EP4643032A1 - Getriebe mit einem gehäuseteil und einer rohrleitung - Google Patents
Getriebe mit einem gehäuseteil und einer rohrleitungInfo
- Publication number
- EP4643032A1 EP4643032A1 EP23809451.0A EP23809451A EP4643032A1 EP 4643032 A1 EP4643032 A1 EP 4643032A1 EP 23809451 A EP23809451 A EP 23809451A EP 4643032 A1 EP4643032 A1 EP 4643032A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing part
- layer
- winding
- bushing
- sleeve
- 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
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
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
- F16H57/0417—Heat exchangers adapted or integrated in the gearing
-
- 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
- F16H57/0457—Splash lubrication
Definitions
- Gearbox with a housing part and a pipe
- the invention relates to a transmission with a housing part and a pipeline.
- a transmission has a housing part in which toothed parts are arranged and whose openings can be closed with a transmission cover.
- a cooling piping for a gearbox is known from CN 212 273 319 U.
- a gearbox is known from JP 2010 - 249 156 A.
- a lubricating oil cooling system for transmissions is known from US 2 687 784 A.
- the invention is therefore based on the object of enabling a simple manufacture of a transmission that achieves high performance with a small installation volume.
- the object is achieved in the transmission according to the features specified in claim 1.
- the transmission is designed with a housing part and a pipe, in particular through which a cooling medium can flow
- the housing part has at least one through-bore, in particular through the wall or side wall of the particularly trough-shaped housing part, in which a connection of the pipe is arranged, in particular such that a coolant line coming from the outside can be connected to the pipe
- the pipeline in the transmission is designed as at least a two-layer winding, in particular a planar winding and/or flat winding, wherein the first layer of the winding extends further in a direction which is aligned perpendicular to the winding axis than the second layer of the winding, in particular wherein the first layer is connected to the connection and the second layer is connected to a further, similarly designed connection spaced apart from the connection, in particular wherein the first layer is arranged closer to the bottom of the trough-shaped housing part than the second layer, in particular such that the area wrapped by the first layer is larger than the area wrapped by the second layer
- the advantage here is that the pipe is wound up in layers of different sizes.
- a first layer can be made very large and can be arranged as low as possible in the tub-shaped housing part.
- the associated connection of the pipe i.e. the connection of the first layer, can be arranged very low, so that a screw connection with an open-end wrench cannot be operated in the interior of the housing part, as the connection is arranged very close to the floor and/or on a side wall, which hinders the rotational movement of an open-end wrench.
- the open-end wrench only needs to be applied and operated from the outside. This simplifies production. Due to the particularly close positioning of the connection of the first layer of the pipeline, the first layer can be arranged particularly close to the floor and thus heat dissipation is improved. In particular, the heat from the housing part, in particular the floor of the housing part, can also be efficiently dissipated via the first layer. In an advantageous embodiment, the distance between the bore and the bottom of the tub-shaped housing part is less than fifteen percent, in particular less than ten percent, of the clear inner diameter of the bore. The advantage here is that an open-end wrench can no longer be placed on a screw part and operated, i.e. rotated, since there is insufficient space between the bore and the bottom and/or the side wall of the housing part.
- the distance between the bore, which is made in a first, in particular flat, wall area, and a second, in particular flat, wall area of the trough-shaped housing part, which is aligned perpendicularly to the first wall area is less than fifteen percent, in particular less than ten percent, of the clear inner diameter of the bore.
- the smallest distance from a toothed part enclosed by the gear, the axis of rotation of which is aligned perpendicular to the winding axis, to the bottom of the trough-shaped housing part is smaller than the largest distance of the second layer from the bottom of the trough-shaped housing part, in particular wherein the first layer of the winding extends further perpendicular to the direction of the axis of rotation of the toothed part and perpendicular to the winding axis of the first and second layers than the second layer of the winding, in particular wherein the axis of rotation of the toothed part is aligned perpendicular to the normal direction of the winding plane, in particular wherein the housing has a cover part and the trough-shaped housing part, wherein the cover part is placed on the trough-shaped housing part.
- the advantage here is that the lubricating oil flow carried along by the toothed part is conveyed directly to the first layer and thus heat dissipation can be carried out easily.
- the vertical projection of the gear part of the transmission into the winding plane of the first layer is spaced apart from the vertical projection of the second layer into the winding plane of the first layer.
- the advantage here is that the gear part is just as close to the first layer as the second layer. The heat flow from the gear part to the first layer is thus as direct as possible and thus as large as possible.
- the gear has a housing part and a pipe, in particular through which a cooling medium can flow, wherein the housing part has a continuous bore, in particular through the wall of the housing part, wherein the gear has a connecting piece, wherein a bushing has an external thread region with which the bushing is screwed into an internal thread region of the bore, wherein the bushing is plugged onto the connecting piece and/or arranged between the connecting piece and the housing part, wherein the connecting piece is hollow and/or has an axially continuous recess, in particular wherein the axial direction is aligned parallel to the direction of the screw axis of the external thread region and/or internal thread region.
- the advantage here is that the pipe only needs to be connected to an adapter piece, which can then be connected to the connector piece by simply plugging it in.
- This allows for improved sealing and protects the bushing from the sleeve.
- the bushing can therefore be made from plastic and the sleeve from metal, so that the bushing is protected from external mechanical influences.
- a sensor can be inserted into the sleeve to detect a leak. This can detect either the lubricant from the interior of the gearbox and/or the coolant from the pipe.
- the bushing is made of a more elastic material than the connecting piece, in particular the bushing is made of plastic and/or the connecting piece is made of metal.
- the advantage here is that improved tightness can be achieved because the more elastic material can be deformed without any special effort.
- the distance between the bore and the bottom of the trough-shaped housing part is less than fifteen percent, in particular less than ten percent, of the clear inner diameter of the bore.
- the distance between the bore made in a first, in particular flat, wall area and a second, in particular flat, wall area of the trough-shaped housing part that is aligned perpendicularly to the first wall area is less than fifteen percent, in particular less than ten percent, of the clear inner diameter of the bore.
- the connecting piece protrudes through the housing part, in particular through the wall of the housing part, and/or protrudes from both sides of the housing part, in particular from the wall of the housing part. It is advantageous here that that the connection of the pipeline and a line coming from outside can be realized in a very simple manner.
- the connecting piece has an internal thread into which an adapter piece is screwed, wherein the adapter piece has an internally conical region in which one end of the pipeline is received and/or into which the end of the pipeline is inserted, in particular wherein a union nut is screwed onto the outside of the internally conical region of the adapter piece, such that the internally conical region is elastically deformed, in particular shrunk onto the end of the pipeline.
- the bushing protrudes from the housing part, in particular on the side of the housing part facing away from the adapter piece and/or the pipeline, with a sleeve being placed on the connecting piece and resting against the housing part.
- the advantage here is that the bushing can be protected by means of the sleeve and can therefore be manufactured from plastic.
- the sleeve surrounds the area of the bushing that protrudes from the housing part, particularly radially.
- the advantage here is that the bushing can be mechanically protected.
- the radial distance area covered by the sleeve in the area covered by the sleeve in the axial direction, includes the radial distance area covered by the bushing, in particular in the area of the bushing protruding from the housing part, and/or is spaced apart from it.
- the advantage here is that the bushing can be surrounded by the sleeve in a way that protects it from the outside.
- the area covered by the sleeve in the axial direction overlaps the area covered by the bushing in the axial direction, in particular completely.
- the advantage here is that the sleeve extends further away from the housing part than the bushing and thus encloses and protects the bushing.
- the sleeve is connected to the connecting piece in a rotationally fixed manner by means of at least one first screw part, in particular a threaded pin, wherein the first screw part is at least partially screwed into a radially directed threaded bore of the sleeve and projects into a radially directed recess of the connecting piece. It is advantageous here that the relative position of the sleeve is fixed to the connecting piece.
- a second screw part is provided, which is at least partially screwed into an axially directed threaded hole in the sleeve and at least partially screwed into an axially directed threaded hole in the housing part.
- the first screw part is spaced from the second screw part in the circumferential direction, in particular wherein the first screw part is arranged radially within the radial spacing area covered by the second screw part.
- the area of the bushing that protrudes from the housing part has an outer diameter that is larger than the clear inner diameter of the threaded hole in the housing part.
- the nut screwed onto the connector secures the sleeve to the housing part, in particular that the bushing is also pressed against the housing part and is elastically deformed.
- the pipeline in the gear unit is arranged as at least a two-layer winding, in particular a flat winding and/or a flat winding, the first layer of the winding extending further perpendicular to the winding axis than the second layer of the winding, in particular the first layer being arranged closer to the bottom of the trough-shaped housing part than the second layer, in particular such that the area wrapped by the first layer is larger than the area wrapped by the second layer, in particular the first layer having at least two turns and the second layer also having at least two turns.
- the advantage here is that, on the one hand, the greatest possible heat flow can be achieved towards the first layer starting from the bottom of the trough-shaped housing part, since the first layer is arranged closer to the bottom of the trough-shaped housing part than the second layer.
- a driving toothed part can be provided above the first layer, which can thus be arranged similarly close to the first layer as the second layer, but the second layer is spaced apart from the toothed part.
- the oil moved from the driving side can be dissipated as directly as possible.
- the spacing between the toothed part and the second layer is particularly clearly visible when both components are projected vertically into a plane whose normal plane is aligned parallel to the winding axis.
- the axis of rotation of the toothed part is parallel to this plane.
- the plane is preferably aligned perpendicular to the winding axis of the first layer and the second layer.
- the vertical projection of a gear part of the gear into the winding plane of the first layer is spaced from the vertical projection of the second layer into the winding plane of the first layer.
- the normal direction of the winding plane is aligned parallel to the winding axis of the first layer and parallel to the winding axis of the second layer.
- the smallest distance from the toothed part to the bottom of the trough-shaped housing part is smaller than the largest distance of the second layer from the bottom of the trough-shaped housing part, in particular wherein the axis of rotation of the toothed part is aligned perpendicular to the normal direction of the winding plane, in particular wherein the housing has a cover part and the trough-shaped housing part, wherein the cover part is placed on the trough-shaped housing part.
- a sensor in particular a leakage sensor, is arranged on the inside of the sleeve, in particular such that the sensor is arranged at the lowest point on the inside of the sleeve in the direction of gravity.
- the advantage here is that a high level of security against leakage can be achieved.
- the sensor can be arranged at the lowest point on the inside due to the predefined rotational position of the sleeve.
- Figure 1 shows a housing part 1 of a transmission according to the invention with inserted pipe 2 in plan view.
- Figure 3 shows the two-layer winding in an oblique view.
- Figure 4 shows the two-layer winding in side view.
- the housing part 1 is shown in an oblique view, with a connection 4 shown at least partially exploded.
- Figure 8 shows the housing part 1 in plan view.
- Figure 9 shows a cross section of the housing part 1 in the region of the at least partially exploded connection 4.
- Figure 10 shows the pipeline 2 with exploded connection in an oblique view.
- the gear has a housing part 1, on the first side of which, in particular the top side, an opening is formed through which the pipe 2 designed as a two-layer winding can be inserted and mounted.
- a first layer 20 of the winding extends further in a first direction than a second layer 21 of the winding.
- the first layer 20 is in the direction of gravity arranged below the second layer 21. This allows improved heat dissipation of the housing part 1, since the waste heat flowing into the housing part 1 is quickly distributed over the entire housing part 1 and the first layer 20 is arranged closer to the inner wall of the housing part 1, in particular the underside of the housing part 1, than the second layer 21.
- the pipeline can be supplied with a cooling medium, in particular water, by a pump arranged outside the transmission by means of a first connection 3, in particular an inlet, passing through the housing part 1, and by means of a second connection 4, in particular an outlet, passing through the housing part 1.
- a cooling medium in particular water
- the housing part 1 is made of metal, in particular of cast steel.
- the interior of the gear is at least partially filled with a lubricating oil, which supplies the bearings of the gear and the meshing tooth areas.
- connections (3, 4) can be mounted sealed from the outside.
- the housing part 1 has a through hole for each connection (3, 4), which has a thread introduced from the outside and which is not completely through.
- a hollow bushing 71 provided with an external thread is screwed into this thread from the outside and is placed onto a connecting piece 70 protruding through the bore.
- the bushing 71 is made of a more elastic material, in particular plastic, than the hollow connecting piece 70.
- the connecting piece 70 is made of metal.
- the bushing 71 is elastically deformed and seals between the connecting piece 70 and the housing part 1.
- this seal ensures oil tightness, in particular so that the lubricating oil of the transmission cannot escape into the external environment.
- the connecting piece 70 projects through the housing part 1 as well as through the bushing 71 and through the sleeve 72, in particular in the axial direction, i.e. in particular parallel to the screwing direction of the bushing 71 or the screwing axis direction of the external thread of the bushing 71.
- the sleeve 72 is aligned coaxially with the bushing 71 and the connecting piece 70 and completely surrounds the bushing 71 radially, in particular in the circumferential direction.
- the area of the bushing 71 protruding axially from the housing part 1 is surrounded by the sleeve 72 and thus protected.
- the sleeve 72 is preferably made of metal.
- the bushing 71 is positioned against the inside of the sleeve 72.
- a nut 73 is screwed with its internal thread onto an area of the connecting piece 70 provided with an external thread and is positioned axially against the sleeve 72.
- the sleeve 72 is thus pressed against the housing part 1 by the nut 73.
- the connecting piece 70 is preferably made of metal.
- a union nut 80 with adapter part 81, in particular a nozzle, is placed on the pipe 2.
- the pipe 2 is inserted into a conical region of a recess of the adapter part 81, in particular the nozzle, whereby the clear inner diameter of the adapter part 81 decreases with increasing insertion depth of the pipe 2 by means of the conical region.
- the conical region of the adapter part 81 On its outer circumference, the conical region of the adapter part 81 has a threaded section onto which the union nut 80 is screwed with its internal thread, so that the union nut 80 deforms the conical region, in particular and thereby shrinks it onto the pipe.
- the recess of the adapter part 81 is continuous in the axial direction.
- the adapter part 81 is screwed into an internally threaded bore of the connecting piece 70 with its end region facing away from the pipeline and provided with an external thread.
- the adapter part 81 only has to be screwed into the connector and the pipeline inserted into the adapter part 81.
- the connection is sealed by screwing on the union nut 80, in particular with the additional use of a sealing ring or even cutting ring which is surrounded by the union nut 80.
- the bushing 71 protrudes radially on the side of the housing part 1 facing away from the adapter piece, the bushing 71 is prevented from completely migrating into the bore of the housing part.
- the bushing 71 is protected by the sleeve 72 forming the housing.
- the end of the pipe can be connected to the adapter piece and the union nut before it is inserted into the gearbox.
- the connection After the pipe 2 has been inserted into the gearbox, no screwing is necessary inside the gearbox; simply inserting the adapter piece into the connecting piece 70 is sufficient. Screwing is only required outside the gearbox.
- the invention therefore makes it possible for the connection to be arranged extremely close to the bottom of the tub-shaped housing part, in particular close to a lower side corner of the housing part 1. This is because it is not necessary to operate it with a tool such as an open-end wrench.
- the hole can therefore be arranged very close to the bottom or another side wall.
- the adapter part 81, in particular the nozzle, and/or the union nut 80 are made of plastic.
- improved tightness can be achieved by elastic pre-tensioning.
- the second layer 21 takes up less space than the first layer 20.
- This free space which is located above the blackened area in Figure 10, can therefore be used by a gear wheel that extends into it. In this way, efficient use of space is possible.
- the sleeve 72 is connected to the connecting piece 70 in a rotationally fixed manner by means of at least one first screw part, in particular a threaded pin, in particular in that the first screw part is screwed into a radially directed threaded bore and projects into a radially directed recess, in particular a threaded bore, of the connecting piece 70, in particular and is at least partially screwed in.
- a second screw part is provided which is screwed into an axially directed threaded bore of the sleeve 71 and is at least partially screwed into an axially directed threaded bore of the housing part 1.
- This axially directed threaded bore is spaced in the circumferential direction from the above-mentioned radially directed threaded bore.
- the sleeve 71 is screwed to the housing part 1 by means of the first screw part and is connected in a rotationally fixed manner to the connecting piece 70 by means of the second screw part.
- the sleeve 72 presses on the bushing 71.
- the nut 73 is then not necessary.
- a sensor in particular a leakage sensor, is arranged on the inside of the sleeve.
- the sensor can be used to detect the leakage of coolant or lubricant from the bore of the housing part 1.
- the sleeve 72 surrounds the area of the bushing 71 that protrudes from the housing part 1 and is pressed against the housing part by the nut 73.
- the rotational position of the sleeve 72 is fixed. Therefore, the rotational position of the sensor on the inside of the sleeve 72 is also fixed.
- the rotational position is fixed in such a way that the sensor is arranged in the direction of gravity at the bottom in the area surrounded by the sleeve 72 and therefore makes the first drops of leakage directly detectable.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211677342.8A CN118257840A (zh) | 2022-12-26 | 2022-12-26 | 具有壳体件和管道的减速器 |
| DE102023001216 | 2023-03-28 | ||
| PCT/EP2023/025467 WO2024141165A1 (de) | 2022-12-26 | 2023-11-08 | Getriebe mit einem gehäuseteil und einer rohrleitung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4643032A1 true EP4643032A1 (de) | 2025-11-05 |
Family
ID=88874640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23809451.0A Pending EP4643032A1 (de) | 2022-12-26 | 2023-11-08 | Getriebe mit einem gehäuseteil und einer rohrleitung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4643032A1 (de) |
| DE (1) | DE102023004507A1 (de) |
| WO (1) | WO2024141165A1 (de) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2687784A (en) | 1951-05-31 | 1954-08-31 | Falk Corp | Lubricant cooling for gear sets |
| US4633938A (en) | 1985-08-08 | 1987-01-06 | The Falk Corporation | Gear drive cooling system |
| JP5436012B2 (ja) | 2009-04-10 | 2014-03-05 | 住友重機械工業株式会社 | 減速機 |
| DE102010034198B4 (de) | 2010-08-12 | 2025-04-30 | Sew-Eurodrive Gmbh & Co Kg | Anordnung zum Kühlen einer Vorrichtung, insbesondere Getriebe, und Getriebe |
| US20180023683A1 (en) * | 2016-07-19 | 2018-01-25 | GM Global Technology Operations LLC | System and method for managing transmission fluid temperature |
| CN212273319U (zh) | 2020-06-11 | 2021-01-01 | 北京中煤汇嘉机电科技有限公司 | 一种齿轮箱换热器 |
-
2023
- 2023-11-08 EP EP23809451.0A patent/EP4643032A1/de active Pending
- 2023-11-08 DE DE102023004507.1A patent/DE102023004507A1/de active Pending
- 2023-11-08 WO PCT/EP2023/025467 patent/WO2024141165A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102023004507A1 (de) | 2024-06-27 |
| WO2024141165A1 (de) | 2024-07-04 |
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