reducer
By introducing an oil slinger ring and an oil separator into the reducer, the problem of poor oil supply to the lubrication parts was solved, achieving efficient and buffered oil supply, simplifying manufacturing and reducing material consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SEW- IND GEARS TIANJIN CO LTD
- Filing Date
- 2024-11-29
- Publication Date
- 2026-05-29
AI Technical Summary
The existing reducer's lubrication points are difficult to supply lubricant efficiently, resulting in poor lubrication performance.
An oil slinger ring and an oil separator are introduced into the reducer. The oil slinger ring throws the oil out and delivers it to the oil collection area through the notch and cavity. The oil is supplied to the lubrication parts through the holes and channels. The oil collection pool is formed by the separator and the recess, realizing the buffered supply of oil.
It achieves efficient and buffered oil supply to lubrication points, improves lubrication effect, simplifies manufacturing process and reduces material consumption.
Smart Images
Figure CN122107095A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a speed reducer. Background Technology
[0002] As is well known, a speed reducer has components that need to be lubricated, and therefore has lubrication points, such as bearings and the meshing areas of teeth that mesh with each other. Summary of the Invention
[0003] Therefore, the object of the present invention is to construct a speed reducer with an improved lubricant supply.
[0004] According to the present invention, this objective is achieved by a speed reducer with the features given in claim 1.
[0005] Regarding the speed reducer, an important feature of the present invention is that the speed reducer has a housing component and an oil slinger ring connected to the shaft of the speed reducer in a manner that prevents relative rotation.
[0006] In particular, the shaft is the input shaft of the reducer.
[0007] In particular, the reducer is partially filled with oil, and the oil slinger ring is partially immersed in the oil.
[0008] The housing component has a through-hole.
[0009] In this configuration, a hollow separator / catch is fixed to the housing component on the side facing away from the oil slinger ring.
[0010] The notch leads to the cavity of the separator.
[0011] The cavity opens onto a spatial region on its side away from the housing component, which is surrounded by the housing component and a cover fixed to the housing component.
[0012] The advantage here is that the oil is sprayed upwards and conveyed through the gaps and cavities by means of the oil slinger ring, so as to reach the oil collection area, from which oil can be supplied to the lubrication parts of the reducer.
[0013] The cavity has only two openings facing the external environment of the separator. Here, the first opening leads into a notch in the housing component, while the second opening leads into the space area enclosed by the cover and housing component in a manner that forms a housing.
[0014] In an advantageous design, oil ejected from the oil slinger ring can reach the space region through the notch and the cavity. The advantage here is that oil can accumulate in this space region and can be supplied from there to the lubrication points of the reducer.
[0015] In an advantageous design, one or more holes and / or channels are machined into the housing component, which, on the one hand, particularly at their first end, open into a spatial region, and on the other hand, particularly at their second end, open to the various lubrication points of the reducer, particularly the meshing areas of bearings and / or teeth. The advantage here is that lubrication points can be supplied with oil in a buffered manner.
[0016] In an advantageous design, the housing component has a recess on the surface facing the cover, which acts as an oil collection basin, specifically surrounding the separator. The advantage here is that oil reaching the spacer area through the separator can be collected in the recess and thus buffered, allowing oil to be supplied to the lubrication points.
[0017] In an advantageous design, the separator has a wall region, particularly surrounding the cavity and / or notch, which is connected to and / or integrally constructed with a flange region surrounding the cavity and / or notch. The advantage here is that simple, cost-effective manufacturing is possible and an oil seal can be established. Specifically, the space region of the separator is separated by the cavity and notch, and thus also separated from the remaining oil-filled internal cavity region of the reducer. Oil reaches the remaining internal cavity of the reducer, including the toothed components, only through the lubrication points from the oil collection area, i.e., from the recess.
[0018] In an advantageous design, the flange region is placed on and fixed to the housing component, particularly using a fastening screw screwed into a threaded hole in the housing component. Specifically, the screw head of the fastening screw presses the flange region against the housing component. The advantage here is that the separator can be stably fixed and can be easily sealed relative to the housing component. In particular, a seal can be arranged between the flange region and the housing component.
[0019] In an advantageous design, the net width of the separator cavity decreases as the distance from the housing increases. This is advantageous because the separator has a tapered shape, specifically designed to taper gradually from bottom to top.
[0020] In an advantageous design, the wall thickness of the separator's wall region is independent of its distance from the housing component. This advantage is particularly due to the small weight, low material consumption, and ease of manufacturing.
[0021] In an advantageous design, the flange region protrudes from the wall region. The advantage here is that the flange region thus rests against the surface of the housing element and can be easily sealed.
[0022] In an advantageous design, the oil slinger ring has an inner ring, an outer ring, and a support strip. The advantage here is that the oil slinger ring requires very little material and has minimal axial elongation because the inner and outer rings are arranged in the same axial position.
[0023] In an advantageous design, the inner and outer rings are concentrically oriented. The advantage here is that the weight of the oil slinger rings is balanced, thus posing only a small additional load to the reducer.
[0024] In an advantageous design, the inner ring's axis is coaxial with the outer ring's axis. The advantage here is that the weight of the oil slinger ring is balanced, thus posing only a small additional load to the reducer.
[0025] In an advantageous design, the blade region is mounted or formed on the outer ring, and the blade region is connected to or integrally formed with the support strip, which in turn is connected to or integrally formed with the inner ring. The advantage here is that it enables simple, material-saving manufacturing while still allowing for the delivery of as much oil as possible.
[0026] In an advantageous design, the axial width of the blade region increases with increasing radial distance from the rotation axis of the oil slinger ring, and in particular, increases strictly monotonically.
[0027] In particular, the area covered circumferentially by the corresponding support bar includes the area covered circumferentially by the blade area connected to the corresponding support bar. The advantage here 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 design, the support bars are spaced apart from each other circumferentially, especially evenly. This allows for uniform distribution of oil flow around the perimeter.
[0029] In an advantageous design, the support bars extend radially. The advantage here is that the inner and outer rings can be connected simply and material-savingly, as the support bars serve both a mechanical connection and oil delivery function.
[0030] In an advantageous design, the blade regions extend radially. The advantage here is that the oil can be centrifugally ejected in the tangential direction.
[0031] In an advantageous design, each support bar has an angle of less than 90° relative to the axis of rotation of the oil slinger ring, at least within the radial range covered by the outer ring. The advantage here is that the slinged oil is centrifugally thrown into the spatial angular region where the notch in the housing component is located.
[0032] In an advantageous design, the oil slinger ring, together with the outer ring, inner ring, support strip, and blade area, is constructed as a single piece, particularly as a plastic injection molded part. The advantage here is that simple and cost-effective manufacturing can be achieved.
[0033] Further advantages are provided by the dependent claims. The invention is not limited to the combination of features of the claims. For those skilled in the art, particularly for purposes proposed and / or proposed by comparison with the prior art, other reasonable combinations of features of the claims and / or individual claims and / or description features and / or drawings are possible. Attached Figure Description
[0034] The invention will now be explained in detail with the aid of schematic diagrams:
[0035] Figure 1 A cross-sectional view of a region of a speed reducer according to the invention is shown, the speed reducer having an oil slinger ring 1, an oil separator 5 and a speed reducer cover 6.
[0036] Figure 2 An oblique view of one area of the reducer is shown, in which the oil separator 5 is shown in dissection and the cover 6 is not shown.
[0037] Figure 3 An oblique view of oil separator 5 is shown.
[0038] Figure 4 An oblique view of the oil slinger ring 1 as seen from the first viewing direction is shown.
[0039] Figure 5 This is a perspective view of the oil slinger ring 1 from a second viewpoint.
[0040] List of reference numerals in the attached diagram:
[0041] 1. Oil slinger ring
[0042] 2 bearings
[0043] 3 Input axis
[0044] 4. Housing components
[0045] 5. Oil separator
[0046] 6 lids
[0047] 30 Flange area
[0048] 31 Wall area
[0049] 40 Outer Ring
[0050] 41 Support bar
[0051] 42 Inner Ring
[0052] 43. Blade area Detailed Implementation
[0053] As shown in the figure, the reducer has a housing 4, in which a bearing 2 is housed for rotatably supporting the input shaft 3.
[0054] The oil slinger ring 1 and the input shaft 3 are connected in a manner that prevents relative rotation, particularly by means of a key connection. Preferably, the input shaft 3 is the fastest rotating shaft of the reducer.
[0055] The rotation axis of the oil slinger ring 1 is oriented horizontally or at an angle of less than 30° to the horizontal plane. When the oil slinger ring 1 rotates, the oil is centrifugally thrown vertically upward by the oil slinger ring 1, especially towards the notch that penetrates the housing 4. This notch is surrounded by the separator 5 on the outside of the housing 4, especially on the top side, which is tightened to the top side of the housing 4 by means of screws.
[0056] The separator 5 itself is designed to be hollow, so that oil passing through the notch can also pass through the notch of the oil slinger ring 1. However, because the separator 5 is sealed to the housing 4, and the oil passing through the separator 5 can no longer flow back through the notch of the housing 4 after impacting the outside of the housing 4, the oil accumulates on the top side of the housing 4, especially in the oil collection pool constructed on the top side, and particularly in the recess on the outside of the housing 4 that serves as the oil collection pool.
[0057] The cover 6, placed on the housing 4, covers the following space area, in which the separator 5 and the oil collection tank are arranged.
[0058] If the oil passes through the notch at a sufficiently high speed, it will hit the inside of the cover 6 and then drip down, especially into the oil collection pool.
[0059] The holes formed in the housing 4 act as channels that transport oil from the oil collection pool to the parts to be lubricated, such as the meshing areas of bearings or teeth.
[0060] The separator 5 has a flange region 30 protruding from the wall region 31 surrounding the notch of the separator 5. The flange region is attached to the housing 4 and fixed to the housing 4 by screws screwed into the threaded holes of the housing 4.
[0061] The surrounding wall region 31 is constructed in an inclined or conical shape, such that the net diameter of the hollow separator 5 decreases with increasing distance from the housing member 4. In particular, the separator 5 thus gradually tapers with increasing distance from the housing member 4. However, preferably, the wall thickness of the wall region 31 is independent of the distance from the housing member 4, i.e., it is constant everywhere.
[0062] The oil slinger ring 1 has an outer ring 40 and an inner ring 42 arranged concentrically with the outer ring 40, wherein the ring axis of the outer ring 40 is oriented coaxially with the ring axis of the inner ring 42.
[0063] The inner ring 42 is arranged radially inside the outer ring 40.
[0064] The radially oriented support bars 41, spaced apart from each other in the circumferential direction relative to the rotation axis of the oil slinger ring 1, together with the blade region 43, connect the inner ring 42 and the outer ring 40.
[0065] For this purpose, the support strip 41 is connected to the inner ring 42, in particular by form-locking and / or material-locking connection, especially by bonding or welding.
[0066] The blade region 43 and the support bar 41 are connected in a radial range covered by the outer ring 40 and are also connected to the outer ring 40 respectively.
[0067] The axial width of each blade region 43 increases with the increase of the radial distance because the support bar 41 is not perpendicular to the rotation axis of the oil slinger ring 1 at least in the radial range covered by the outer ring 40, but at an angle between 5° and 30° relative to the rotation axis of the oil slinger ring 1.
[0068] Therefore, the oil is not precisely centrifugally thrown out radially when the oil slinger ring rotates, but is centrifugally thrown out at a corresponding angle, so that the oil passes through the notch and reaches the cover 6 according to the oil speed and drips from the cover into the oil collection pool.
[0069] Preferably, all blade regions 43 and support bars 41 are arranged on the same axial side of the outer ring 40.
[0070] The separator 5 is made of metal sheet as a bent or formed part.
[0071] In other embodiments according to the invention, the separator 5 is not made of metal, but is implemented as a plastic injection molded part.
Claims
1. A speed reducer, The reducer has a housing and an oil slinger ring that is connected to the reducer shaft in a non-rotatable manner. In particular, the shaft is the input shaft of the reducer. In particular, the reducer is partially filled with oil, and the oil slinger ring is partially immersed in the oil. Its features are, The housing component has a through-hole. On the side of the housing component facing away from the oil slinger ring, a hollow separator is fixed to the housing component. The notch leads to the cavity of the separator. The cavity opens onto the space region surrounded by the housing and the cover fixed to the housing on its side away from the housing component.
2. The reducer according to claim 1, Its features are, Oil ejected from the oil slinger ring can reach the spatial region through the notch and cavity.
3. The speed reducer according to any one of the preceding claims, Its features are, One or more holes and / or channels are formed in the housing component, which on the one hand, particularly at their first end, lead to a spatial region, and on the other hand, particularly at their second end, lead to the corresponding lubrication parts of the reducer, particularly the meshing areas of bearings and / or teeth.
4. The speed reducer according to any one of the preceding claims, Its features are, On the surface of the housing component facing the cover, the housing component has a recess that functions as an oil collection pool, which in particular surrounds the separator.
5. The speed reducer according to any one of the preceding claims, Its features are, The separator has a wall region, particularly surrounding the cavity and / or the notch, which is connected to and / or integrally constructed with a flange region surrounding the cavity and / or the notch.
6. The speed reducer according to any one of the preceding claims, Its features are, The flange area is attached to and fixed to the housing component, especially by means of a fastening screw screwed into a threaded hole in the housing component, and in particular, the screw head of the fastening screw presses the flange area against the housing component.
7. The speed reducer according to any one of the preceding claims, Its features are, The net width of the separator cavity decreases as the distance from the housing increases.
8. The speed reducer according to any one of the preceding claims, Its features are, The wall thickness of the separator's wall region is independent of its distance from the housing component.
9. The speed reducer according to any one of the preceding claims, Its features are, The flange region protrudes from the wall region.
10. The speed reducer according to any one of the preceding claims, Its features are, The oil slinger ring has an inner ring, an outer ring, and a support bar.
11. The speed reducer according to any one of the preceding claims, Its features are, The inner and outer rings are concentrically oriented. And / or, The inner ring's axis is oriented coaxially with the outer ring's axis.
12. The speed reducer according to any one of the preceding claims, Its features are, The blade region is mounted or formed on the outer ring, and the blade region is connected to or integrally formed with one or more support bars, which are connected to or integrally formed with the inner ring.
13. The speed reducer according to any one of the preceding claims, Its features are, The axial width of the blade region increases with the increase of the radial distance from the rotation axis of the oil slinger ring, and in particular, increases strictly monotonically. In particular, the area covered by the corresponding support bar in the circumferential direction includes the area covered by the blade area connected to the corresponding support bar in the circumferential direction.
14. The speed reducer according to any one of the preceding claims, Its features are, The support bars are spaced apart from each other in the circumferential direction. And / or, The support bars extend radially. And / or, The width of each support bar in the tangential direction is independent of the radial distance. And / or, The blade regions extend in the radial direction. And / or, The support bar has an angle of less than 90° relative to the axis of rotation of the oil slinger ring, at least within the radial range covered by the outer ring.
15. The speed reducer according to any one of the preceding claims, Its features are, The oil slinger ring comprises an outer ring, an inner ring, a support strip, and a blade area, and is constructed as a single piece, particularly as an integrally formed plastic injection molded part.