingly, the second flow channel of the oil slinger is connected to the front raceway correspondingly, and the outer circumference of the bearing outer ring is provided with an oil inlet hole connected to the oil storage tank.

5. A bearing unit according to claim 4, characterized in that: The inner circumferential surface of the bearing outer ring is provided with a plurality of protrusions, which correspond to the wedges on the outer circumference of the drainage ring, and a gap is reserved between the protrusions and the wedges; when the wedges rotate with the drainage ring, the lubricating oil between the wedges and the protrusions is squeezed into the third flow channel.

6. A bearing unit according to claim 4, characterized in that: Balls and cages are installed in the front and rear raceways.

Images