CN116816906A - Bearing lubricating structure - Google Patents
Bearing lubricating structure Download PDFInfo
- Publication number
- CN116816906A CN116816906A CN202311096081.5A CN202311096081A CN116816906A CN 116816906 A CN116816906 A CN 116816906A CN 202311096081 A CN202311096081 A CN 202311096081A CN 116816906 A CN116816906 A CN 116816906A
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- Prior art keywords
- gears
- oil
- open
- pore
- gear
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- 230000001050 lubricating effect Effects 0.000 title description 11
- 239000003921 oil Substances 0.000 claims abstract description 97
- 230000005540 biological transmission Effects 0.000 claims abstract description 55
- 239000010687 lubricating oil Substances 0.000 claims abstract description 45
- 239000011148 porous material Substances 0.000 claims abstract description 30
- 238000005461 lubrication Methods 0.000 claims abstract description 27
- 230000004323 axial length Effects 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- General Details Of Gearings (AREA)
Abstract
The invention relates to a bearing lubrication structure. The invention comprises a box body; the multistage transmission assembly is rotationally connected to the box body and comprises a plurality of transmission shafts and transmission gears connected to each transmission shaft, and two adjacent transmission shafts are meshed through the transmission gears; the transmission gears comprise open-pore gears and non-open-pore gears, each transmission shaft is provided with an oil guide cavity with one end open and is connected with the open-pore gears, each open-pore gear is provided with an oil guide hole communicated with the oil guide cavity, and two adjacent transmission shafts are meshed with the non-open-pore gears through the open-pore gears; and a bearing is arranged between one end of the transmission shaft corresponding to the opening and the box body. According to the invention, the lubricating oil is extruded through the mutual engagement of the perforated gear and the non-perforated gear, so that the lubricating oil enters the oil guide hole and is thrown to the inner wall of the box along with the rotation of the perforated gear, and then flows back into the box through the bearing, thereby realizing forced mechanical lubrication.
Description
Technical Field
The invention relates to the technical field of speed reducers, in particular to a bearing lubricating structure.
Background
At present, in a speed reducer such as a gearbox, lubricating oil is thrown from the inside of the gearbox to the inside of the oil receiving groove. The lubricating oil in the oil receiving groove flows into the oil cavity of the end face of the gear shaft bearing through the oil guide hole. The lubricating oil in the oil chamber flows back into the housing through the bearing. This structure is realized by splash flow lubrication, but is easily thrown out of the oil guide hole with high-speed rotation of the gear shaft.
Disclosure of Invention
Therefore, the invention aims to solve the technical problem that the speed reducer is easy to throw out of the oil guide hole along with the high-speed rotation of the gear shaft during lubrication in the prior art.
In order to solve the above technical problems, the present invention provides a bearing lubrication structure, including:
a case;
the multistage transmission assembly is rotationally connected to the box body and comprises a plurality of transmission shafts and transmission gears connected to each transmission shaft, and two adjacent transmission shafts are meshed through the transmission gears;
the transmission gears comprise open-pore gears and non-open-pore gears, each transmission shaft is provided with an oil guide cavity with one end open and connected with the open-pore gears, each open-pore gear is provided with an oil guide hole communicated with the oil guide cavity, and two adjacent transmission shafts are meshed with the non-open-pore gears through the open-pore gears;
the lubricating oil flows back into the box body through the bearing after the lubricating oil entering the oil guide cavity through the oil guide hole is thrown to the inner wall of the box body along with the rotation of the hole gear.
In one embodiment of the present invention, the oil guide hole extends to the oil guide cavity along the surface of the open-pore gear and is inclined toward the opening direction.
In one embodiment of the present invention, the oil guide hole has a cylindrical shape.
In one embodiment of the present invention, the oil guiding hole is 30-45 ° with respect to the axis of the transmission shaft.
In one embodiment of the present invention, the oil guiding holes are circumferentially and uniformly distributed on the surface of the perforated gear.
In one embodiment of the invention, the oil guiding cavity is tapered and gradually contracts along a direction away from the opening, and the oil guiding hole is arranged at 1/4 to 1/3 of the axial length of the oil guiding cavity and is close to the small diameter end of the oil guiding cavity.
In one embodiment of the invention, the taper angle of the oil guiding cavity is 5-10 degrees.
In one embodiment of the invention, the cross-sectional dimension of the oil guide hole is smaller than the gap between the end surface of the bearing and the inner wall of the box body.
In one embodiment of the present invention, the cross-sectional dimension of the oil guiding hole is 3-4mm.
In one embodiment of the present invention, the transmission gear is a helical gear or a spur gear.
Compared with the prior art, the technical scheme of the invention has the following advantages:
according to the bearing lubricating structure, the lubricating oil is extruded through the mutual engagement of the perforated gear and the non-perforated gear, so that the lubricating oil enters the oil guide hole and is thrown to the inner wall of the box along with the rotation of the perforated gear, and then flows back into the box through the bearing, and forced mechanical lubrication is realized. The structure improves the original splash flow lubrication structure, improves the lubrication effect, reduces additional part materials and weight, simplifies the box design, and reduces the casting and processing difficulty and the workload of the shell. In addition, the cross section size of the oil guide hole is smaller than the gap between the end face of the bearing and the inner wall of the box body, so that the lubricating effect is further improved. The invention is suitable for bevel gears or straight gears, and can be applied to various scenes such as a transmission and the like.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.
Fig. 1 is a schematic view of a bearing lubrication structure of the present invention.
FIG. 2 is a schematic illustration of the application of the bearing lubrication structure of the present invention to a transmission.
Fig. 3 is a schematic overall structure of the transmission.
Description of the specification reference numerals:
100. an input gear of the transmission;
1. a case;
2. a multi-stage transmission assembly; 21. a transmission shaft; 211. an oil guiding cavity; 22a, a perforated gear; 221. an oil guide hole; 22b, a non-perforated gear;
3. and (3) a bearing.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.
In the present invention, if directions (up, down, left, right, front and rear) are described, they are merely for convenience of description of the technical solution of the present invention, and do not indicate or imply that the technical features must be in a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, "a plurality of" means one or more, and "a plurality of" means two or more, and "greater than", "less than", "exceeding", etc. are understood to not include the present number; "above", "below", "within" and the like are understood to include this number. In the description of the present invention, the description of "first" and "second" if any is used solely for the purpose of distinguishing between technical features and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the present invention, unless clearly defined otherwise, terms such as "disposed," "mounted," "connected," and the like should be construed broadly and may be connected directly or indirectly through an intermediate medium, for example; the connecting device can be fixedly connected, detachably connected and integrally formed; can be mechanically connected, electrically connected or capable of communicating with each other; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the invention can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.
Referring to fig. 1, a bearing lubrication structure of the present invention includes:
a case 1;
the multistage transmission assembly 2 is rotatably connected to the box body 1 and comprises a plurality of transmission shafts 21 and transmission gears connected to each transmission shaft 21, and two adjacent transmission shafts 21 are meshed through the respective transmission gears;
the transmission gears comprise open-pore gears 22a and non-open-pore gears 22b, each transmission shaft 21 is provided with an oil guiding cavity 211 with one end open and is connected with the open-pore gears 22a, each open-pore gear 22a is provided with an oil guiding hole 221 communicated with the oil guiding cavity 211, and two adjacent transmission shafts 21 are meshed with the non-open-pore gears 22b through the open-pore gears 22 a;
a bearing 3 is disposed between one end of the transmission shaft 21 corresponding to the opening and the case 1, and lubricating oil is extruded by the open-pore gear 22a and the non-open-pore gear 22b, and then the lubricating oil entering the oil guiding cavity 211 through the oil guiding hole 221 is thrown to the inner wall of the case 1 along with the rotation of the open-pore gear 22a, and flows back into the case 1 through the bearing 3 (refer to the arrow direction of fig. 1).
In some embodiments, the oil guiding hole 221 extends along the surface of the open gear 22a to the oil guiding cavity 211, and is inclined toward the opening direction. Through the arrangement, in the rotation process of the perforated gear 22a and the non-perforated gear 22b, the lubricating oil in the box body 1 is adhered to the two gears, the lubricating oil between the two gears is extruded in the process of mutual engagement, the lubricating oil is pressed into the oil guide hole 221, the oil guide hole 221 is communicated with the oil guide cavity 211 in the gear shaft, and because the oil guide hole 221 forms an included angle with the axis (gear axis) of the transmission shaft 21, when the position of the oil guide hole 221 is not on the meshing surface of the two gears, the lubricating oil entering the inner cavity of the gear shaft through the oil guide hole 221 cannot be thrown out from the oil guide hole 221 along with high-speed rotation of the transmission shaft 21.
In some embodiments, the oil guide hole 221 is cylindrical; the oil guide hole 221 is 30-45 degrees to the axis of the transmission shaft 21. The effective flow of the lubricating oil is ensured, the lubricating oil is prevented from being thrown out from the oil guide hole 221, and the lubricating effect is improved. After entering the oil guiding cavity 211, the lubricating oil is not thrown out by the high-speed rotation of the transmission shaft 21. The included angle of 30-45 degrees can reduce the influence of larger centrifugal force on the lubricating oil, so that the lubricating oil can relatively stably stay in the oil guide cavity 211 and cannot be thrown out of the oil guide hole 221.
In some embodiments, the oil guiding holes 221 are circumferentially and uniformly distributed on the surface of the open-hole gear 22 a. By the arrangement that the oil guide holes 221 are uniformly distributed on the surface of the perforated gear 22a in the circumferential direction, lubricating oil can enter the oil guide cavity 211 more uniformly, and the lubricating effect is improved.
In some embodiments, the oil guiding cavity 211 is tapered, and gradually contracts in a direction away from the opening; the oil guide hole 221 is disposed at 1/4 to 1/3 of the axial length of the oil guide cavity 211 and is close to the small diameter end of the oil guide cavity 211, and the taper angle of the oil guide cavity 211 is 5-10 °. The lubricating oil can flow more smoothly, and the lubricating effect is improved.
Because the oil guiding cavity 211 is a smooth cone, one end of the opening of the cone is provided with the bearing 3, and the lubricating oil entering the oil guiding cavity 211 through the oil guiding hole 221 is thrown to the inner wall of the box body 1 along with the high-speed rotation of the transmission shaft 21, and the lubricating oil entering the inner wall of the box body 1 flows back into the box body 1 through the bearing 3. By machining the interior of the drive shaft 21 into a hollow structure, additional component materials are reduced, and simultaneously, the weight is reduced, and the design of the box body 1 is more concise and attractive, and the casting and machining difficulty and workload of the shell are reduced.
In addition, the oil guiding cavity 211 with the conical structure can control the flow speed of the lubricating oil, the lubricating oil flow speed is higher at one end of the oil guiding cavity 211 with a smaller conical angle, the lubricating oil can quickly flow to the far end of the oil guiding cavity 211, and the lubricating oil flow speed is lower at one end with a larger conical angle, so that a stable lubricating oil flow layer can be formed. Thus, the lubricating oil can be ensured to smoothly flow after entering the oil guiding cavity 211 from the oil guiding hole 221, and can not be thrown out rapidly; turbulence of the lubricating oil can be reduced. When the lubricating oil flows into the oil guiding cavity 211, the taper angle can gradually enlarge the flowing process of the lubricating oil, reduce the impact and turbulence of the lubricating oil and keep the stable fluidity of the lubricating oil. In contrast, the right-angle structure easily causes turbulence, so that lubricating oil cannot flow stably, and the risk of throwing out the lubricating oil is increased; the taper angle can increase the volume of the oil guiding chamber 211, and since the oil guiding hole 221 is connected with the oil guiding chamber 211 in a taper angle, the volume of the oil guiding chamber 211 is relatively large. This provides enough space to hold the lubricating oil and allows the lubricating oil to form a sufficient lubricating oil layer in the oil guiding chamber 211, increasing the lubricating effect; the taper angle can ensure the effective flow of the lubricating oil within the range of 5-10 degrees, so that the lubricating oil is prevented from being thrown out of the oil guide hole 221, and the lubricating effect is improved.
In some embodiments, the cross-sectional dimension of the oil guiding hole 221 is smaller than the gap between the end surface of the bearing 3 and the inner wall of the box 1; the cross section size of the oil guiding hole 221 is 3-4mm, if the cross section size of the oil guiding hole 221 is larger than the gap between the end face of the bearing 3 and the inner wall of the box body 1, lubricating oil may leak out through the gap, so that the lubricating effect is reduced. By providing the smaller cross-sectional size of the oil guide hole 221, the flow direction of the lubricating oil can be restricted so as to flow to the oil guide chamber 211 and leak into the gap.
In some embodiments, as shown in fig. 2-3, the bearing 3 lubrication is applied to the transmission, the drive motor is connected to the drive shaft 21 (i.e., input shaft) of the first stage, and the drive shaft 21 (i.e., output shaft) of the last stage is meshed with the input gear 100 of the transmission.
The bearing lubrication structure is forced mechanical lubrication, improves the original splash flow lubrication structure, improves the bearing lubrication effect through forced mechanical lubrication, reduces abrasion and prolongs the service lives of the bearing and the gear. The gear is suitable for different types of gears, such as bevel gears or straight gears, and the transmission gear and the transmission shaft 21 are integrally formed, so that the gear has strong universality.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (10)
1. A bearing lubrication structure, comprising:
a case (1);
the multistage transmission assembly (2) is rotatably connected to the box body (1) and comprises a plurality of transmission shafts (21) and transmission gears connected to each transmission shaft (21), and two adjacent transmission shafts (21) are meshed through the respective transmission gears;
the transmission gears comprise open-pore gears (22 a) and non-open-pore gears (22 b), each transmission shaft (21) is provided with an oil guide cavity (211) with one end open and is connected with the open-pore gears (22 a), each open-pore gear (22 a) is provided with an oil guide hole (221) communicated with the oil guide cavity (211), and two adjacent transmission shafts (21) are meshed with the non-open-pore gears (22 b) through the open-pore gears (22 a);
the lubricating oil is extruded by the perforated gear (22 a) and the non-perforated gear (22 b), and then flows into the oil guide cavity (211) through the oil guide hole (221), and is thrown to the inner wall of the box (1) along with the rotation of the perforated gear (22 a), and flows back into the box (1) through the bearing (3).
2. A bearing lubrication structure according to claim 1, wherein the oil guide hole (221) extends along the surface of the open-pore gear (22 a) to the oil guide cavity (211) and is inclined toward the opening direction.
3. A bearing lubrication structure according to claim 2, wherein the oil guide hole (221) is cylindrical.
4. A bearing lubrication arrangement according to claim 3, characterized in that the oil guiding hole (221) is at an angle of 30-45 ° to the axis of the drive shaft (21).
5. A bearing lubrication structure according to any one of claims 1 to 4, wherein the oil guide holes (221) are circumferentially and uniformly distributed on the surface of the open-pore gear (22 a).
6. The bearing lubrication structure according to claim 1, wherein the oil guiding chamber (211) is tapered, gradually shrinking in a direction away from the opening, and the oil guiding hole (221) is provided at 1/4 to 1/3 of the axial length of the oil guiding chamber (211) and near a small diameter end of the oil guiding chamber (211).
7. A bearing lubrication arrangement according to claim 6, characterized in that the angle of taper of the oil guiding cavity (211) is between 5 and 10 °.
8. A bearing lubrication structure according to claim 1, wherein the oil guide hole (221) has a cross-sectional size smaller than a gap between the end surface of the bearing (3) and the inner wall of the housing (1).
9. A bearing lubrication structure according to claim 8, wherein the oil guiding hole (221) has a cross-sectional dimension of 3-4mm.
10. A bearing lubrication arrangement according to claim 1, characterized in that the drive gear is a helical gear or a spur gear, which is integrally formed with the drive shaft (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311096081.5A CN116816906A (en) | 2023-08-29 | 2023-08-29 | Bearing lubricating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311096081.5A CN116816906A (en) | 2023-08-29 | 2023-08-29 | Bearing lubricating structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116816906A true CN116816906A (en) | 2023-09-29 |
Family
ID=88141527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311096081.5A Pending CN116816906A (en) | 2023-08-29 | 2023-08-29 | Bearing lubricating structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN116816906A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1328448A (en) * | 1970-01-30 | 1973-08-30 | Stal Laval Turbin Ab | Gear wheel with lubricating means |
| CN204186926U (en) * | 2014-10-31 | 2015-03-04 | 重庆康田齿轮有限公司 | Gearbox creeper gear driving gearshaft |
| CN105135188A (en) * | 2015-08-18 | 2015-12-09 | 南京中船绿洲机器有限公司 | Bearing lubricating system for disc separator |
| CN206958168U (en) * | 2017-07-07 | 2018-02-02 | 杭州宗兴齿轮有限公司 | A kind of loading machine driving axle spiral bevel gear pair |
| CN206983728U (en) * | 2017-07-06 | 2018-02-09 | 株洲欧格瑞传动股份有限公司 | A kind of electric drive assembly with high speed shaft lubricating arrangement |
| CN108662123A (en) * | 2018-07-03 | 2018-10-16 | 广西玉柴机器股份有限公司 | Hydraulic pump idle gear axis |
| CN108953577A (en) * | 2018-09-27 | 2018-12-07 | 湖南机油泵股份有限公司 | A kind of retarder oil pump of fast lubricant oil duct integrated form |
| CN110043640A (en) * | 2019-05-22 | 2019-07-23 | 吉林大学 | A kind of retarder bearing lubrication structure |
| CN209977200U (en) * | 2019-05-21 | 2020-01-21 | 常州和仕达机械装备制造有限公司 | Driven shaft of gearbox |
| CN210978482U (en) * | 2019-08-02 | 2020-07-10 | 中国第一汽车股份有限公司 | Power transmission device lubricating structure |
| 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 |
| CN113431889A (en) * | 2021-06-02 | 2021-09-24 | 中国航发湖南动力机械研究所 | Output shaft bearing oil feeding mechanism, intermediate speed reducer and helicopter |
| CN114857251A (en) * | 2022-05-31 | 2022-08-05 | 重庆青山工业有限责任公司 | Lubricating structure of transmission shaft assembly |
-
2023
- 2023-08-29 CN CN202311096081.5A patent/CN116816906A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1328448A (en) * | 1970-01-30 | 1973-08-30 | Stal Laval Turbin Ab | Gear wheel with lubricating means |
| CN204186926U (en) * | 2014-10-31 | 2015-03-04 | 重庆康田齿轮有限公司 | Gearbox creeper gear driving gearshaft |
| CN105135188A (en) * | 2015-08-18 | 2015-12-09 | 南京中船绿洲机器有限公司 | Bearing lubricating system for disc separator |
| CN206983728U (en) * | 2017-07-06 | 2018-02-09 | 株洲欧格瑞传动股份有限公司 | A kind of electric drive assembly with high speed shaft lubricating arrangement |
| CN206958168U (en) * | 2017-07-07 | 2018-02-02 | 杭州宗兴齿轮有限公司 | A kind of loading machine driving axle spiral bevel gear pair |
| CN108662123A (en) * | 2018-07-03 | 2018-10-16 | 广西玉柴机器股份有限公司 | Hydraulic pump idle gear axis |
| CN108953577A (en) * | 2018-09-27 | 2018-12-07 | 湖南机油泵股份有限公司 | A kind of retarder oil pump of fast lubricant oil duct integrated form |
| CN209977200U (en) * | 2019-05-21 | 2020-01-21 | 常州和仕达机械装备制造有限公司 | Driven shaft of gearbox |
| CN110043640A (en) * | 2019-05-22 | 2019-07-23 | 吉林大学 | A kind of retarder bearing lubrication structure |
| CN210978482U (en) * | 2019-08-02 | 2020-07-10 | 中国第一汽车股份有限公司 | Power transmission device lubricating structure |
| 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 |
| CN113431889A (en) * | 2021-06-02 | 2021-09-24 | 中国航发湖南动力机械研究所 | Output shaft bearing oil feeding mechanism, intermediate speed reducer and helicopter |
| CN114857251A (en) * | 2022-05-31 | 2022-08-05 | 重庆青山工业有限责任公司 | Lubricating structure of transmission shaft assembly |
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Application publication date: 20230929 |