CN112065963A - Active lubrication structure for front bearing of input shaft of speed reducer - Google Patents
Active lubrication structure for front bearing of input shaft of speed reducer Download PDFInfo
- Publication number
- CN112065963A CN112065963A CN202010823102.9A CN202010823102A CN112065963A CN 112065963 A CN112065963 A CN 112065963A CN 202010823102 A CN202010823102 A CN 202010823102A CN 112065963 A CN112065963 A CN 112065963A
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- China
- Prior art keywords
- input shaft
- speed reducer
- bearing
- oil
- annular
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/045—Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
- F16H57/0417—Heat exchangers adapted or integrated in the gearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0436—Pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0447—Control of lubricant levels, e.g. lubricant level control dependent on temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0469—Bearings or seals
- F16H57/0471—Bearing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention belongs to the technical field of automobiles, and particularly relates to a front bearing active lubricating structure of an input shaft of a speed reducer. The device comprises a speed reducer shell, an input shaft bearing, an input shaft and an oil pump; the input shaft bearing is arranged on a bearing seat on the speed reducer shell; the input shaft bearing is sleeved on the input shaft; the reducer shell, the input shaft bearing and the input shaft form an annular oil storage cavity; an oil duct is arranged on the speed reducer shell, and an annular gap is formed between the speed reducer shell and the input shaft; and the oil pump pumps lubricating oil into the annular oil storage cavity through an oil passage of the speed reducer shell to lubricate the input shaft bearing. The liquid level height of the lubricating oil in the annular oil storage cavity is adjusted by adjusting the size of the annular gap between the speed reducer shell and the input shaft; when the rotational speed of oil pump 4 risees, when leading to annular oil storage intracavity oil pressure to increase, carry out the pressure release through the annular gap to play the regulated pressure effect, and this function just can guarantee by shell structure, need not additionally to increase spare part.
Description
Technical Field
The invention belongs to the technical field of automobiles, and particularly relates to a front bearing active lubricating structure of an input shaft of a speed reducer.
Background
With the continuous development of new energy vehicles, electric drive systems are also continuously updated, and the high speed of motors becomes one of the development directions. Along with the increase of the rotating speed of the motor, the rotating speed of the input shaft of the speed reducer connected with the motor is increased. In order to adapt to high rotating speed, the bearing used by the input shaft of the speed reducer adopts an active lubrication scheme.
At present, the rotating speed of domestic electric drive systems is mostly below 15000 r/min, and the speed reducer is mostly lubricated by splashing.
In addition, the conventional input shaft lubricating structure of the speed reducer has the following structure:
the reducer comprises a bearing, a bearing baffle and a reducer shaft, wherein the bearing, the bearing baffle and the reducer shaft are arranged in a reducer shell, a bearing inner ring is arranged on the reducer shaft, the bearing baffle is arranged on one side of the bearing, the bearing baffle is fixed on the reducer shell through bolts, and the reducer shell is used as a bearing seat; the bearing baffle comprises a baffle shoulder which is abutted against the bearing, and the baffle shoulder extends along the axial direction of the speed reducer shaft at the side far away from the bearing and is radially and inwardly retracted along the speed reducer shaft to form a lip baffle; the bearing baffle plate is matched with the reducer shell and the bearing seat to form a bearing oil containing cavity, and an oil guide groove is formed in the reducer shell relative to the bearing oil storage cavity.
In the above scheme, an additional bearing baffle is needed to form the oil storage cavity, and the bearing baffle needs to be fixed by bolts.
Disclosure of Invention
The invention provides a front bearing active lubrication structure of a speed reducer input shaft, which has a simple structure.A speed reducer shell, an input shaft bearing and an input shaft form an annular oil storage cavity; an annular gap is formed between the speed reducer shell and the input shaft; the height of the lubricating oil liquid level in the annular oil storage cavity is adjusted by adjusting the size of an annular gap between the speed reducer shell and the input shaft; when the rotational speed of oil pump 4 risees, when leading to annular oil storage intracavity oil pressure to increase, carry out the pressure release through the annular gap to play the regulated pressure effect, and this function only just can guarantee by shell structure, need not additionally to increase spare part, solved the above-mentioned problem that current reduction gear bearing lubricating structure exists.
The technical scheme of the invention is described as follows by combining the attached drawings:
a front bearing active lubrication structure of an input shaft of a speed reducer comprises a speed reducer shell 1, an input shaft bearing 2, an input shaft 3 and an oil pump 4; the input shaft bearing 2 is arranged on a bearing seat on the speed reducer shell 1; the input shaft bearing 2 is sleeved on the input shaft 3; the speed reducer shell 1, the input shaft bearing 2 and the input shaft 3 form an annular oil storage cavity; an oil channel is arranged on the speed reducer shell 1, and an annular gap is formed between the speed reducer shell 1 and the input shaft 3; and the oil pump 4 pumps lubricating oil into the annular oil storage cavity through an oil passage of the speed reducer shell 1 to lubricate the input shaft bearing 2.
The inner wall of the speed reducer shell 1, the outer wall of the input shaft 3 and the bearing wall of the input shaft bearing 2 form an annular oil storage cavity.
An annular gap is formed between the inner wall of the speed reducer casing 1 and the outer wall of the input shaft 3.
The bearing seat extends for a distance in the axial direction away from the input shaft bearing 2 side and contracts radially inward until an annular gap is formed with the outer diameter of the input shaft 3.
The height of the lubricating oil level in the annular oil storage cavity is adjusted by adjusting the size of the annular gap between the speed reducer shell 1 and the input shaft 3.
When the rotating speed of the oil pump 4 is increased, and the oil pressure in the annular oil storage cavity is increased, the pressure is released through the annular gap, so that the pressure adjusting effect is achieved.
The oil pump 4 is a mechanical oil pump.
The invention has the beneficial effects that:
1) the invention has simple structure and easy realization;
2) the speed reducer comprises a speed reducer shell, an input shaft bearing and an input shaft, wherein an annular oil storage cavity is formed by the speed reducer shell, the input shaft bearing and the input shaft; an annular gap is formed between the speed reducer shell and the input shaft; the height of the lubricating oil liquid level in the annular oil storage cavity is adjusted by adjusting the size of an annular gap between the speed reducer shell and the input shaft; when the rotating speed of the oil pump 4 is increased to cause the oil pressure in the annular oil storage cavity to be increased, the annular gap is used for pressure relief, so that the pressure adjusting effect is achieved, the function is ensured only by the shell structure, and additional parts are not needed;
3) the rotating speed of the electric drive system can reach 18000 r/min, the motor adopts an oil cooling mode, a mechanical oil pump is adopted in the speed reducer, and a closed-loop cooling and lubricating system is formed by the speed reducer and an oil duct of the motor shell.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a front view of the present invention;
fig. 2 is a schematic perspective view of the present invention.
In the figure: 1. a reducer housing;
2. an input shaft bearing;
3. an input shaft;
4. an oil pump.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Referring to fig. 1 and 2, the active lubrication structure for the front bearing of the input shaft of the speed reducer comprises a speed reducer shell 1, an input shaft bearing 2, an input shaft 3 and an oil pump 4.
The input shaft bearing 2 is arranged on a bearing seat on the speed reducer shell 1; the input shaft bearing 2 is sleeved on the input shaft 3.
An oil passage is arranged on the speed reducer shell 1.
The inner wall of the speed reducer shell 1, the outer wall of the input shaft 3 and the bearing wall of the input shaft bearing 2 form an annular oil storage cavity.
An annular gap is formed between the inner wall of the speed reducer casing 1 and the outer wall of the input shaft 3.
The bearing seat extends for a distance in the axial direction away from the input shaft bearing 2 side and contracts radially inward until an annular gap is formed with the outer diameter of the input shaft 3.
The height of the lubricating oil level in the annular oil storage cavity is adjusted by adjusting the size of the annular gap between the speed reducer shell 1 and the input shaft 3.
And the oil pump 4 pumps lubricating oil into the annular oil storage cavity through an oil passage of the speed reducer shell 1 to lubricate the input shaft bearing 2.
When the rotating speed of the oil pump 4 is increased, and the oil pressure in the annular oil storage cavity is increased, the pressure is released through the annular gap, so that the pressure adjusting effect is achieved.
The oil pump 4 is a mechanical oil pump.
The rotating speed of the electric drive system can reach 18000 r/min, the motor adopts an oil cooling mode, a mechanical oil pump is adopted in the speed reducer, and a closed-loop cooling and lubricating system is formed by the speed reducer and an oil duct of the motor shell.
Referring to fig. 2, during operation, the oil pump 4 pumps lubricating oil into the annular oil storage cavity through the oil passage of the reducer housing 1, so as to form a certain height of lubricating oil in the oil storage cavity and lubricate the input shaft bearing 2.
The height of the lubricating oil liquid level continuously rises along with the oil pumping action of the oil pump 4, and when the rotating speed of the oil pump 4 is low, the liquid level exceeds the annular gap and then flows out of the annular oil storage cavity through the gap.
When 4 rotational speeds of oil pump are higher, the oil mass that flows out from the annular clearance is less than the oil mass that 4 pumps of oil pump, and annular oil storage chamber can be full of, and later the oil pressure can rise along with the increase of pump oil mass, and at this moment, the annular clearance then plays the pressure release effect.
The invention has simple structure and easy realization; the pressure relief function of the oil pump 4 when the high-speed oil supply amount is overlarge can be realized, and the function is ensured only by the shell structure without additionally adding parts.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A front bearing active lubrication structure of an input shaft of a speed reducer is characterized by comprising a speed reducer shell (1), an input shaft bearing (2), an input shaft (3) and an oil pump (4); the input shaft bearing (2) is arranged on a bearing seat on the speed reducer shell (1); the input shaft bearing (2) is sleeved on the input shaft (3); the speed reducer comprises a speed reducer shell (1), an input shaft bearing (2) and an input shaft (3), wherein an annular oil storage cavity is formed by the speed reducer shell, the input shaft bearing (2) and the input shaft (3); an oil channel is arranged on the speed reducer shell (1), and an annular gap is formed between the speed reducer shell (1) and the input shaft (3); and the oil pump (4) pumps lubricating oil into the annular oil storage cavity through an oil passage of the speed reducer shell (1) to lubricate the input shaft bearing (2).
2. The active lubrication structure for the front bearing of the input shaft of the speed reducer according to claim 1, wherein the inner wall of the speed reducer casing (1), the outer wall of the input shaft (3) and the bearing wall of the input shaft bearing (2) form an annular oil storage chamber.
3. A reducer input shaft front bearing active lubrication structure according to claim 1, characterized in that there is an annular gap between the inner wall of the reducer housing (1) and the outer wall of the input shaft (3).
4. A reducer input shaft front bearing active lubrication structure according to claim 1, characterized in that the bearing housing extends a distance axially away from the input shaft bearing (2) side and contracts radially inward until an annular clearance is formed with the input shaft (3) outer diameter.
5. The active lubrication structure for the front bearing of the input shaft of the speed reducer according to claim 1, wherein the height of the lubricating oil level in the annular oil storage cavity is adjusted by adjusting the size of the annular gap between the speed reducer casing (1) and the input shaft (3).
6. The active lubrication structure of the front bearing of the input shaft of the speed reducer according to claim 1, characterized in that when the rotation speed of the oil pump (4) is increased, which causes the oil pressure in the annular oil storage cavity to be increased, the pressure is relieved through the annular gap, so that the pressure is adjusted.
7. Active lubrication structure for the front bearing of the input shaft of a speed reducer according to claim 1, characterized in that the oil pump (4) is a mechanical oil pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010823102.9A CN112065963A (en) | 2020-08-17 | 2020-08-17 | Active lubrication structure for front bearing of input shaft of speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010823102.9A CN112065963A (en) | 2020-08-17 | 2020-08-17 | Active lubrication structure for front bearing of input shaft of speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112065963A true CN112065963A (en) | 2020-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010823102.9A Pending CN112065963A (en) | 2020-08-17 | 2020-08-17 | Active lubrication structure for front bearing of input shaft of speed reducer |
Country Status (1)
| Country | Link |
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| CN (1) | CN112065963A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163804A (en) * | 2022-07-04 | 2022-10-11 | 一汽奔腾轿车有限公司 | New energy automobile speed reducer gear lubricating method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201043605Y (en) * | 2007-05-12 | 2008-04-02 | 四川慧剑石化装备有限责任公司 | Axle head sealing structure of speed reducer |
| CN201255233Y (en) * | 2008-09-12 | 2009-06-10 | 中国第一汽车集团公司 | O-shaped sealing ring sealing mechanism |
| CN202360731U (en) * | 2011-12-14 | 2012-08-01 | 中国第一汽车股份有限公司 | Structure for controlling flow rate and flow direction of lubricating oil in intermediate shaft of automatic speed changer |
| CN207195658U (en) * | 2017-09-11 | 2018-04-06 | 江苏国茂减速机股份有限公司 | A kind of non-maintaining sealing structure in shaft end |
| US20180118023A1 (en) * | 2015-04-17 | 2018-05-03 | Ntn Corporation | Motor drive device for automobile and equipped with speed reducer |
| CN110285212A (en) * | 2019-06-28 | 2019-09-27 | 西北工业大学 | A kind of circulation oil jet lubrication vertical speed reducer |
-
2020
- 2020-08-17 CN CN202010823102.9A patent/CN112065963A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201043605Y (en) * | 2007-05-12 | 2008-04-02 | 四川慧剑石化装备有限责任公司 | Axle head sealing structure of speed reducer |
| CN201255233Y (en) * | 2008-09-12 | 2009-06-10 | 中国第一汽车集团公司 | O-shaped sealing ring sealing mechanism |
| CN202360731U (en) * | 2011-12-14 | 2012-08-01 | 中国第一汽车股份有限公司 | Structure for controlling flow rate and flow direction of lubricating oil in intermediate shaft of automatic speed changer |
| US20180118023A1 (en) * | 2015-04-17 | 2018-05-03 | Ntn Corporation | Motor drive device for automobile and equipped with speed reducer |
| CN207195658U (en) * | 2017-09-11 | 2018-04-06 | 江苏国茂减速机股份有限公司 | A kind of non-maintaining sealing structure in shaft end |
| CN110285212A (en) * | 2019-06-28 | 2019-09-27 | 西北工业大学 | A kind of circulation oil jet lubrication vertical speed reducer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163804A (en) * | 2022-07-04 | 2022-10-11 | 一汽奔腾轿车有限公司 | New energy automobile speed reducer gear lubricating method |
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Application publication date: 20201211 |
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| RJ01 | Rejection of invention patent application after publication |