CN115370729A - Geared motor having a motor driving a gear reducer - Google Patents
Geared motor having a motor driving a gear reducer Download PDFInfo
- Publication number
- CN115370729A CN115370729A CN202110539507.4A CN202110539507A CN115370729A CN 115370729 A CN115370729 A CN 115370729A CN 202110539507 A CN202110539507 A CN 202110539507A CN 115370729 A CN115370729 A CN 115370729A
- Authority
- CN
- China
- Prior art keywords
- bearing flange
- cover plate
- output shaft
- preparation
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003638 chemical reducing agent Substances 0.000 title claims description 25
- 239000003921 oil Substances 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 239000010687 lubricating oil Substances 0.000 claims abstract description 5
- 239000004519 grease Substances 0.000 claims description 26
- 210000002445 nipple Anatomy 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 11
- 238000005461 lubrication Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
Images
Classifications
-
- 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
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- 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
-
- 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
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
-
- 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
- F16H57/031—Gearboxes; Mounting gearing therein characterised by covers or lids for gearboxes
-
- 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
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
- F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes
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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
- F16H57/0463—Grease lubrication; Drop-feed lubrication
- F16H57/0464—Grease lubrication
Abstract
The invention relates to a geared motor having an electric motor that drives a gear unit, wherein a bearing flange of the gear unit is fastened to a housing part of the gear unit, wherein a bearing for rotatably mounting an output shaft of the gear unit is accommodated in the bearing flange, wherein a shaft sealing ring is accommodated in the bearing flange, which shaft sealing ring is sealed, in particular performs a sealing function, with respect to the output shaft, wherein a cover plate is fastened, in particular by means of a screw, to the bearing flange on the side of the bearing flange facing away from a gear unit interior space filled, in particular with lubricating oil, wherein the cover plate has an oil groove running around in the circumferential direction on its side facing the bearing flange, wherein a radial bore is formed in the cover plate, which radial bore opens into one of the oil grooves, in particular into the radially outermost oil groove.
Description
Technical Field
The present invention relates to a reduction motor with a motor driving a reducer.
Background
It is generally known that a reduction motor can be configured with a motor that drives a reduction gear.
Disclosure of Invention
The object of the invention is therefore to improve the operational reliability and the service life of a geared motor.
According to the invention, this object is achieved by an electric machine according to the features given in claim 1.
In a geared motor having a motor for driving a gear reducer, the important feature of the invention is that the bearing flange of the gear reducer is fixed to the housing part of the gear reducer,
wherein a bearing for rotatably supporting an output shaft of the speed reducer is received in the bearing flange,
wherein a shaft sealing ring is also received in the bearing flange, which shaft sealing ring seals, in particular performs a sealing function,
wherein the cover plate is fastened to the bearing flange on the side of the bearing flange facing away from the reducer interior, in particular filled with lubricating oil, in particular by means of screws,
wherein the cover plate has an oil groove which surrounds in the circumferential direction on its side facing the bearing flange,
in this case, a radial bore is formed in the cover plate, which leads into one of the oil grooves, in particular into the radially outermost oil groove.
The advantage here is that the operational reliability and the life of the gear motor are improved. Since the joint of the cover plate with the grease lubrication improves the service life of the shaft sealing ring on the one hand and prevents the ingress of dust or dirt on the other hand, the operational reliability and also the service life are increased.
In this case, the cover plate can be produced and installed in a simple manner. It is also important here that the grease is filled via a line, so that the filling can take place at a distance from the retarder. In this way, a minimum spacing can also be maintained, so that contact of the rotating parts and the attendant risk of accident can be avoided.
In an advantageous embodiment, the line is connected to the cover. The advantage here is that the cover plate can be installed afterwards without having to modify the retarder, so that the grease lubrication can be added afterwards to the existing installation together with the cover plate.
In an advantageous embodiment, a gap, in particular an annular gap, is formed between the cover plate and the output shaft. Grease over-pressure can be reduced through the gap and/or excess grease can be expelled through the gap. Thus, dirt can also be squeezed out.
The reduction motor with motor driving reducer according to claim 4, wherein the important feature is that the bearing flange of the reducer is fastened to the housing member of the reducer,
wherein a bearing for rotatably supporting an output shaft of the speed reducer is received in the bearing flange,
wherein a shaft sealing ring is received in the bearing flange, which shaft sealing ring seals off from the output shaft, in particular performs a sealing function,
wherein the cover plate is arranged on the bearing flange on the side of the bearing flange facing away from the reducer interior filled, in particular, with lubricating oil and is connected to the output shaft in a rotationally fixed manner,
in particular, wherein the cover plate is fitted onto the output shaft and is connected to the output shaft in a rotationally fixed manner,
wherein the cover plate has an oil groove which surrounds in the circumferential direction on its side facing the bearing flange,
in this case, a radial bore is formed in the cover plate, which leads into one of the oil grooves, in particular into the radially outermost oil groove.
The advantage here is that the operational reliability and the life of gear motor have been improved. Since the joint of the cover plate with the grease lubrication improves the service life of the shaft sealing ring on the one hand and prevents the ingress of dust or dirt on the other hand, the operational reliability and also the service life are increased.
The cover plate can be produced and installed in a simple manner. It is important here that the grease is filled via a line leading to the bearing flange, so that the grease can be filled at a distance from the gear unit. In this way, a minimum distance can also be maintained, so that contact of the rotating parts, in particular with the cover plate, and the risk of accidents resulting therefrom can be avoided.
In particular, the pipe is flanged to the bearing. The advantage here is that a compact solution is achieved, since no additional installation space is required for the lubrication through the bearing flange.
In particular, the cover plate is connected to the output shaft in a sealing manner. The advantage here is that a labyrinth seal can be formed between the bearing flange and the cover plate.
In an advantageous embodiment of one of the gear motors described above, the line opens into the radial bore. The advantage here is that the grease can be fed from a reliable location and accident risks or injuries can be avoided.
In an advantageous embodiment of one of the above-described geared motors, the end region of the line is fastened to the housing part of the motor. The advantage here is that it is possible to fill the region of the electric machine with grease and to guide the lines outside the electric machine, i.e. the lines are not integrated in the electric machine. In this way, the function of the motor can be reliably ensured even if the pipeline is damaged.
In an advantageous embodiment of one of the gear motors described above, an oil nozzle is arranged on the end region to enable the supply of grease. The advantage here is that a simple supply can be achieved.
In an advantageous embodiment of one of the above-described geared motors, the oil grooves are arranged and configured coaxially with respect to one another and/or with respect to the rotational axis of the output shaft. The advantage here is that a labyrinth can be formed by means of the oil grooves and the projections projecting axially from the bearing flange.
In an advantageous embodiment of one of the above-described geared motors, the oil groove is designed in the circumferential direction without interruption and/or completely around it. The advantage here is that an effective grease supply and a large storage volume can be provided.
In an advantageous embodiment of one of the above-described geared motors, projections extending in the circumferential direction are formed on the side of the bearing flange facing the cover plate, which projections project into the oil sump, in particular for forming a labyrinth seal. The advantage here is that the labyrinth can be constructed in a simple manner, so that a high tightness and a large storage volume can be provided.
In an advantageous embodiment of one of the gear motors described above, the cover plate has an opening, in particular a circular hole, through which the output shaft protrudes. The advantage here is that a simple assembly can be achieved.
Further advantages emerge from the dependent claims. The invention is not limited to the combination of features of the claims. Other possible combinations of the features of the claims and/or of the individual claims and/or of the features of the description and/or of the drawings are obvious to the person skilled in the art, especially from the objects set forth and/or compared with the prior art.
Drawings
The invention will now be explained in detail by means of a schematic drawing:
fig. 1 shows a side view of a geared motor according to the invention with a sectioned output region.
The output area is shown enlarged and schematically in fig. 2.
List of reference numerals:
1. bearing flange
2. Cover plate
3. Labyrinth sealing device
4. Screw nail
5. Oil filling nozzle for lubricating grease
6. Pipeline
7. Shaft sealing ring
8. Output shaft
9. Bearing assembly
10. Electric machine
11. Speed reducer
12. Shell piece
Detailed Description
As shown in the drawing, the decelerator 11 is driven by the motor 10 and connected to the motor 10.
The bearing flange 1 of the gear unit 11 is connected to a housing part 12 of the gear unit 11. The bearing flange 1 is fastened to the housing part 12, in particular by means of screws.
A bearing 9 is received in the bearing flange 1 for rotatably supporting the output shaft 8 of the gear unit 11.
The output shaft 8 extends from the reducer 11.
The shaft sealing ring 7 is arranged on the side of the bearing 9 facing away from the inner chamber. The shaft sealing ring 7 is received in the bearing flange and seals against the output shaft 8. The sealing lip of the shaft sealing ring 7 preferably acts on the working region of the output shaft 8 which is finished for this purpose.
The cover plate 2 is fixed to the bearing flange 1 by means of screws 4. For this purpose, screws 4 are screwed into the respective axially directed threaded holes of the bearing flange 1, so that the screw heads of the screws 4 press the cover plate 2 onto the bearing flange 1.
The reduction gear 11 is preferably embodied as a reversing gear and is fitted such that the axis of rotation of the output shaft 8 is oriented parallel to the axial direction. The axis of rotation of the rotor shaft of the motor 10 is preferably oriented vertically.
The output shaft 8 protrudes through an opening in the cover plate 2. Only a small gap is provided between the output shaft 8 and the cover plate 2, so that no contact occurs, but no appreciable grease loss occurs.
The side of the cover plate 2 facing the bearing flange 1 has circular oil grooves arranged coaxially to one another. Each oil groove is continuous in the circumferential direction with reference to the rotational axis of the output shaft 8.
Further recesses on the side of the cover plate 2 facing the bearing flange 1 extend in the radial direction and connect these oil grooves.
The radial bores of the cover plate 2 open into the oil sump at the radially outermost side.
To this radial bore, a line 6 leading from the outside is connected, through which grease can be supplied. Here, grease is introduced into the grease nipple 5 arranged at the end of the line 6 facing away from the bearing flange 1.
This end of the line 6 and/or the oil nipple 5 is fastened to a housing part of the electric motor 10, in particular to a fan housing of the electric motor 10.
On the side of the bearing flange 1 facing the cover plate 2, axially projecting projections extending in the circumferential direction are formed on the bearing flange, which projections project into the oil sump. Thereby, a labyrinth seal 3 filled with grease is formed between the cover plate 2 and the bearing flange 1. The cover plate 2 is fixed to the bearing flange 1 and is thereby connected to the bearing flange in a rotationally fixed manner.
Thus, grease lubrication is achieved by means of the labyrinth seal between the cover plate 2 and the bearing flange 1 and the working area of the sealing lip of the shaft sealing ring 7 is supplied with grease. Through the gap between the cover plate 2 and the output shaft 8, excess grease can be drained and/or an overpressure in the grease can be reduced. Furthermore, the gap can be filled with grease to prevent the ingress of dirt.
In other exemplary embodiments according to the invention, no screws 4 are provided and the cover plate 2 is connected to the output shaft 8 in a rotationally fixed manner. Instead of being arranged in the cover plate 2, a radial bore is arranged in the bearing flange 1 and opens out next to the recess, so that the labyrinth seal can be supplied with grease. The line 6 is then connected to the bearing flange 1, in particular to the radial bore.
Claims (13)
1. A reduction motor has a motor driving a reducer,
wherein, the bearing flange of the speed reducer is fastened on the shell component of the speed reducer,
wherein a bearing for rotatably supporting an output shaft of the speed reducer is received in the bearing flange,
wherein a shaft sealing ring is received in the bearing flange, which shaft sealing ring seals off from the shaft, in particular performs a sealing function,
wherein the cover plate is fastened, in particular by means of screws, to the bearing flange on the side of the bearing flange facing away from the reducer interior, in particular filled with lubricating oil,
wherein the cover plate has an oil groove which surrounds in the circumferential direction on its side facing the bearing flange,
in this case, a radial bore is formed in the cover plate, which leads into one of the oil grooves, in particular into the radially outermost oil groove.
2. The reduction motor in accordance with claim 1,
it is characterized in that the preparation method is characterized in that,
the pipeline is connected with the cover plate.
3. Geared motor according to any one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
a gap, in particular an annular gap, is formed between the cover plate and the output shaft.
4. A reduction motor has a motor driving a reducer,
wherein, the bearing flange of the speed reducer is fastened on the shell part of the speed reducer,
wherein a bearing for rotatably supporting an output shaft of the speed reducer is received in the bearing flange,
wherein a shaft sealing ring is received in the bearing flange, which shaft sealing ring seals off from the shaft, in particular performs a sealing function,
wherein the cover plate is arranged on the bearing flange on the side of the bearing flange facing away from the reducer interior, in particular filled with lubricating oil, and is connected to the output shaft in a rotationally fixed manner,
in particular, the cover plate is sleeved on the output shaft and is connected with the output shaft in a relatively non-rotatable manner,
wherein the cover plate has an oil groove which surrounds in the circumferential direction on its side facing the bearing flange,
in this case, a radial bore is formed in the cover plate, which leads into one of the oil grooves, in particular into the radially outermost oil groove.
5. The geared motor according to claim 4,
it is characterized in that the preparation method is characterized in that,
the pipeline is connected with the bearing flange.
6. The reduction motor according to claim 4 or 5,
it is characterized in that the preparation method is characterized in that,
the cover plate is connected with the output shaft in a sealing mode.
7. Gearmotor according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the conduit leads into the radial bore.
8. Gearmotor according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the end region of the line is fixed to the housing part of the electric motor.
9. Gearmotor according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
a grease nipple for feeding grease is arranged on the end region.
10. Geared motor according to any one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the oil grooves are arranged and formed coaxially with each other and/or with the rotational axis of the output shaft.
11. Geared motor according to any one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the oil groove is designed in the circumferential direction without interruption and/or completely around.
12. Gearmotor according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
projections extending in the circumferential direction are formed on the side of the bearing flange facing the cover plate, which projections project into the oil groove, in particular for forming a labyrinth seal.
13. Gearmotor according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the cover plate has an opening, in particular a circular hole, through which the output shaft protrudes.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110539507.4A CN115370729A (en) | 2021-05-18 | 2021-05-18 | Geared motor having a motor driving a gear reducer |
| EP22723547.0A EP4341585A1 (en) | 2021-05-18 | 2022-04-25 | Gear motor comprising an electric motor driving a transmission |
| DE102022001423.8A DE102022001423A1 (en) | 2021-05-18 | 2022-04-25 | Gear motor with an electric motor driving a gear |
| PCT/EP2022/025175 WO2022242900A1 (en) | 2021-05-18 | 2022-04-25 | Gear motor comprising an electric motor driving a transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110539507.4A CN115370729A (en) | 2021-05-18 | 2021-05-18 | Geared motor having a motor driving a gear reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115370729A true CN115370729A (en) | 2022-11-22 |
Family
ID=84059198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110539507.4A Pending CN115370729A (en) | 2021-05-18 | 2021-05-18 | Geared motor having a motor driving a gear reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115370729A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230098269A1 (en) * | 2020-03-31 | 2023-03-30 | Zf Friedrichshafen Ag | Input shaft seals for a transmission design series |
-
2021
- 2021-05-18 CN CN202110539507.4A patent/CN115370729A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230098269A1 (en) * | 2020-03-31 | 2023-03-30 | Zf Friedrichshafen Ag | Input shaft seals for a transmission design series |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination |