CN214743198U - Speed reducer - Google Patents
Speed reducer Download PDFInfo
- Publication number
- CN214743198U CN214743198U CN202121105255.6U CN202121105255U CN214743198U CN 214743198 U CN214743198 U CN 214743198U CN 202121105255 U CN202121105255 U CN 202121105255U CN 214743198 U CN214743198 U CN 214743198U
- Authority
- CN
- China
- Prior art keywords
- shaft
- hollow shaft
- preparation
- output shaft
- 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.)
- Active
Links
Images
Landscapes
- General Details Of Gearings (AREA)
Abstract
The invention relates to a reduction gear having a housing part and a hollow shaft, in which a bearing is accommodated, which bearing supports the hollow shaft in a rotatable manner, an intermediate part is connected to the housing part, in particular by means of a screw, a flange part is connected to the intermediate part on the side of the intermediate part facing away from the housing part, in particular by means of a screw, in the flange part an angular contact bearing, in particular an axial bearing, is accommodated, the radial thrust bearing rotatably supports an output shaft, in particular an output shaft which is embodied as a hollow shaft, the output shaft having an external toothing, in particular a spline toothing, which is inserted into an internal toothing of the hollow shaft, so that the output shaft is connected to the hollow shaft in a rotationally fixed manner, the shaft part having an external thread region which is screwed into an internal thread region of the output shaft, a step is formed on the shaft part, against which the hollow shaft rests.
Description
Technical Field
The utility model relates to a speed reducer, it has housing part and hollow shaft.
Background
It is generally known to form a gear unit with a housing part.
SUMMERY OF THE UTILITY MODEL
Therefore, the object of the present invention is to provide a reduction gear with a durable improvement.
According to the invention, this object is achieved by a speed reducer of the kind set forth below.
In the reducer aspect, the important feature of the present invention is that the reducer is provided with a housing part and a hollow shaft,
wherein a bearing is received in the housing part, which bearing rotatably supports the hollow shaft,
wherein the intermediate piece is connected to the housing part, in particular by means of a screw,
wherein the flange part is connected to the intermediate part, in particular by means of a screw, on the side of the intermediate part facing away from the housing part,
wherein an angular contact bearing/radial thrust bearing, in particular an axial bearing, is received in the flange part,
the angular contact bearing rotatably supports an output shaft, in particular an output shaft embodied as a hollow shaft,
wherein the output shaft has an external toothing, in particular a spline toothing, which is inserted into an internal toothing of the hollow shaft, so that the output shaft is connected to the hollow shaft in a rotationally fixed manner,
wherein the shaft part has an external thread region which is screwed into an internal thread region of the output shaft,
a step is formed on the shaft part, against which the hollow shaft rests.
The advantage here is that additional angular contact bearings can be installed, so that the reduction gear is more robust, in particular with respect to high axial forces introduced via the output shaft on the load side.
In an advantageous embodiment, the region covered by the output shaft in the axial direction overlaps the region covered by the hollow shaft in the axial direction,
wherein the area covered by the hollow shaft in the axial direction includes an area covered by the external teeth portion in the axial direction,
in particular, the axial direction is oriented parallel to the direction of the rotational axis of the hollow shaft. The shaft part is advantageously inserted into the hollow shaft and can be screwed to an output shaft inserted into the hollow shaft on the other side of the hollow shaft. In this way, an axial tensioning of the output shaft relative to the hollow shaft is achieved.
In an advantageous embodiment, the region covered by the output shaft together with the shaft part in the axial direction comprises a region covered by the hollow shaft in the axial direction,
in particular, the axial direction is oriented parallel to the direction of the rotational axis of the hollow shaft. The advantage here is that the output shaft, although inserted into the hollow shaft and connected in a rotationally fixed manner by means of the toothed region, is inserted from the other side into the hollow shaft and screwed into the output shaft.
In an advantageous embodiment, the output shaft, the hollow shaft and the shaft part are oriented coaxially with respect to one another,
in particular, the shaft part is embodied as a hollow shaft. The advantage here is that the output shaft, as it were, lengthens the hollow shaft and therefore angular contact bearings can be mounted.
In an advantageous embodiment, a shaft nut is screwed onto a further external thread region of the shaft part, which shaft nut contacts the hollow shaft, in particular wherein the shaft nut serves as a locking nut. The advantage here is that an effective, secure shaft locking can be provided.
In an advantageous embodiment, the inner ring of the angular contact bearing rests on the step of the output shaft. The advantage here is that the angular contact bearing can be tensioned when the flange part is fitted to the intermediate part. Independently of this, bearing stresses can be built up for the bearings of the hollow shaft which are received in the housing part by the cover part being connectable to the housing part such that the outer ring of one of the bearings presses against the cover part.
In an advantageous embodiment, the outer ring of the angular contact bearing is received in the flange part and rests on the intermediate part. The advantage here is that the angular contact bearing can be tensioned when the flange part is fitted to the intermediate part. The bearing stress of the two bearings of the hollow shaft accommodated in the housing part can be adjusted independently of this, i.e. independently of this.
In an advantageous embodiment, a shaft sealing ring is received in the intermediate piece, which shaft sealing ring seals against the hollow shaft. In this case, it is advantageous that different lubricants or different lubricant levels can be provided in the interior of the gear unit or in the region of the angular contact bearing. For example, grease can be provided in the angular contact bearing and oil can be provided in the interior.
In an advantageous embodiment, a further shaft sealing ring is received in the intermediate piece, which further shaft sealing ring seals against the output shaft. The advantage here is that the lubricant cannot penetrate into the external environment through the connecting regions between the output shaft, the hollow shaft and the shaft part.
In an advantageous embodiment, the gear wheel of the reduction gear is fitted to the hollow shaft and is connected to the hollow shaft in a rotationally fixed manner. In this case, it is advantageous if the hollow shaft delivers a high torque from the output gear stage of the reduction gear, which can be applied to the driven load even in the presence of load-side introduced axial forces.
In an advantageous embodiment, a radial bore is arranged in the flange part, in which radial bore a pressure compensation element, in particular a venting valve, is arranged. The advantage here is that a pressure equalization with respect to the surroundings takes place, so that the tightness of the shaft sealing ring is not compromised by an inadmissibly high overpressure.
In an advantageous embodiment, a further radial bore, which is spaced apart from the radial bore in the circumferential direction, is formed in the flange part, in which further radial bore a transparent window is received,
in particular, the transparent window acts as a control window, in particular as an oil observation window. The advantage here is that the lubricant level can be monitored.
In an advantageous embodiment, the angular contact bearing is designed as a tapered roller bearing or as a barrel roller bearing. The advantage here is that high axial forces can be absorbed.
In an advantageous embodiment, the intermediate part has a centering collar which bears against a bearing receptacle of the bearing of the hollow shaft. It is advantageous here to achieve a precise orientation.
In an advantageous embodiment, the reduction gear is a reversing gear (gear in which the input shaft is angled relative to the output shaft), in particular such that the axial forces introduced on the load side are oriented perpendicular to the axis of rotation of the input shaft. The advantage here is that high axial forces can be absorbed on the output side in the reversing gear.
In a further advantageous embodiment, the reduction gear is a parallel-shaft transmission, in particular such that the axial forces introduced on the load side are oriented parallel to the axis of rotation of the input shaft. The advantage here is that high axial forces can be absorbed on the output side in a parallel-shaft transmission.
The present invention is not limited to the above-described combination of features. The above-described combinations of features and/or individual features and/or other possible combinations of features described below and/or of features shown in the drawings are obvious for a person skilled in the art, especially from the object set forth and/or compared with the prior art.
Drawings
The invention is now explained in detail with the aid of a schematic drawing:
fig. 1 shows a section of an additional axial bearing of a gear unit according to the invention.
Fig. 2 shows a reversing gear with an axial bearing in an oblique view.
Fig. 3 shows a parallel-axis gear with an axial bearing in an oblique view.
List of reference numerals:
1 hollow shaft
3-shaft component
4 bearing
5 Gear
6 bearing
7 housing part
8 intermediate member
9 shaft sealing ring
10 radial bore with exhaust valve
11 shaft sealing ring
12 Flange part
13 output shaft
14 angular contact bearing
15 tooth region
16 threaded region
17 third radial bore with oil tap
20 control window
Detailed Description
As shown in fig. 1, the reduction gear has a gear 5 which is connected in a rotationally fixed manner to the hollow shaft 1 on the output side of the reduction gear.
The gear wheel 5 meshes with a further toothed part, which is not shown in fig. 1, so that the gear wheel 5 forms the last gear stage of the gear unit with this toothed part.
The hollow shaft 1 is rotatably supported by a first bearing 4 received in a housing part 7 and a second bearing 6 received in the housing part 7.
For the rotationally fixed connection to the hollow shaft 1, the output shaft 13 is at least partially inserted into the hollow shaft 1. Preferably, the output shaft 13 has a toothing region 15, in particular a spline toothing region, which forms an external toothing and which is inserted into the region of the hollow shaft 1 in which the internal toothing is formed. The toothed region extends in the axial direction.
For fastening the output shaft 13, the output shaft has an internal thread on its end region facing the interior of the gear unit, into which internal thread the shaft part 3, in particular the external thread region 16 of the hollow shaft part 3, is screwed. The shaft element 3 is inserted into the hollow shaft 1 from the side of the hollow shaft 1 facing away from the output shaft 13. A step 2 is formed on the shaft element 3, against which the hollow shaft 1 rests.
The region covered by the hollow shaft 1 in the axial direction, viewed in the axial direction, completely comprises the region covered in the axial direction by the external thread region 16 and the corresponding internal thread region of the output shaft 13. Thus, the threaded connection between the shaft part 3 and the output shaft 13 is arranged inside the hollow shaft 1.
Likewise, the area covered by the gear 5 in the axial direction includes the area covered by the threaded connection in the axial direction.
The output shaft 13 is rotatably supported by an angular contact bearing 14, an inner ring of which is pressed against a step portion of the output shaft 13. The outer ring of the angular contact bearing 14 is pressed axially against the intermediate part 8, which is pressed by screws against the housing part 7 of the gear unit.
Here, a bearing 6 for supporting the hollow shaft 1 is received in a bearing receiving bore of a housing part 7 of the gear unit. The intermediate piece has a centering, in particular a centering collar and/or a centering flange, with which the intermediate piece is centered at the bearing receiving bore.
On the side of the intermediate piece 8 facing away from the housing part 7 of the gear unit, a flange part 12 is provided, which is connected to the intermediate piece 8 by means of screws and receives an angular contact bearing 14.
A shaft sealing ring is received in the intermediate piece 8, which shaft sealing ring seals against the output shaft 13.
Furthermore, a shaft sealing ring 9 is received in the intermediate piece 8, which seals against the hollow shaft 1.
As shown in fig. 2, the angular contact bearing 14, together with the intermediate part 8, the flange part 12 and the output shaft 13, can be arranged on a reduction gear designed as a reversing gear. Thus, high axial forces can be absorbed on the load side and can be conducted away via the housing part 7.
As shown in fig. 3, the angular contact bearing 14, together with the intermediate part 8, the flange part 12 and the output shaft 13, can alternatively be arranged on a reduction gear designed as a parallel shaft transmission. For this purpose, high axial forces can therefore be absorbed on the load side and can be transmitted out via the housing part 7.
As shown in the drawing, the radial bore 10 is closed by a vent valve. A pressure equalization between the interior of the retarder and the surroundings can thus be achieved. The exhaust valve may be implemented as a pressure equalization element.
As shown in fig. 2 and 3, the radially through-opening is closed by a control window 20, in particular an oil observation window, on the flange part 12. Thus, the oil level can be monitored.
For the injection of oil, it is possible to use an opening closed by the control window 20 after the removal of the control window 20 or the radial hole 10 after the removal of the exhaust valve.
The oil level in the region of the angular contact bearing 14 can therefore be kept at a defined level and can be monitored.
Instead of oil, other lubricants, such as grease or grease, can also be provided.
Due to the shaft sealing ring 9 received in the intermediate piece 8, a different lubricant can be used inside the gear unit than for the angular contact bearing 14, in particular for the gear wheel 5. In this way, an optimization of the lubricant can be achieved.
The lubricant can be drained after the oil tap has been removed through the third radial bore 17 which is closed off by the oil tap.
In other embodiments according to the invention, the housing part 7 is made of two or more parts, which are connected, for example, by screws and/or by welding.
Claims (20)
1. A reduction gear having a housing part and a hollow shaft,
a bearing is received in the housing part, said bearing rotatably supporting the hollow shaft,
it is characterized in that the preparation method is characterized in that,
the intermediate piece is connected to the housing part,
the flange part is connected to the intermediate part on the side of the intermediate part facing away from the housing part,
an angular contact bearing is received in the flange member,
the angular contact bearing rotatably supports the output shaft,
the output shaft has an external toothing which is inserted into the internal toothing of the hollow shaft, so that the output shaft is connected to the hollow shaft in a rotationally fixed manner,
the shaft part has an external thread region which is screwed into an internal thread region of the output shaft,
a step is formed on the shaft part, against which the hollow shaft rests.
2. A decelerator according to claim 1, wherein the angular contact bearings are axial bearings.
3. The gear unit according to claim 1, characterized in that the output shaft is embodied as a hollow shaft.
4. A reducer according to claim 1, in which the external teeth of the output shaft are splined teeth.
5. A decelerator according to any one of claims 1 to 4,
it is characterized in that the preparation method is characterized in that,
the area covered by the output shaft in the axial direction overlaps with the area covered by the hollow shaft in the axial direction,
the area covered by the hollow shaft in the axial direction includes an area covered by the external teeth portion in the axial direction,
wherein the axial direction is parallel to the direction of the rotational axis of the hollow shaft.
6. A decelerator according to any one of claims 1 to 4,
it is characterized in that the preparation method is characterized in that,
the area covered by the output shaft and the shaft member together in the axial direction includes an area covered by the hollow shaft in the axial direction,
wherein the axial direction is parallel to the direction of the rotational axis of the hollow shaft.
7. A decelerator according to any one of claims 1 to 4,
it is characterized in that the preparation method is characterized in that,
the output shaft, the hollow shaft and the shaft part are oriented coaxially with one another.
8. A reducer according to claim 7, characterised in that the shaft member is embodied as a hollow shaft.
9. A decelerator according to any one of claims 1 to 4,
it is characterized in that the preparation method is characterized in that,
a shaft nut is screwed onto the other externally threaded region of the shaft part, which shaft nut contacts the hollow shaft, wherein the shaft nut serves as a locking nut.
10. A decelerator according to any one of claims 1 to 4,
it is characterized in that the preparation method is characterized in that,
the inner race of the angular contact bearing rests on the step of the output shaft.
11. A decelerator according to any one of claims 1 to 4,
it is characterized in that the preparation method is characterized in that,
the outer race of the angular contact bearing is received in the flange member and rests on the intermediate member.
12. A decelerator according to any one of claims 1 to 4,
it is characterized in that the preparation method is characterized in that,
a shaft sealing ring is received in the intermediate piece, which shaft sealing ring seals against the hollow shaft.
13. A decelerator according to claim 12 wherein the decelerator is provided with,
it is characterized in that the preparation method is characterized in that,
a further shaft sealing ring is received in the intermediate piece, which seals against the output shaft.
14. A decelerator according to any one of claims 1 to 4,
it is characterized in that the preparation method is characterized in that,
the gear of the reduction gear is fitted onto the hollow shaft and connected to the hollow shaft in a rotationally fixed manner.
15. A decelerator according to any one of claims 1 to 4,
it is characterized in that the preparation method is characterized in that,
a radial bore is arranged in the flange part, in which radial bore a pressure compensation element is arranged.
16. A decelerator according to claim 15, wherein the pressure balancing element is an exhaust valve.
17. A decelerator according to claim 15 wherein the decelerator is provided with,
it is characterized in that the preparation method is characterized in that,
a further radial bore, which is spaced apart from the radial bore in the circumferential direction and in which a transparent window is received, is formed in the flange part,
the transparent window acts as an oil viewing window.
18. A decelerator according to any one of claims 1 to 4,
it is characterized in that the preparation method is characterized in that,
the angular contact bearing is configured as a tapered roller bearing or a barrel roller bearing.
19. A decelerator according to any one of claims 1 to 4,
it is characterized in that the preparation method is characterized in that,
the intermediate part has a centering collar which rests against a bearing receptacle of the bearing of the hollow shaft.
20. A decelerator according to any one of claims 1 to 4,
it is characterized in that the preparation method is characterized in that,
the reducer is a reversing transmission device, so that the axial force input at the load side is perpendicular to the rotation axis of the input shaft,
or
The speed reducer is a parallel shaft transmission such that the axial force input on the load side is parallel to the rotational axis of the input shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121105255.6U CN214743198U (en) | 2021-05-20 | 2021-05-20 | Speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121105255.6U CN214743198U (en) | 2021-05-20 | 2021-05-20 | Speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214743198U true CN214743198U (en) | 2021-11-16 |
Family
ID=78624681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121105255.6U Active CN214743198U (en) | 2021-05-20 | 2021-05-20 | Speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214743198U (en) |
-
2021
- 2021-05-20 CN CN202121105255.6U patent/CN214743198U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7485065B2 (en) | Producing and maintaining a desired bearing preload in a differential mechanism | |
| NO753606L (en) | ||
| JP4817129B2 (en) | Valve drive device | |
| JP2015020707A (en) | Wheel bearing device with built-in type in-wheel motor | |
| JP2019504592A (en) | Actuator for connection to the adjusting shaft of an internal combustion engine, in particular for adjusting the expansion stroke and / or compression ratio | |
| NO171327B (en) | DEVICE FOR COAXIAL, TURN-RELIABLE AND AXIALLY LOCKABLE CONNECTION BETWEEN A DRIVE AND ENGINE DRIVE SHAFT | |
| JP4583033B2 (en) | Cross pin holding device for differential device | |
| CN214743198U (en) | Speed reducer | |
| US9169916B2 (en) | Power takeoff unit for automobile | |
| JPH109259A (en) | Bearing unit for supporting pinion shaft of differential gear | |
| US8689657B2 (en) | Axially compact support for a gear within a gearbox | |
| EP1239191B1 (en) | Differential unit | |
| US20230130289A1 (en) | Rotary Bearing and Gearbox | |
| US6200241B1 (en) | Differential and drive pinion assembly | |
| CN115451105A (en) | Speed reducer with housing part and hollow shaft | |
| US20060035746A1 (en) | Drive shaft assembly and method of separation | |
| JPS62274160A (en) | Automatic transmission for vehicle | |
| CN111853209A (en) | Transmission with prestressed transmission housing wall | |
| US20140260743A1 (en) | Wheel driving apparatus | |
| WO2010082628A1 (en) | Traveling unit for construction machines | |
| CN113994114B (en) | Gear motor with speed reducer, motor, adapter and bellows coupling | |
| CN113906243B (en) | Speed reducer with housing part, shaft, first cover part and second cover part | |
| EP1837559A1 (en) | System for assembling transmission bearings | |
| CN111480022A (en) | Engagement device | |
| CN220749007U (en) | Speed reducer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |