Gearbox with a housing part

Abstract

Gearbox with a housing part, wherein the gearbox is partially filled with oil, wherein the housing part has through threaded bores on different sides, wherein a temperature control rod is screwed into each of the threaded bores that are located below the oil level.

Description

The invention relates to a gearbox with a housing part. It is generally known that a gearbox has a housing part. A transmission cooling system is known from US 4 633 938 A. A cooler for transmissions is known from US 2005 / 0 236 139 A1. An oil cooler is known from US 3 792 727 A. A transmission cooling system is known from US 4 414 861 A. A heat exchanger module is known from DE 10 2007 024 512 A1. A gearbox is known from CN 221 503 891 A1. A gearbox is known from US 2015 / 0 007 691 A1. A coal mill is known from DE 100 13 097 A1. A series of geared motors is known from US 2004 / 0 038 766 A1. The invention is therefore based on the objective of providing a gearbox that can be used in different environments. According to the invention, the problem is solved in the transmission according to the features specified in claim 1. Important features of the invention for the gearbox with a housing part are that the gearbox is partially filled with oil, the housing part has through threaded bores on different sides, and a temperature control rod is screwed into each of the threaded bores that are located below the oil level. A key advantage is that the gearbox can be used in various environments, such as cold or hot environments, and can be installed in different orientations. A particular benefit is that, regardless of the gearbox's mounting orientation, the temperature control rods can always be installed in threaded holes located below the oil level. This ensures that the gearbox can be operated with controlled temperature settings at varying ambient temperatures and in different mounting orientations. In a preferred embodiment, a plate section is attached to the housing section. The advantage here is that devices and fixtures can be attached to the plate section without requiring any modification or alteration of the housing section. In a preferred embodiment, the base is spaced away from the housing part. The advantage here is that the housing part remains protected and unchanged. In an advantageous embodiment, the plate section has a flat, in particular rectangular or cuboid, base area and spaced-apart leg sections. It is advantageous that the devices or fixtures can be attached to the base area and, by means of the leg sections, which are formed integrally with the base area as a plate section, in particular as a stamped and bent part. The bent legs allow the base area to be spaced apart from the housing part. In an advantageous embodiment, threaded bores located above the oil level are each closed by means of a sealing screw. The advantage here is that, depending on the mounting orientation of the gearbox, the corresponding threaded bores can be closed, and the threaded bores located below the oil level can be used for screwing in the temperature control rods. In an advantageous embodiment, the threaded bores are identical to each other and / or have the same thread diameter, thread pitch, and / or thread diameter. It is advantageous that the cooling rods can be screwed into all threaded bores. Thus, the cooling rods can be selectively screwed into any of the threaded bores. In an advantageous embodiment, each temperature control rod projects through the respective threaded bore and into the interior of the gearbox, particularly the bevel gearbox, which is enclosed by the housing part. It is advantageous that the bevel gearbox can be temperature-controlled. In an advantageous embodiment, each leg section is pressed against the housing part by means of the screw head of a screw inserted into a respective threaded bore in the housing part and connected to the base section, in particular in a single piece. An advantage of this is that simple manufacturing is achievable. In an advantageous embodiment, an opening in the housing part is covered by a cover part, the cover part being oil-tightly connected to the housing part. An advantage here is that the cover part can be used as an inspection cover. In another advantageous embodiment, the cover part also has through-holes, into which either a temperature control rod or a sealing screw is screwed. An advantage here is that this allows for more threaded holes into which temperature control rods can be inserted. In an advantageous embodiment, the transmission comprises a bevel gear and a planetary gear, wherein the housing part encloses a bevel gear stage and a planetary gear housing is connected to the housing part. An advantage of this is that the two gears may use different types of oil. In an advantageous embodiment, the housing part has at least one continuous recess that connects the interior of the bevel gear with the interior of the planetary gear and / or that opens into both the interior of the bevel gear and the interior of the planetary gear. An advantage of this is that when this recess is activated, both gears may use the same type of oil, thus allowing oil exchange between them. This ensures effective temperature control for both gears. In an advantageous embodiment, a bearing of an intermediate shaft of the transmission is received in a further recess of the housing part, in particular wherein an outer ring of the bearing is received in the further recess and the inner ring of the bearing is mounted on the intermediate shaft. It is advantageous that the intermediate shaft transmits the output torque of the bevel gear stage to the sun gear of the planetary gear stage. In a preferred embodiment, a shaft seal is accommodated in the further recess, which seals against the intermediate shaft. An advantage of this is that the bevel gear stage can be lubricated with a different type of oil than the planetary gear stage. In a preferred embodiment, the bevel gear is partially filled with a first oil, and the planetary gear is partially filled with a second oil, the first oil being different from the second. The advantage here is that the temperature control effectively affects the faster-rotating bevel gear stage. Further advantages arise from the dependent claims. The invention is not limited to the combination of features of the claims. For those skilled in the art, further meaningful combinations of claims and / or individual claim features and / or features of the description and / or the figures will become apparent, in particular from the problem statement and / or the problem arising from a comparison with the prior art. The invention will now be explained in more detail with reference to a schematic illustration: Fig. 1 shows a transmission according to the invention in an oblique view from a first viewing direction. Fig. 2 shows a cross-sectional oblique view of the transmission. Fig. 3 shows the transmission in an oblique view from a second viewing direction. As shown in the figures, the transmission shown in the figures has a bevel gear stage of an angle gear designed as a bevel gear, which is enclosed by a housing part 2. A planetary gear housing 1 of a planetary gear is connected to the housing part 2, which encloses one or more planetary gear stages. Both gear stages are partially filled with oil, with the interior of the planetary gear stage being filled with a different oil than the interior of the bevel gear stage. For this purpose, the housing part 2 has continuous recesses which would connect the interior of the bevel gear with the interior of the planetary gear, but are closed by means of a sealing plate 20 which is attached to the housing part 2, in particular by means of screws screwed into threaded bores of the housing part 1. The driving shaft 5 is connected to a bevel pinion in a rotationally fixed manner, which is in engagement with a bevel gear that is connected to an intermediate shaft 6 in a rotationally fixed manner. The intermediate shaft 6 is non-rotatably connected to a sun gear of the planetary gear stage, which has a planet carrier on which planet gears are rotatably mounted, which are in mesh with the sun gear on one side and with a ring gear toothing on the other. The planetary gear is preferably designed as a two-stage device. The output shaft 7 of the planetary gear is aligned perpendicular to the input shaft 5 of the bevel gear. The intermediate shaft 6 protrudes through a continuous further recess in the housing part 2 into the interior of the planetary gear. An inner ring of a rolling bearing is mounted on the intermediate shaft 6, with the outer ring of the bearing being received in the wider recess. A shaft seal is received axially next to the bearing in the wider recess, sealing against the shaft. Thus, the interior of the bevel gear is separated from the interior of the planetary gear with regard to the oil, and different types of oil can be used in the two interiors. An opening of the housing part 2 is covered by a cover part 8, which is connected to the housing part 2 in an oil-tight manner by means of an intermediate seal, in particular a flat seal. In the lid part 8 and in different sides of the housing part 2, continuous threaded bores 10 are provided, which can optionally be sealed oil-tight by screwed-in sealing screws or are available for screwing in temperature control rods 3. Each temperature control rod 3 protrudes through the respective threaded bore into the interior of the bevel gear, specifically into the oil sump, i.e., the oil-filled area of ​​the interior. Each temperature control rod 3 contains either a heating element or a pipe for a cooling medium. Since the interior of the bevel gear is not completely filled with oil, depending on the spatial orientation of the gear unit, only some of the threaded bores 10 are below the oil level. The remaining threaded bores are located above the oil level. However, since the number of threaded bores 10 exceeds the number of cooling rods 3, the threaded bores 10 can be arranged such that a sufficient number of them are located below the oil level in every mounting orientation. Thus, all cooling rods 3 can be located below the oil level. Preferably, one cooling rod 3 is provided in each of three or four of the threaded bores 10, in particular, screwed in. Because of the shaft seal 21 and the sealing plate 20, the temperature control rods 3 are primarily effective for the oil located in the bevel gear. Each of the threaded bores is surrounded on the outer surface of the housing part 2, and in particular the cover part 8, by a finely machined surface, in particular an annular surface. Thus, a sealing screw screwed into the respective threaded bore 10 can be connected in an oil-tight manner, since an annular seal can be placed between the screw head of the respective sealing screw and the surface, in particular the annular surface, which can be pressed against the surface by the screw head. A plate part 9 can also be attached to threaded holes 10, to which further devices, such as electrical appliances or condition monitoring devices, can be mounted without damaging or modifying the housing part 2. This plate part 9, in particular a stamped and bent part, has a flat base area, in particular rectangular, to which strip-shaped leg areas adjoin. These leg areas are fastened to the housing part 2 by means of screws screwed into the threaded bores 10. The leg areas are bent towards the base area. Thus, a bending point is arranged between the base area and the respective leg area. Preferably, four spaced-apart leg areas are provided to hold the base area. The plate part 9, including its base area and leg areas, is preferably made in one piece. Preferably, the base area is spaced apart from the housing part 2. Thus, air or a leg area is arranged between the housing part 2 and the base area. In particular, the plate part 9, with its leg areas screwed to the housing part, stands on the outer surface of the housing part 2. The cover part 8 is attached to the housing part 1 by screws which are screwed into threaded holes in the housing part 1. The hole pattern formed by the threaded holes exhibits discrete rotational symmetry. In particular, the cover part 8 can be attached with the screws in the same hole pattern after being rotated by 90° or by an integer multiple of 90°, or the cover part 8 can be attached with the screws in the same hole pattern after being rotated by 180° about an axis of rotation that is oriented in the normal direction, in particular vertically, as well as about an axis of rotation that is located within the cover part 8. In further embodiments of the invention, the sealing plate 20 and the shaft seal 21 are removed. This allows the oil from both internal chambers to mix, meaning that only one type of oil can be used for both gearboxes. In this gearbox variant, the sealing seat of the shaft seal 21 is not occupied. Nevertheless, the sealing seat is precision-machined so that the shaft seal 21 could be used at any time. Here, the temperature control rods 3 are effective for all the oil contained in the gearbox. Reference symbol list 1 Planetary gear housing 2 Housing part 3 Temperature control rod 4 Oil pipe 5 Input shaft 6 Intermediate shaft 7 Output shaft 8 Cover part 9 Plate part, in particular stamped and bent part 10 Through threaded bore 20 Sealing plate 21 Shaft seal QUOTES INCLUDED IN THE DESCRIPTION This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature US 4 633 938 A

[0003] US 2005 / 0 236 139 A1

[0004] US 3 792 727 A

[0005] US 4 414 861 A

[0006] DE 10 2007 024 512 A1

[0007] CN 221 503 891 A1

[0008] US 2015 / 0 007 691 A1

[0009] DE 100 13 097 A1

[0010] US 2004 / 0 038 766 A1

[0011]

Claims

Gearbox with a housing part, wherein the gearbox is partially filled with oil, characterized in that the housing part has through threaded bores on different sides, wherein a temperature control rod is screwed into each of the threaded bores that are located below the oil level. Gearbox according to claim 1, characterized in that a plate part is attached to the housing part. Gearbox according to one of the preceding claims, characterized in that the plate part has a flat, in particular rectangular or cuboid, base area and leg areas spaced apart from each other. Gearbox according to one of the preceding claims, characterized in that the base area is spaced away from the housing part. Gearbox according to one of the preceding claims, characterized in that threaded bores which are arranged above the oil level are each closed by means of a sealing screw. Gearbox according to one of the preceding claims, characterized in that the threaded bores are identical to each other and / or have the same thread diameter, thread pitch and / or thread pitch. Gearbox according to one of the preceding claims, characterized in that each temperature control rod extends through the respective threaded bore and into the interior of the gearbox, in particular the angle gearbox, enclosed by the housing part. Gearbox according to one of the preceding claims, characterized in that each leg area is pressed against the housing part by means of the screw head of a respective screw screwed into a respective threaded bore of the housing part and is connected to the base area, in particular is made in one piece. Gearbox according to one of the preceding claims, characterized in that an opening of the housing part is covered by means of a cover part, wherein the cover part is connected to the housing part in an oil-tight manner. Gearbox according to one of the preceding claims, characterized in that the cover part also has through threaded bores into which either a temperature control rod or a sealing screw is screwed. Gearbox according to one of the preceding claims, characterized in that the gearbox comprises a bevel gear and a planetary gear, wherein the housing part encloses a bevel gear stage and a planetary gear housing is connected to the housing part. Gearbox according to one of the preceding claims, characterized in that the housing part has at least one continuous recess which connects the interior of the angle gearbox with the interior of the planetary gearbox and / or which opens into both the interior of the angle gearbox and the interior of the planetary gearbox. Gearbox according to one of the preceding claims, characterized in that a bearing of an intermediate shaft of the gearbox is received in a further recess of the housing part, in particular wherein an outer ring of the bearing is received in the further recess and the inner ring of the bearing is mounted on the intermediate shaft. Gearbox according to one of the preceding claims, characterized in that a shaft seal ring is received in the further recess, which seals to the intermediate shaft. Gearbox according to one of the preceding claims, characterized in that the angle gearbox is partially filled with a first oil and the planetary gearbox is partially filled with a second oil, wherein the first oil is different from the second oil.

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