Speed reducer
By introducing an oil slinger and an oil separator into the reducer, the problem of uneven oil supply in the lubrication parts is solved, efficient and uniform lubrication effect is achieved, and the manufacturing process is simplified.
Patent Information
- Application Number
- CN202422949968.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-29
AI Technical Summary
It is difficult to efficiently supply lubricant to the lubrication parts of existing reducers, resulting in poor lubrication effect.
An oil slinger and oil separator are introduced into the reducer. The oil is slinged out through the oil slinger and transported to the oil collection area. The oil is supplied to the lubrication parts through holes and channels. The oil collection pool and separator are combined to achieve buffered oil supply.
The invention realizes efficient and uniform lubrication of the lubricated parts, improves the lubrication effect, simplifies the manufacturing process and reduces material consumption.
Smart Images
Figure CN223331111U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a reducer. Background Art
[0002] As is known, reduction gears have components to be lubricated and therefore lubrication points, such as bearings and meshing areas of meshing toothings. Utility Model Content
[0003] The object of the present invention is therefore to provide a reduction gear with an improved lubricant supply.
[0004] According to the present invention, this object is achieved by a speed reducer according to the following features.
[0005] In terms of the reducer, the important feature of the utility model is that the reducer has a housing and an oil slinger connected to the shaft of the reducer in a non-rotatable manner.
[0006] In particular, the shaft is the input shaft of the reducer,
[0007] Especially wherein the reducer is partially filled with oil and the oil slinger is partially immersed in the oil,
[0008] The shell has a through-going notch.
[0009] In this case, a hollow separator / catch is fastened to the housing part on the side of the housing part facing away from the oil slinger.
[0010] The notch opens into the cavity of the separator.
[0011] In this case, the cavity opens on its side facing away from the housing part into a spatial region which is surrounded by the housing part and a cover fastened to the housing part.
[0012] The advantage here is that the oil is sprayed upwards by means of the oil slinger and conveyed through the recesses and cavities in order to reach the oil collecting area, from which the oil can be supplied to lubrication points of the gear unit.
[0013] The cavity has only two openings towards the external environment of the separator. Here, the first opening leads into the breach of the housing part, and the second opening leads into the spatial region surrounded by the cover and the housing part in a manner forming a housing.
[0014] In an advantageous design, the oil thrown out from the oil slinger can reach the space region through the gap and through the cavity. Advantageously, oil can accumulate in the space region and can be supplied to the lubrication point of the reducer from the space region.
[0015] In an advantageous embodiment, one or more holes and / or channels are formed in the housing part, which, on the one hand, in particular at their first end, open into the space and, on the other hand, in particular at their second end, open to the respective lubrication points of the reducer, in particular the meshing areas of the bearings and / or the toothing. This has the advantage that the lubrication points can be supplied with oil in a damped manner.
[0016] In an advantageous embodiment, the housing part has a recess acting as an oil sump on its surface facing the cover, which recess particularly surrounds the separator. This has the advantage that oil entering the space via the separator can be collected in the recess and thus forms a buffered oil quantity from which the lubrication points can be supplied with oil.
[0017] In one advantageous embodiment, the separator includes a wall region, particularly surrounding the cavity and / or the recess, which is connected to and / or integrally formed with a flange region surrounding the cavity and / or the recess. This advantageously allows for simple and cost-effective manufacturing and provides oil-tightness. In particular, the separator separates the spatial region from the cavity and the recess and, thus, from the remaining interior region of the reducer, which is partially filled with oil. Oil flows from the oil collecting region, i.e., the recess, into the remaining interior region of the reducer, which contains the toothed components, solely via the lubrication point.
[0018] In an advantageous embodiment, the flange area is placed on the housing part and fixed thereto, in particular by means of a fastening screw screwed into a threaded hole in the housing part, in particular the screw head of the fastening screw pressing the flange area against the housing part. This has the advantage that the separator can be fixed stably and can be easily sealed relative to the housing part. In particular, a seal can be arranged between the flange area and the housing part.
[0019] In an advantageous embodiment, the clear width of the cavity of the separator decreases as the distance from the housing member increases. Advantageously, the separator has a conical shape, ie, is particularly designed to taper from bottom to top.
[0020] In an advantageous design, the wall thickness of the wall area of the separator is independent of the distance from the housing part. Advantageously, in particular, due to the low weight, the material consumption is low and simple manufacture can be achieved.
[0021] In an advantageous embodiment, the flange region protrudes from the wall region. Advantageously, the flange region rests against the surface of the housing part and can be easily sealed.
[0022] In an advantageous embodiment, the oil slinger has an inner ring and an outer ring and a support strip. The advantage here is that the oil slinger requires very little material and has a small axial extension, because the inner ring and the outer ring are arranged at the same axial position.
[0023] In an advantageous embodiment, the inner ring and the outer ring are oriented concentrically with respect to one another. This has the advantage that the oil slinger is weight-balanced and thus represents only a slight additional load on the reducer.
[0024] In an advantageous embodiment, the ring axis of the inner ring is coaxially aligned with the ring axis of the outer ring. This has the advantage that the oil slinger is weight-balanced and thus only represents a small additional load on the reducer.
[0025] In an advantageous embodiment, the blade area is mounted or formed on the outer ring, the blade area is connected to the support strip or is formed integrally with the support strip, and the support strip is connected to the inner ring or is formed integrally with the inner ring. This has the advantage that a simple, material-saving production can be achieved while still being able to transport as much oil as possible.
[0026] In an advantageous embodiment, the axial width of the blade region increases with increasing radial distance from the axis of rotation of the oil slinger, in particular increases strictly monotonically.
[0027] In particular, the area covered by the corresponding support strip in the circumferential direction includes the area covered by the blade area connected to the corresponding support strip in the circumferential direction. The advantage is that the oil volume received in the blade area increases radially outward and is therefore subjected to the strongest possible centrifugal force.
[0028] In an advantageous embodiment, the support strips are spaced apart from one another in the circumferential direction, in particular evenly spaced apart. This has the advantage that the oil supply can be evenly distributed over the circumference.
[0029] In an advantageous design, the support strips extend in radial direction respectively. Advantageously, the inner ring and the outer ring can be connected simply and material-savingly, because the support strips are mechanically connected on the one hand and oil transported on the other hand.
[0030] In an advantageous embodiment, the blade regions extend in the radial direction respectively. The advantage is that the oil can be centrifugally thrown out in the tangential direction.
[0031] In an advantageous embodiment, the support strips, at least in the radial range covered by the outer ring, have an angle of less than 90° relative to the axis of rotation of the oil slinger. This has the advantage that the slinged oil is centrifugally ejected into the spatial angular region in which the recesses of the housing are located.
[0032] In an advantageous embodiment, the oil slinger ring together with the outer ring, the inner ring and the support strips and the blade area is formed in one piece, in particular in one piece, in particular as a plastic injection-molded part. This has the advantage that simple and cost-effective production can be achieved.
[0033] The present invention is not limited to the above-mentioned feature combinations. For those skilled in the art, especially when considering the purpose and / or the purpose proposed by comparison with the prior art, other reasonable combinations of the above-mentioned feature combinations and / or individual features and / or features described below and / or features of the accompanying drawings may be obtained. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] The present invention will now be explained in detail with the aid of schematic diagrams:
[0035] Figure 1 The figure shows a cross-sectional view of a region of a reducer according to the present invention, which includes an oil slinger 1 , an oil separator 5 and a reducer cover 6 .
[0036] Figure 2 An oblique view of a region of the reduction gear is shown, wherein the oil separator 5 is shown exploded and the cover 6 is not shown.
[0037] Figure 3 An oblique view of the oil separator 5 is shown.
[0038] Figure 4 The oil slinger 1 is shown in an oblique view from a first viewing direction.
[0039] Figure 5 The oil slinger 1 is shown in an oblique view from a second viewing direction.
[0040] List of reference numerals:
[0041] 1 Oil slinger
[0042] 2 bearings
[0043] 3 Input shaft
[0044] 4 housing parts
[0045] 5. Oil separator
[0046] 6 Cover
[0047] 30 flange area
[0048] 31 Wall area
[0049] 40 Outer Ring
[0050] 41 support bars
[0051] 42 Inner Ring
[0052] 43 blade area DETAILED DESCRIPTION
[0053] As shown in the figure, the reduction gear has a housing part 4 in which a bearing 2 for rotatably supporting an input shaft 3 is accommodated.
[0054] The oil slinger 1 is connected to the input shaft 3 in a rotationally fixed manner, in particular by means of a key connection. Preferably, the input shaft 3 is the fastest rotating shaft of the reducer.
[0055] The axis of rotation of the oil slinger 1 is oriented horizontally or at an angle of less than 30° to the horizontal. During the rotational movement of the oil slinger 1, the oil is centrifugally spun vertically upward by the oil slinger 1, in particular in the direction of a recess in the housing part 4 extending through the housing part 4. This recess is surrounded on the outside of the housing part 4, in particular on the top side, by a separator 5 which is screwed to the top side of the housing part 4.
[0056] The separator 5 itself is designed to be hollow, so that the oil passing through the gap can also pass through the gap of the oil slinger 1. However, because the separator 5 is sealed to the housing part 4 and the oil passing through the separator 5 can no longer flow back through the gap of the housing part 4 after hitting the outer side of the housing part 4, the oil accumulates on the top side of the housing part 4, especially in the oil collecting pool formed on the top side, especially in the recess on the outer side of the housing part 4 that serves as an oil collecting pool.
[0057] A cover 6 placed on the housing part 4 covers the spatial region in which the separator 5 and the oil collecting sump are arranged.
[0058] If the oil passes through the aperture at a sufficiently high speed, the oil hits the inside of the cover 6 and then drips, in particular into an oil collecting sump.
[0059] The holes formed in the housing part 4 serve as channels that convey the oil from the oil sump to the locations to be lubricated, such as bearings or toothed meshing areas.
[0060] The separator 5 has a collar region 30 which projects from a wall region 31 of the separator 5 surrounding the recess, the collar region resting on the housing part 4 and being fixed thereto by means of screws which are screwed into threaded holes in the housing part 4 .
[0061] The surrounding wall region 31 is designed to be inclined or conical, so that the clear diameter of the hollow separator 5 decreases with increasing distance from the housing part 4. In particular, the separator 5 thus tapers with increasing distance from the housing part 4. However, the wall thickness of the wall region 31 is preferably independent of the distance from the housing part 4, i.e., in particular, is constant everywhere.
[0062] The oil slinger 1 has an outer ring 40 and an inner ring 42 which is arranged concentrically with respect to the outer ring 40 , wherein in particular the ring axis of the outer ring 40 is aligned coaxially with the ring axis of the inner ring 42 .
[0063] The inner ring 42 is arranged radially inwardly of the outer ring 40 .
[0064] Radially oriented support webs 41 , which are spaced apart from one another in the circumferential direction relative to the axis of rotation of the oil slinger 1 , connect the inner ring 42 to the outer ring 40 together with the blade regions 43 .
[0065] For this purpose, the support strips 41 are each connected to the inner ring 42 , in particular connected in a form-fitting and / or materially bonding manner, in particular adhesively bonded or welded.
[0066] The blade regions 43 are connected to the support strips 41 in the radial area covered by the outer ring 40 and are also each connected to the outer ring 40 .
[0067] The axial width of each blade area 43 increases with increasing radial distance. This is because the support strips 41 are not perpendicular to the rotation axis of the oil slinger 1 at least in the radial range covered by the outer ring 40, but form an angle between 5° and 30° relative to the rotation axis of the oil slinger 1.
[0068] Therefore, when the oil slinger rotates, the oil is not centrifugally spun out exactly in the radial direction, but at a corresponding angle, so that the oil passes through the gap and reaches the cover 6 according to the speed of the oil and drips from the cover into the oil collecting tank.
[0069] Preferably, all blade areas 43 and support strips 41 are arranged on the same axial side of the outer ring 40 .
[0070] The separator 5 is produced from sheet metal as a punched or bent part or as a formed part.
[0071] In other exemplary embodiments according to the present invention, the separator 5 is not made of metal but is embodied as a plastic injection-molded part.
Claims
1. A reducer, The reducer comprises a housing and an oil slinger connected to the shaft of the reducer in a non-rotatable manner. The shaft is the input shaft of the reducer. The reducer is partially filled with oil, and the oil slinger is partially immersed in the oil. It is characterized by: The shell has a through-cut notch. On the side of the housing part facing away from the oil slinger, a hollow separator is fastened to the housing part. The notch leads to the cavity of the separator. The cavity opens on its side facing away from the housing part into a spatial region enclosed by the housing part and a cover fastened to the housing part.
2. The reducer according to claim 1, It is characterized by: The oil flung out from the oil slinger can reach the space region through the notch and the cavity.
3. The reducer according to claim 1 or 2, It is characterized by: One or more holes and / or channels are formed in the housing part, which holes and / or channels open at their first end into the spatial area and at their second end into corresponding lubrication points of the reducer, including the bearings and the meshing areas of the toothing.
4. The reducer according to claim 1 or 2, It is characterized by: On the surface of the housing part facing the cover, the housing part has a recess which acts as an oil collecting sump and surrounds the separator.
5. The reducer according to claim 1 or 2, It is characterized by: The separator has a wall region surrounding the cavity and / or the recess, which is connected to a collar region surrounding the cavity and / or the recess, or the wall region and the collar region are formed in one piece.
6. The reducer according to claim 5, It is characterized by: The collar region rests against the housing part and is fixed to the housing part by means of fastening screws screwed into threaded holes in the housing part, the screw heads of the fastening screws pressing the collar region against the housing part.
7. The reducer according to claim 5, It is characterized by: The clear width of the separator cavity decreases with increasing distance from the housing part.
8. The reducer according to claim 5, It is characterized by: The wall thickness of the wall region of the separator is independent of the distance from the housing part.
9. The reducer according to claim 5, It is characterized by: The flange region protrudes from the wall region.
10. The reducer according to claim 1 or 2, It is characterized by: The oil slinger has an inner ring, an outer ring and a support strip.
11. The reducer according to claim 10, It is characterized by: The inner and outer rings are oriented concentrically with each other, and / or, The ring axis of the inner ring is aligned coaxially with the ring axis of the outer ring.
12. The reducer according to claim 10, It is characterized by: The blade region is mounted or formed on the outer ring, and the blade region is connected to or formed integrally with one or more support bars, and the one or more support bars are connected to or formed integrally with the inner ring.
13. The reducer according to claim 12, It is characterized by: The axial width of the blade area increases with the radial distance from the rotation axis of the oil slinger. The area covered by the corresponding support strip in the circumferential direction includes the area covered by the blade area connected to the corresponding support strip in the circumferential direction.
14. The reducer according to claim 12, It is characterized by: The support bars are spaced apart from each other in the circumferential direction, and / or, The support bars extend in radial directions respectively. and / or, The width of each support strip in the tangential direction has nothing to do with the radial distance. and / or, The blade areas extend in radial direction, and / or, The support strips have an angle of less than 90° relative to the rotation axis of the oil slinger at least in the radial range covered by the outer ring.
15. The reducer according to claim 12, It is characterized by: The oil slinger comprises an outer ring, an inner ring, a support strip and a blade area which are integrally formed therein. The oil slinger is constructed as a plastic injection molded part.