CN215214666U - Lubricating structure for bevel gear bearing - Google Patents
Lubricating structure for bevel gear bearing Download PDFInfo
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- CN215214666U CN215214666U CN202120707536.2U CN202120707536U CN215214666U CN 215214666 U CN215214666 U CN 215214666U CN 202120707536 U CN202120707536 U CN 202120707536U CN 215214666 U CN215214666 U CN 215214666U
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Abstract
The utility model relates to a bearing lubrication structure discloses a lubrication structure for bevel gear bearing, including the bevel gear axle, install the bearing on the bevel gear axle, the bearing includes the bearing inner race, front bearing inner circle and back bearing inner circle, form preceding raceway between bearing inner race and the front bearing inner circle, form the back raceway between bearing inner race and the back bearing inner circle, install the oil slinger on the bevel gear axle, the oil slinger is established between front bearing inner circle and back bearing inner circle, the inside oil trap that is equipped with the burden suction hole and communicates with the burden suction hole of bevel gear axle, it is a plurality of oil transportation hole to be equipped with quantity on the circumference lateral wall of oil trap, be equipped with all with the preceding pump oilhole and the back pump oilhole of oil transportation hole intercommunication on the oil slinger, preceding pump oilhole is towards the raceway, back pump oilhole is towards the back raceway. Lubricating oil in the gear box is led into the bearing cavity through the negative suction hole to realize lubrication, so that a bearing outer ring and a shell runner are simplified, and the problem of poor lubrication caused by the fact that the front bearing is at a high position is solved.
Description
Technical Field
The utility model relates to a bearing lubrication structure especially relates to a lubrication structure for bevel gear bearing.
Background
The main bevel gear bearing of the main speed reducer adopts splash lubrication, namely, a gear box is used as an oil tank, an oil collecting tank, an oil inlet hole and an oil return hole are arranged on a shell of the speed reducer, lubricating oil is thrown into a bearing cavity through an oil duct for lubrication through the rotation of a main bevel gear, and the lubricating oil flows from a small end to a large end under the action of pump oil generated when a tapered roller rotates and flows back to the gear box through the oil return hole, so that the lubrication of the bearing and the circulation of the lubricating oil are realized.
However, the front bearing of the main bevel gear is far away from the oil surface and the gear, and is separated by the rear bearing, so that the lubricating condition is poor; and because the main reducer shaft has an inclination angle of 5-7 degrees, the front bearing is at a high position, the lubricating condition is worse, the abrasion of the bearing is easily caused, and the running stability of the vehicle is influenced. Such as the automotive main reduction differential bearing unit of application No. 202021762935.0.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the poor shortcoming of bevel gear bearing lubrication effect among the prior art, provide a lubricating structure for bevel gear bearing.
In order to solve the technical problem, the utility model discloses a following technical scheme can solve:
the utility model provides a lubricating structure for bevel gear bearing, including the bevel gear axle, install the bearing on the bevel gear axle, the bearing includes the bearing inner race, front bearing inner circle and back bearing inner circle, form preceding raceway between bearing inner race and the front bearing inner circle, form the back raceway between bearing inner race and the back bearing inner circle, install the oil slinger on the bevel gear axle, the oil slinger is established between front bearing inner circle and back bearing inner circle, bevel gear axle inside is equipped with the burden suction hole and the oil trap with burden suction hole intercommunication, be equipped with quantity on the circumference lateral wall of oil trap and be a plurality of oil delivery hole, be equipped with the preceding pump oilhole and the back pump oilhole that all communicate with the oil delivery hole on the oil slinger, preceding pump oilhole is towards the front raceway, the back pump oilhole is towards the back raceway. Under the effect of centrifugal force, the epaxial negative pressure chamber that forms of bevel gear to make the lubricated in the bearing is inhaled through the negative suction hole that fluid can be continuous. This structure has increased the oil slinger with the negative suction hole intercommunication, and fluid can be through the oil slinger pump sending to preceding raceway and back raceway.
Preferably, the outer circumferential surface of the bevel gear shaft is provided with a pressure equalizing groove which is an annular groove, all the oil conveying holes are communicated with the pressure equalizing groove, and all the front pump oil holes and the rear pump oil holes are communicated with the pressure equalizing groove. The pressure equalizing groove is used for equalizing oil pressure, and the oil liquid amount output by the front pump oil hole and the rear pump oil hole is basically the same as the pumping distance.
Preferably, the front pump oil hole and the rear pump oil hole form an oil slinger unit hole, and a plurality of oil slinger unit holes are uniformly distributed on the oil slinger. The oil throwing units can continuously and stably lubricate the front roller path and the rear roller path.
Preferably, the front pump oil hole and the rear pump oil hole are inclined holes, the number of the oil slingers equal to the number of the oil slinger unit holes are arranged on the inner circumferential side wall of the oil slinger, all the oil slingers are communicated with the pressure equalizing groove, and the inner ends of the front pump oil hole and the rear pump oil hole in the same oil slinger unit hole are communicated with the oil slingers. The oil throwing holes are equivalent to the distribution holes, and oil in the pressure equalizing grooves can be uniformly distributed to the front pump oil holes and the rear pump oil holes through the oil throwing holes.
Preferably, the negative suction hole extends inwards along the central axis of the bevel gear shaft, the central axis of the negative suction hole is collinear with the central axis of the oil collecting tank, and the aperture of the negative suction hole is smaller than that of the oil collecting tank.
Preferably, a stepped hole is further formed in the bevel gear shaft, the stepped hole is formed between the negative suction hole and the oil collecting tank and communicated with the negative suction hole and the oil collecting tank, the central axis of the stepped hole is collinear with the central axis of the negative suction hole, the aperture of the stepped hole is larger than that of the negative suction hole, and the aperture of the stepped hole is smaller than that of the oil collecting tank.
Preferably, the diameter of the front pump oil hole is 0.5mm to 1mm, which is the same as the diameter of the rear pump oil hole.
Preferably, the diameter of the oil slinger hole is 0.5mm to 5 mm.
Preferably, the bearing further comprises a retainer and a plurality of balls, all the balls are arranged on the retainer, and the retainers with the balls are arranged in the front raceway and the rear raceway.
The utility model discloses owing to adopted above technical scheme, have apparent technological effect:
lubricating oil in the gear box is introduced into the bearing cavity through the negative suction hole through the negative suction gear shaft to realize lubrication, so that a bearing outer ring and a shell runner are simplified, and the problem of poor lubrication caused by the fact that a front bearing is at a high position is avoided;
the front pump oil hole and the rear pump oil hole of the oil slinger pump lubricating oil introduced through the pressure equalizing groove to the bearing under the action of centrifugal force, thereby effectively avoiding the wearing of the front bearing by the oil lacking and realizing the lubrication of the front bearing.
Drawings
Fig. 1 is a schematic sectional structure diagram of the present invention.
Fig. 2 is a schematic structural view of the oil slinger in fig. 1.
Fig. 3 is a schematic sectional view of the oil slinger.
Fig. 4 is a schematic structural view of the bevel gear shaft of fig. 1.
Fig. 5 is a sectional structural view of the bevel gear shaft.
The names of the parts indicated by the numerical references in the above figures are as follows:
10-bevel gear shaft
101-negative suction hole, 102-oil collecting groove, 103-oil conveying hole, 104-pressure equalizing groove, 105-stepped hole
11-bearing outer ring
12-front bearing inner ring
13-oil slinger
131-front pump oil hole, 132-rear pump oil hole, 133-oil slinger oil hole
14-rear bearing inner ring
15-holder
16-ball
100-forward rolling way
200-rear raceway
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings 1-5 and examples.
Example 1
A lubricating structure for a bevel gear bearing comprises a bevel gear shaft 10, wherein a bearing is mounted on the bevel gear shaft 10 and comprises a bearing outer ring 11, a front bearing inner ring 12 and a rear bearing inner ring 14, the bearing comprises a front bearing and a rear bearing, the front bearing and the rear bearing are used for the bearing outer ring 11, a front raceway 100 is formed between the bearing outer ring 11 and the front bearing inner ring 12, and the front raceway 100 is an annular conical raceway. A rear raceway 200 is formed between the bearing outer ring 11 and the rear bearing inner ring 14, and the rear raceway 200 is also a ring-cone raceway. The bevel gear shaft 10 is provided with an oil slinger 13, the oil slinger 13 is arranged between the front bearing inner ring 12 and the rear bearing inner ring 14, two sides of the oil slinger 13 are respectively in contact connection with the front bearing inner ring 12 and the rear bearing inner ring 14, the diameter of the outer circumference of the oil slinger 13 is equal to the diameter of the outer circumference of the inner end of the front bearing inner ring 12, and the diameter of the outer circumference of the inner end of the rear bearing inner ring 14 is also equal to the diameter of the outer circumference of the inner end of the front bearing inner ring 12. The bevel gear shaft 10 is internally provided with a negative suction hole 101 and an oil collecting tank 102 communicated with the negative suction hole 101, the circumferential side wall of the oil collecting tank 102 is provided with a plurality of oil conveying holes 103, the oil slinger 13 is provided with a front oil pumping hole 131 and a rear oil pumping hole 132 which are communicated with the oil conveying holes 103, the front oil pumping hole 131 faces the front roller path 100, and the rear oil pumping hole 132 faces the rear roller path 200. Lubricating oil in the gear box is led into the bearing cavity through the bevel gear shaft 10 through the negative suction hole 101 to realize lubrication, so that the bearing outer ring 11 and a shell runner are simplified, and the problem of poor lubrication caused by the fact that a front bearing is at a high position is solved. Lubricating oil enters the bevel gear shaft 10 through the negative suction hole 101, enters the oil slinger 13 through the oil collecting groove 102 and the oil conveying hole 103, and forms a negative pressure cavity in the bevel gear shaft 10 under the action of centrifugal force, so that the continuous suction of the oil can be ensured for circulation. The lubricating oil that enters the slinger 13 is lubricated by centrifugal force toward the rear bearing through the rear pump oil hole 132 and toward the front bearing through the front pump oil hole 131. The lubricating of the bearing is realized through the bevel gear shaft 10 and the oil slinger 13 under the centrifugal force and the pumping action of the hole.
The outer circumference of the bevel gear shaft 10 is provided with a pressure equalizing groove 104, the pressure equalizing groove 104 is an annular groove, all the oil transmission holes 103 are communicated with the pressure equalizing groove 104, all the front pump oil holes 131 and the rear pump oil holes 132 are communicated with the pressure equalizing groove 104, and the oil passes through the oil transmission holes 103, then passes through the pressure equalizing groove 104, and finally is transmitted into the oil collecting groove 102.
The front pump oil hole 131 and the rear pump oil hole 132 form an oil slinger unit hole, and the oil slinger 13 is uniformly provided with a plurality of oil slinger unit holes, wherein the number of the oil slinger unit holes is 12.
The front pump oil hole 131 and the rear pump oil hole 132 are both inclined holes, the oil slinger 13 is provided with oil slinger holes 133 with the number equal to that of oil slinger unit holes on the inner circumferential side wall, all the oil slinger holes 133 are communicated with the pressure equalizing groove 104, the inner ends of the front pump oil hole 131 and the rear pump oil hole 132 on the same oil slinger unit hole are communicated with the oil slinger holes 133, oil is redistributed to the front pump oil hole 131 and the rear pump oil hole 132 through the oil slinger holes 133, and the pumping capacity of oil of the front bearing and the rear bearing is basically equal.
The negative suction hole 101 extends inwards along the central axis of the bevel gear shaft 10, the central axis of the negative suction hole 101 is collinear with the central axis of the oil collecting tank 102, and the aperture of the negative suction hole 101 is smaller than that of the oil collecting tank 102.
The bevel gear shaft 10 is further internally provided with a stepped hole 105, the stepped hole 105 is arranged between the negative suction hole 101 and the oil collecting tank 102 and communicated with the negative suction hole 101 and the oil collecting tank 102, the central axis of the stepped hole 105 is collinear with the central axis of the negative suction hole 101, the aperture of the stepped hole 105 is larger than that of the negative suction hole 101, and the aperture of the stepped hole 105 is smaller than that of the oil collecting tank 102.
The diameter of the front pump oil hole 131 is 0.5mm as the diameter of the rear pump oil hole 132.
The diameter of the oil slinger hole 133 is 0.5 mm.
The bearing further comprises a retainer 15 and a plurality of balls 16, wherein all the balls 16 are arranged on the retainer 15, and the retainers with the balls 16 are arranged in the front roller path 100 and the rear roller path 200.
Example 2
Embodiment 2 has substantially the same characteristics as embodiment 1 except that the front pump oil hole 131 and the rear pump oil hole 132 have the same diameter of 0.75 mm. The diameter of the oil slinger hole 133 is 2.75 mm.
Example 3
Embodiment 3 has substantially the same characteristics as embodiment 1 except that the diameter of the front pump oil hole 131 is 1mm as that of the rear pump oil hole 132. The diameter of the oil slinger hole 133 is 5 mm.
Claims (9)
1. The utility model provides a lubricating structure for bevel gear bearing, includes bevel gear axle (10), installs the bearing on bevel gear axle (10), and the bearing includes bearing inner race (11), preceding bearing inner race (12) and back bearing inner race (14), forms preceding raceway (100) between bearing inner race (11) and preceding bearing inner race (12), forms back raceway (200), its characterized in that between bearing inner race (14) and the back bearing outer race (11): the oil slinger is characterized in that an oil slinger (13) is mounted on a bevel gear shaft (10), the oil slinger (13) is arranged between a front bearing inner ring (12) and a rear bearing inner ring (14), a negative suction hole (101) and an oil collecting tank (102) communicated with the negative suction hole (101) are arranged inside the bevel gear shaft (10), a plurality of oil conveying holes (103) are formed in the circumferential side wall of the oil collecting tank (102), a front pump oil hole (131) and a rear pump oil hole (132) which are communicated with the oil conveying holes (103) are formed in the oil slinger (13), the front pump oil hole (131) faces towards a front raceway (100), and the rear pump oil hole (132) faces towards a rear raceway (200).
2. A lubrication structure for a bevel gear bearing according to claim 1, wherein: the outer circumferential surface of the bevel gear shaft (10) is provided with a pressure equalizing groove (104), the pressure equalizing groove (104) is an annular groove, all oil conveying holes (103) are communicated with the pressure equalizing groove (104), and all front pump oil holes (131) and rear pump oil holes (132) are communicated with the pressure equalizing groove (104).
3. A lubricating structure for a bevel gear bearing according to claim 2, characterized in that: the front pump oil hole (131) and the rear pump oil hole (132) form an oil slinger unit hole, and a plurality of oil slinger unit holes are uniformly distributed on the oil slinger (13).
4. A lubrication structure for a bevel gear bearing according to claim 3, wherein: the front pump oil hole (131) and the rear pump oil hole (132) are inclined holes, the oil slinger (13) is provided with oil slinger holes (133) with the number equal to that of the oil slinger unit holes on the inner circumferential side wall, all the oil slinger holes (133) are communicated with the pressure equalizing groove (104), and the inner ends of the front pump oil hole (131) and the rear pump oil hole (132) on the same oil slinger unit hole are communicated with the oil slinger holes (133).
5. A lubrication structure for a bevel gear bearing according to claim 1, wherein: the negative suction hole (101) extends inwards along the central axis of the bevel gear shaft (10), the central axis of the negative suction hole (101) is collinear with the central axis of the oil collecting tank (102), and the aperture of the negative suction hole (101) is smaller than that of the oil collecting tank (102).
6. A lubrication structure for a bevel gear bearing according to claim 1, wherein: the bevel gear shaft (10) is internally provided with a stepped hole (105), the stepped hole (105) is arranged between the negative suction hole (101) and the oil collecting tank (102) and is communicated with the negative suction hole and the oil collecting tank, the central axis of the stepped hole (105) is collinear with the central axis of the negative suction hole (101), the aperture of the stepped hole (105) is larger than that of the negative suction hole (101), and the aperture of the stepped hole (105) is smaller than that of the oil collecting tank (102).
7. A lubrication structure for a bevel gear bearing according to claim 1, wherein: the aperture of the front pump oil hole (131) is 0.5 mm-1 mm as the same as that of the rear pump oil hole (132).
8. A lubrication structure for a bevel gear bearing according to claim 1, wherein: the aperture of the oil throwing hole (133) is 0.5 mm-5 mm.
9. A lubrication structure for a bevel gear bearing according to claim 1, wherein: the bearing also comprises a retainer (15) and a plurality of balls (16), all the balls (16) are arranged on the retainer (15), and the retainers with the balls (16) are arranged in the front raceway (100) and the rear raceway (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120707536.2U CN215214666U (en) | 2021-04-07 | 2021-04-07 | Lubricating structure for bevel gear bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120707536.2U CN215214666U (en) | 2021-04-07 | 2021-04-07 | Lubricating structure for bevel gear bearing |
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| CN215214666U true CN215214666U (en) | 2021-12-17 |
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| CN202120707536.2U Active CN215214666U (en) | 2021-04-07 | 2021-04-07 | Lubricating structure for bevel gear bearing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187882A (en) * | 2021-04-07 | 2021-07-30 | 浙江兆丰机电股份有限公司 | Lubricating structure for bevel gear bearing |
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2021
- 2021-04-07 CN CN202120707536.2U patent/CN215214666U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187882A (en) * | 2021-04-07 | 2021-07-30 | 浙江兆丰机电股份有限公司 | Lubricating structure for bevel gear bearing |
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