Speed reducer with housing

Abstract

The invention relates to a speed reducer having a housing with a lower part and an upper part connected thereto, a bearing seat being formed in the upper part, the lower part having an intermediate wall, a bearing seat being formed in the intermediate wall, the intermediate wall having a plurality of platforms (8, 9, 10), a respective one of the bearing blocks is arranged and / or machined in a respective one of the plurality of platforms, the platforms being delimited from each other by blocking edges (5, 6, 7), each of which protrudes and / or protrudes from the respective one of the platforms towards the upper part.

Description

Technical Field

[0001] The invention relates to a reducer with a housing. Background Art

[0002] As is known, a speed reducer has a shaft which is rotatably supported by means of a bearing.

[0003] As the closest prior art, a machine brake is known from US 2021 / 0 071 727 A1.

[0004] A reduction gear is known from US 2021 / 0 041 017 A1.

[0005] DE 10 2021 002 929 A1 discloses a reduction gear having a housing which has a lower part and a cover part.

[0006] A system having a lubricating oil circuit is known from DE 10 2018 203 696 A1.

[0007] DE 597 396 A discloses a lubricating device for a centrifuge.

[0008] A lubricating device for a multi-stage speed reducer is known from EP 1 010 923 A2.

[0009] A parallel-shaft reducer is known from CN 1 01 799 069 A1. Summary of the invention

[0010] It is therefore an object of the present invention to improve the supply of lubricating oil to the bearings of a reduction gear.

[0011] According to the invention, this object is achieved by a reduction gear according to the features specified in claim 1 .

[0012] In terms of the reducer, an important feature of the present invention is that the reducer is constructed with a housing, the housing having a lower part and an upper part connected to the lower part,

[0013] In this case, a bearing seat is formed in the upper part, in particular a bearing seat designed as a through-hole, which is in particular for the bearing of a shaft of the reducer.

[0014] The lower part has an intermediate wall in which a bearing seat is formed, in particular a bearing seat designed as a through-hole, which is in particular for the bearing of a shaft of the reducer.

[0015] The middle wall has a plurality of platforms (8, 9, 10).

[0016] wherein a corresponding bearing seat is arranged and / or machined in a corresponding one of the platforms,

[0017] In this case, the platforms are delimited from one another and / or are spaced apart from one another by respective stop edges which project and / or protrude toward the upper part, in particular from the respective platform toward the upper part.

[0018] The advantage here is that the oil dripping or running down the inner wall is collected in the platform and guided to the bearing. In this case, it is even possible to achieve that the oil accumulates on the platform and the inclination of the platform is therefore negligible. In particular, the platform can even be designed to be flat, in particular horizontally oriented and planar. Nevertheless, the oil is guided to the bearing and the lubricant supply is thus ensured. The oil pump supplies the bearing accommodated in the upper part. The bearing accommodated in the lower part does not require a special oil line, but it is sufficient to guide the running or dripping oil to the corresponding platform and then supply the corresponding bearing.

[0019] It is essential in the invention that the housing has platforms which are arranged in a stepped waterfall / cascade manner and which act as oil reservoirs, which have successively decreasing heights, in particular successively decreasing distances from the upper part, which have retaining edges which act as overflow edges and which each have at least one corresponding bearing seat, in particular for a corresponding shaft which is rotatably supported by means of a bearing received in a bearing seat of the upper part.

[0020] In particular, the axes of rotation of the shaft rotatably supported by means of the bearing seat and the bearing received therein are parallel to one another and to the normal direction of the contact plane.

[0021] The advantage here is that the oil dripping or running down the inner wall is collected in the platform and guided to the bearing. In this case, it is even possible to achieve that the oil accumulates on the platform and the inclination of the platform is therefore negligible. In particular, the platform can even be designed to be flat, in particular horizontally oriented and planar. Nevertheless, the oil is guided to the bearing and the lubricant supply is thus ensured. The oil pump supplies the bearing accommodated in the upper part. The bearing accommodated in the lower part does not require a special oil line, but it is sufficient to guide the running or dripping oil to the corresponding platform and then supply it to the corresponding bearing.

[0022] In an advantageous embodiment, the platform is inclined relative to the bearing seat arranged in the corresponding platform, in particular at an inclination angle of less than 5°. This has the advantage that although the oil can flow away in the direction of the bearing seat and the bearing seat is therefore the deepest area of ​​the platform, according to the invention there is a retaining edge which allows the oil to accumulate and thus allows the bearing received in the bearing seat to be supplied with oil.

[0023] In an advantageous embodiment, each of the platforms is parallel to the separation plane of the housing, in particular, ignoring the inclination of the platforms relative to the separation plane, ie, in particular, parallel to the contact plane between the upper part and the lower part. The advantage here is that the retaining edge can collect oil and thus ensure the oil supply of the bearing.

[0024] In an advantageous embodiment, the individual platforms are at different distances from the separating plane. This has the advantage that the first platform, which is arranged closest to the separating plane, can supply the other platform with oil that has accumulated in the first platform and overflowed. Since a smaller bearing is arranged in the first platform than in the other platform, the corresponding bearing requires more oil than the smaller bearing. This applies to the third bearing and / or the further bearings accordingly.

[0025] In an advantageous design, a corresponding hole through the intermediate wall is machined in each platform. Advantageously, the oil flowing through the bearing then reaches the oil pool.

[0026] In an advantageous embodiment, an annular retaining edge, which projects from the respective platform toward the upper part, delimits the respective opening relative to the respective platform. This has the advantage that a maximum oil level can be achieved when oil accumulates. Preferably, the annular retaining edge projects further from the platform toward the separation plane than the retaining edge of the platform.

[0027] In an advantageous design, the corresponding platform is at a greater distance from the separation plane than the platform immediately adjacent to the corresponding platform. Advantageously, the corresponding next platform can be supplied by the corresponding platform.

[0028] In an advantageous design, an oil sump of the reducer is arranged on the side of the intermediate wall facing away from the upper part. The advantage here is that the oil flowing through the bearings received in the bearing seat of the intermediate wall flows out into the oil sump or is collected in the oil sump to be provided to the suction area of ​​the oil pump.

[0029] In an advantageous embodiment, the oil pump of the reduction gear delivers oil, in particular from an oil sump, to the bearing received in the bearing seat of the upper part.

[0030] Particularly make described oil drip downwards to corresponding platform from the bearing that is received in the bearing seat of upper part.At this advantage, particularly for the bearing that is received in upper part, can guarantee active oil supply.

[0031] In an advantageous embodiment, the intermediate wall is the outer wall of the reducer. This has the advantage that the platform can also be formed on the inner side of the outer wall of the reducer housing. Of course, the bearings accommodated in the outer wall must then be covered from the outside by means of bearing covers, which are arranged on the outside of the outer wall, and the oil must be drained from the area covered by the bearing covers into an oil sump, in particular via channels or external pipes which are arranged and / or integrated in the reducer housing accordingly, but which require additional installation space.

[0032] In an advantageous design, each platform is convexly curved. Advantageously, in particular, even when only a small amount of oil arrives in the platform, the oil flows toward the bearing seat.

[0033] In an advantageous embodiment, the angle of inclination between the tangent plane of the platform and the separating plane of the housing does not exceed 5°. The advantage here is that the small residual curvature of the platform, in particular the convexly designed platform, is less than 5°, and therefore the oil does not flow away too quickly and its heat can therefore be effectively discharged to the intermediate wall.

[0034] In an advantageous embodiment, the rotational symmetry axis of the bearing seat, in particular the rotational axis of the shaft rotatably supported by the bearing received in the bearing seat, is oriented vertically and / or perpendicularly to the separating plane. This has the advantage that the oil delivered to the upper part by the oil pump can also reach the bearing received in the lower part.

[0035] Further advantages are given by the dependent claims. The invention is not limited to the feature combinations of the claims. For a person skilled in the art, in particular from the objectives proposed and / or by comparison with the prior art, other reasonable combinations of the claims and / or the features of the individual claims and / or the features of the description and / or the features of the drawings are apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Now the present invention is described in detail according to the schematic diagram:

[0037] exist Figure 1 , a sectioned reduction gear housing is shown in an oblique view along a first viewing direction, wherein the sectioning plane is parallel to a separating plane of the reduction gear housing.

[0038] exist Figure 2 The cut-away reduction gear housing is shown in an oblique view along a second viewing direction. DETAILED DESCRIPTION

[0039] As shown in the figures, the reduction gear housing has a lower part 1 , onto which an upper part 15 , in particular serving as a cover for the lower part 1 , is placed and connected, in particular by means of screws.

[0040] The shaft of the reducer is rotatably supported by bearings which can be received in bearing seats (11, 12, 13, 14) of the lower part 1 and the upper part 15. The toothed parts can be connected to the shafts in a rotationally fixed manner and mesh with each other.

[0041] exist Figure 1 and Figure 2 In the invention, a section plane bisects the bearing seat (11, 12, 13, 14), the section plane containing the rotation axis of a shaft rotatably supported by means of a bearing received in the bearing seat (11, 12, 13, 14).

[0042] For lubricating the bearings, an oil pump is provided which supplies the bearings received in the bearing seats of the upper part 15 with oil delivered by the oil pump, which then drips toward the lower part 1 or flows down along the inner wall of the upper part 15 .

[0043] The bearing seats ( 11 , 12 , 13 , 14 ) of the lower part 1 are formed in an intermediate wall which has a longest extension substantially parallel to the separation plane, ie parallel to the contact plane between the lower part 1 and the upper part 15 .

[0044] The oil sump of the retarder is arranged on the side of the intermediate wall facing away from the upper part 15 , from which the oil pump delivers the oil.

[0045] In order to supply the bearings received in the bearing seats (11, 12, 13, 14), the bearing seats (11, 12, 13, 14) are designed as holes in the corresponding platforms (8, 9, 10) and extend through the intermediate wall.

[0046] The first platform 8 of the platforms ( 8 , 9 , 10 ) is arranged closer to the separation plane than the second platform 9 , and the second platform is preferably arranged closer to the separation plane than the third platform 10 .

[0047] A first bearing seat 11 is formed in the first platform 8 , a second bearing seat 12 is formed in the second platform 9 , and a third bearing seat 13 is formed in the third platform 10 .

[0048] The platforms (8, 9, 10) are substantially parallel to the separation plane, wherein the platforms are preferably constructed to be slightly inclined downward relative to the holes respectively constructed in the platforms and designed as corresponding bearing seats (11, 12, 13). In particular, however, the inclination angle relative to the separation plane is always less than 5°.

[0049] The first platform 8 is separated from the second platform 9 by a retaining edge 5, in particular a projection, wherein the retaining edge 5 projects toward the upper part 15. In particular, a shoulder is formed on the side of the retaining edge 5 facing the second platform 9.

[0050] The second platform 9 is separated from the third platform 10 by a retaining edge 6, in particular a projection, wherein the retaining edge 6 projects toward the upper part 15. In particular, a shoulder is formed on the side of the retaining edge 6 facing the third platform 10.

[0051] The third platform 10 also has a retaining edge 7 relative to the fourth bearing seat 14 .

[0052] The oil collected in the first platform is limited by the side walls of the lower part and the retaining edge 5. Here, the oil reaches the first platform 8 by dripping and / or falling and / or flowing down along the inner wall of the lower part 1. Only the part of the oil that overflows and / or splashes over the first retaining edge 5 reaches the second platform 9.

[0053] The oil collected in the second platform 9 is likewise delimited by the side walls of the lower part and the retaining edge 6 as well as the shoulder arranged on the first retaining edge 5 .

[0054] Furthermore, the oil collected in the third platform 10 is limited by the side walls of the lower part and the retaining edge 7 as well as the shoulder arranged on the first retaining edge 6 .

[0055] Furthermore, a recess (2, 3, 4) is arranged in each of the platforms (8, 9, 10) and passes through the intermediate wall.

[0056] Around the edges of the holes (2, 3, 4), an annular retaining edge is formed which protrudes toward the upper part 15, so that oil from the corresponding platform (8, 9, 10) cannot flow away through the holes (2, 3, 4).

[0057] In particular, the aforementioned retaining edge and / or the annular retaining edges protrude from the respective platform (8, 9, 10).

[0058] Therefore, the oil not only passes through the bearing, but also passes through the holes (2, 3, 4) into the oil sump.

[0059] Preferably, the separation plane is oriented horizontally and / or vertically, with respect to the axis of rotation of a shaft supported by a bearing received in the bearing seat (11, 12, 13, 14).

[0060] According to the invention, the oil therefore flows from the platform assigned to the respectively smaller bearing to the platform assigned to the next respectively larger bearing.

[0061] The first bearing seat 11 has a smaller clear inner diameter than the second bearing seat 12. In particular, the second bearing seat 12 is a bearing seat immediately adjacent to the first bearing seat 11.

[0062] The second bearing seat 12 has a smaller clear inner diameter than the third bearing seat 13 adjacent to the second bearing seat 12 .

[0063] The third bearing seat 13 has a smaller clear inner diameter than the fourth bearing seat 14 adjacent to the third bearing seat 13 .

[0064] In a further embodiment according to the invention, the intermediate wall is designed as an outer wall of the reducer and the bearing is therefore supplied with oil according to the invention via platforms of different heights on the outer wall. However, the holes (2, 3, 4) and their retaining edges are omitted here and the oil pump is supplied from an oil sump formed around the fourth bearing seat 14.

[0065] List of reference numerals:

[0066] 1 Lower part

[0067] 2Through-through gaps, especially holes

[0068] 3Through-through gaps, especially holes

[0069] 4Through-through gaps, especially holes

[0070] 5. Stop edges, especially raised parts

[0071] 6. Stop edge, especially raised part

[0072] 7. Stop edge, especially raised part

[0073] 8First Platform

[0074] 9 Second Platform

[0075] 10 Third Platform

[0076] 11 First bearing seat

[0077] 12 Second bearing seat

[0078] 13 Third bearing seat

[0079] 14 Fourth bearing seat

[0080] 15 Upper part

Claims

1. A reducer, comprising a housing, the housing comprising a lower part and an upper part connected to the lower part, A bearing seat, in particular a bearing seat designed as a through-hole, is formed in the upper part and is particularly used for the bearing of a shaft of the reducer. It is characterized in that The housing has a plurality of platforms (8, 9, 10) arranged in a stepped waterfall and acting as oil reservoirs, the platforms having successively decreasing heights, in particular successively decreasing distances from the upper part, the platforms having retaining edges (5, 6, 7) acting as overflow edges and each having, in particular for a respective one of the shafts rotatably supported by means of a bearing received in a bearing seat of the upper part, at least one respective bearing seat, In particular, the axes of rotation of the shafts rotatably supported by means of the bearing seats and the bearings received therein are parallel to one another and to the normal direction of the contact plane, and / or, The lower part has an intermediate wall, in which a bearing seat is formed, in particular a bearing seat designed as a through-hole, the bearing seat of the intermediate wall being in particular a bearing for a shaft of the reducer. The intermediate wall has a plurality of platforms (8, 9, 10), which in particular have different distances from the upper part or from the contact plane between the upper part and the lower part, that is, in particular have different distances from the separation plane and / or the parting plane of the housing, A respective one of the bearing seats is arranged and / or formed in a respective one of the platforms, The platforms are delimited and / or spaced apart from one another by stop edges (5, 6, 7), in particular overflow edges, which each protrude and / or project toward the upper part, in particular from the respective platform toward the upper part, In particular, the axes of rotation of the shafts rotatably supported by means of the bearing seats and the bearings received therein are parallel to one another and to the normal direction of the contact plane.

2. The reducer according to claim 1, It is characterized in that The platform is inclined relative to the bearing seat arranged in the corresponding platform, in particular at an inclination angle of less than 5°, and / or, The normal direction of the platform has an inclination angle of less than 5° relative to the axis of rotation of the shaft rotatably supported by means of a bearing received in the bearing seat, In particular, each of the platforms is parallel to a contact plane and / or a separation plane of the housing, ie in particular parallel to a contact plane between the upper part and the lower part, neglecting any inclinations.

3. The reducer according to claim 1, It is characterized in that Each of the platforms is parallel to a contact plane and / or a separation plane of the housing, ie in particular parallel to a contact plane between the upper part and the lower part.

4. The reducer according to claim 1, It is characterized in that Each platform is convexly curved.

5. The reducer according to claim 4, It is characterized in that The angle of inclination of the tangent plane of the platform relative to the separation plane of the shell does not exceed 5°.

6. A reducer according to any one of the preceding claims, It is characterized in that Each platform has a different distance from the contact plane and / or the separation plane.

7. A reducer according to any one of the preceding claims, It is characterized in that A corresponding aperture is formed in each platform and extends through the intermediate wall.

8. A reducer according to any one of the preceding claims, It is characterized in that An annular stop edge, which projects from the respective platform toward the upper part, delimits the respective opening relative to the respective platform.

9. A reducer according to any one of the preceding claims, It is characterized in that The respective platform is at a greater distance from the contact plane and / or the separation plane than a platform directly adjacent to the respective platform.

10. A reducer according to any one of the preceding claims, It is characterized in that The oil sump of the retarder is arranged on the side of the intermediate wall facing away from the upper part.

11. A reducer according to any one of the preceding claims, It is characterized in that The oil pump of the reduction gear delivers oil, in particular from an oil sump, to the bearings received in the bearing seats of the upper part. In particular, the oil is caused to drip from the bearing received in the bearing seat of the upper part downward onto the corresponding platform.

12. A reducer according to any one of the preceding claims, It is characterized in that The middle wall is the outer wall of the reducer.

13. A reducer according to any one of the preceding claims, It is characterized in that An axis of rotational symmetry of the bearing seat, in particular an axis of rotation of a shaft rotatably mounted by means of a bearing received in the bearing seat, is oriented vertically and / or perpendicularly to the separating plane.

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