Transmission comprising a first housing part and a second housing part

Abstract

A transmission comprising a first housing part and a second housing part is disclosed, wherein the first housing part has a first side wall and a second side wall, wherein a first bearing of the drive input shaft and / or a first bearing of an intermediate shaft of the transmission is received in the first side wall, wherein a second bearing of the drive input shaft and / or a second bearing of an intermediate shaft of the transmission is received in the second side wall, wherein a first bearing of the drive output shaft is received in the first side wall, wherein a drive output bearing of the drive output shaft is received in the second housing part, wherein a first toothed gear is connected to the drive output shaft for conjoint rotation, said first toothed gear meshing with a second toothed gear that is connected to a second shaft for conjoint rotation, wherein a first bearing of the second shaft is arranged in the second side wall of the first housing part, wherein a drive output bearing of the second shaft is received in the second housing part, wherein the second shaft is oriented parallel to the drive output shaft.

Description

[0001] Gearbox with a first housing part and a second housing part

[0002] Description:

[0003] The invention relates to a transmission with a first housing part and a second housing part.

[0004] It is generally known that a gearbox has a housing part.

[0005] The closest state of the art known from CN 2 13 393 363 U is a gearbox with a double-shaft output.

[0006] From CN 2 03 413 043 U a gearbox with a one-piece housing and double-shaft output is known, whereby the bearings are lubricated from a single central lubricating oil source.

[0007] DE 10 2017 121 608 A1 discloses a transmission with two output shafts that are not aligned parallel to each other. Furthermore, the bearing of an intermediate shaft is located in the side wall of the transmission housing that also houses the two output shaft output bearings.

[0008] A vertical conical twin-shaft extruder gear is shown in CN 2 03 384 340 U.

[0009] CN 1 10 541 913 A shows a gearbox with two output shafts.

[0010] CN 1 04 121 331 A also shows a gearbox with two output shafts.

[0011] CN 1 02 865 351 A shows the output side of a gearbox with two output shafts.

[0012] A gearbox for twin-screw extruders is known from DE 197 54 359 A1. The invention is therefore based on the object of further developing a gearbox that can drive an extruder.

[0013] According to the invention, the object is achieved in the transmission according to the features specified in claim 1.

[0014] Important features of the invention in the transmission with a first housing part and a second housing part are that the first housing part has a first side wall and a second side wall, wherein a first bearing of the input shaft and / or a first bearing of an intermediate shaft of the transmission is received in the first side wall, wherein a second bearing of the input shaft and / or a second bearing of an intermediate shaft of the transmission is received in the second side wall, wherein a first bearing of the output shaft is received in the first side wall, wherein an output bearing of the output shaft is received in the second housing part, wherein a first gear is non-rotatably connected to the output shaft, which engages with a second gear that is non-rotatably connected to a second shaft, wherein a first bearing of the second shaft is arranged in the second side wall of the first housing part,An output bearing for the second shaft is accommodated in the second housing part, with the second shaft aligned parallel to the output shaft. The advantage here is that the second shaft is also supported by a bearing in the first housing part, but not in the same side wall of the preferably cuboid-shaped first housing part. Thus, none of the side walls is overloaded.

[0015] The second housing section does not house any bearings for the input shaft or the intermediate shafts. Only the bearings for the second shaft and the output bearing for the output shaft are housed in the second housing section.

[0016] The first and second gears are arranged outside the first housing part.

[0017] The input shaft can also be referred to as the drive shaft or input shaft and preferably has a smaller diameter than the output shaft, which can also be referred to as the output shaft or drive shaft of the transmission.

[0018] In an advantageous embodiment, the first gear is identical to the second gear. This is advantageous because a gear ratio of one can be achieved, thus ensuring that the output shaft and the second shaft rotate at the same speed.

[0019] In an advantageous design, the speed of the output shaft always equals the speed of the second shaft. This is advantageous because both shafts can be used as extruder drives. For this purpose, the two shafts are aligned parallel to each other.

[0020] In an advantageous embodiment, the output bearing of the output shaft comprises a bearing accommodated in the second housing part and a bearing receiving part, in particular a bearing flange, wherein an angular contact bearing is accommodated in the bearing receiving part for supporting the output shaft, wherein the flange part is detachably connected to the second housing part. Advantageously, the second housing part is axially extended sufficiently to accommodate the bearing, designed as a rolling bearing, and an angular contact bearing axially one behind the other.

[0021] In an advantageous embodiment, the output bearing of the second shaft comprises a bearing accommodated in the second housing part and a bearing receiving part, in particular a bearing flange. An angular contact bearing for supporting the output shaft is accommodated in the bearing receiving part of the output bearing of the second shaft, with the flange part being detachably connected to the second housing part. It is advantageous that the second housing part is axially extended sufficiently to accommodate the bearing, designed as a rolling bearing, and an angular contact bearing axially one behind the other.

[0022] In an advantageous embodiment, the second housing part rests in contact with the second side wall of the first housing part. Advantageously, a centering means can be formed on the second side wall, allowing the second housing part to be centered thereon, thus enabling a precise connection.

[0023] In an advantageous embodiment, the first side wall is spaced apart from the second housing part. This is advantageous because the forces can be widely distributed.

[0024] In an advantageous embodiment, the first housing part is connected to the second housing part, particularly in an oil-tight manner. This is advantageous in that the second housing part allows for an extension of a gear housing, thus allowing the gear drive to optionally accommodate the output of the gear, which can be used as an extruder drive.

[0025] In an advantageous embodiment, the first housing part is designed in two parts, with the two parts of the first housing part being connected to each other at a parting plane that bisects the bearing mounts of the first bearing of the output shaft and the bearing mount of the first bearing of the second shaft. This is advantageous because the gearbox is easy to manufacture. The intermediate shaft and input shaft, together with the bearing, can be inserted into the first part, and the other part can then be attached.

[0026] The bearing mounts of the output shaft and second shaft bearings housed in the first housing section are also divided by the parting plane. The output bearings of these shafts, i.e., the bearings housed in the second housing section or the angular contact bearings housed in the respective flange section, are arranged in undivided bearing mounts. Thus, high loads can be dissipated through these bearing mounts, particularly transverse and axial forces.

[0027] In an advantageous embodiment, the respective bearing mounts of the output bearings of the output shaft and the second shaft are constructed as a single piece, in particular spaced apart from the parting plane. This is advantageous because a high load can be dissipated on the output side.

[0028] In an advantageous embodiment, the second housing part has a third and a fourth side wall, wherein the output bearing of the output shaft and the output bearing of the second shaft are arranged and / or received in the fourth side wall, wherein the third side wall is pressed against the second side wall of the first housing part by means of screws, wherein a flat seal is arranged between the second side wall of the first housing part and the third side wall of the second housing part. The advantage here is that the second housing part can be omitted to form a different transmission variant, and likewise the second shaft can be omitted, wherein the output bearing of the output shaft is formed in the second side wall of the first housing part. Thus, a transmission variant with a one-piece output shaft can be formed which cannot be used for extruder applications.In this way, a modular system is created that allows a large number of transmission variants with a small number of parts.

[0029] In an advantageous embodiment, the first side wall is aligned parallel to the second side wall and spaced from it, wherein the third side wall is aligned parallel to the second side wall, wherein the fourth side wall is aligned parallel to the third side wall and spaced from it. It is advantageous that the first housing part can also be used for a gearbox variant that does not provide for an extruder drive. In this case, the second housing part and the second shaft are omitted. In an advantageous embodiment, the output shaft passes through a bearing receptacle that is designed and / or formed in the second side wall of the first housing part, in particular centrally, in particular wherein a free space that is at least partially filled with lubricating oil is arranged between the output shaft and this bearing receptacle, i.e. in particular no bearing is accommodated in this bearing receptacle.The advantage here is that a gearbox variant can optionally be designed without the double-shaft extruder output, in which case the second housing part and the second shaft are omitted.

[0030] Further advantages emerge from the dependent claims. The invention is not limited to the combination of features in the claims. Further possible combinations of claims and / or individual claim features and / or features of the description and / or the figures will become apparent to those skilled in the art, particularly from the problem and / or the problem posed by comparison with the prior art.

[0031] The invention will now be explained in more detail using schematic illustrations:

[0032] Figure 1 shows a transmission according to the invention in cross section.

[0033] In Figure 2, the gearbox is shown in a first oblique view.

[0034] In Figure 3, the gearbox is shown in an oblique view from a different perspective.

[0035] As shown in the figures, a multi-stage parallel shaft gear is arranged in a first housing part.

[0036] For this purpose, an input shaft 6 is rotatably mounted via bearings which are accommodated in the first housing part 1.

[0037] A gear wheel which is connected in a rotationally fixed manner to the input shaft 6 is in engagement with a gear wheel which is connected in a rotationally fixed manner to an intermediate shaft.

[0038] The output shaft 11 is rotatably mounted by means of a bearing 7 accommodated in the first housing part 1.

[0039] A second housing part 2 is connected to the first housing part 1 and, together with the first housing part 1, defines the lubricating oil-filled transmission interior of the transmission.

[0040] The second housing part accommodates a bearing 14, which also rotatably supports the output shaft 11 and, together with an angular contact bearing 12, which is accommodated in a bearing flange 13 that is connected to the second housing part 2, forms the output bearing, i.e. the output-side bearing of the output shaft 11.

[0041] The output shaft 11 is non-rotatably connected to a gear 4 mounted thereon, which meshes with a gear 5 mounted on a shaft 10 and non-rotatably connected to this shaft 10. The shaft 10 is arranged parallel to the output shaft 11, so that both shafts are available as an extruder drive.

[0042] The two shafts 10 and 11 have the same diameter and can therefore be used for the same torque. Preferably, the two shafts 10 and 11 have the same speed.

[0043] A first bearing 3 of the shaft 10 is accommodated in the first housing part 1. However, this bearing 3 is accommodated in the wall of the first housing part 1 arranged opposite the bearing 7 of the output shaft 11.

[0044] The first housing part 1 has bearings not only for the input shaft 6 but also for the intermediate shafts. First bearings are housed in a first side wall of the first housing part 1, and the remaining bearings are housed in a second side wall opposite this first side wall.

[0045] The first side wall is arranged on the side of the second side wall facing away from the second housing part 2.

[0046] The second housing part 2 is arranged and aligned in contact with the second side wall.

[0047] Bearing 3 of shaft 10 is thus housed in the second side wall. However, the output bearing of shaft 10 is housed in the second housing part 2 and is designed in the same way as the output shaft 11. The flange part 8, which, like the flange part 13, is housed in the second housing part 2, enables quick and easy replacement of the angular contact bearing 9 or 12.

[0048] The output shaft 11 is designed in one piece, i.e. in one part, and preferably protrudes on the side of the second housing part 2 facing away from the input shaft 6.

[0049] In the axial direction, the output shaft 11 covers the entire area covered in the axial direction by a respective intermediate shaft and also the area covered in the axial direction by the shaft 10. However, the area covered in the axial direction by the shaft 10 overlaps with the axial area covered by the respective intermediate shaft.

[0050] According to the invention, a double-shaft output is made possible by the attachment of the second housing part 2.

[0051] In the area of ​​the side wall of the first housing part 1 through which the output shaft 11 passes, a bearing receptacle is preferably formed in the side wall. Thus, by incorporating a bearing and removing the second housing part 2 together with the second shaft 10, a different transmission variant can be produced that has only a single output shaft 11. The invention thus offers the advantage of making a high variety of transmission variants possible with a small number of parts.

[0052] List of reference symbols

[0053] I Housing part 2 Housing part

[0054] 3 camps

[0055] 4 gear

[0056] 5 gear

[0057] 6 input shaft 7 bearing

[0058] 8 Bearing flange

[0059] 9 Bearings, especially angular contact bearings

[0060] 10 Wave

[0061] II output shaft 12 bearings, especially angular contact bearings

[0062] 13 Bearing flange

Claims

Patent claims:

1. Gearbox comprising a first housing part and a second housing part, wherein the first housing part has a first side wall and a second side wall, wherein a first bearing of the driving shaft and / or a first bearing of an intermediate shaft of the gearbox is received in the first side wall, wherein a second bearing of the driving shaft and / or a second bearing of an intermediate shaft of the gearbox is received in the second side wall, wherein a first bearing of the driven shaft is received in the first side wall, characterized in that an output bearing of the driven shaft is received in the second housing part, wherein a first gear is non-rotatably connected to the driven shaft, which is in mesh with a second gear which is non-rotatably connected to a second shaft, wherein a first bearing of the second shaft is arranged in the second side wall of the first housing part.wherein an output bearing of the second shaft is accommodated in the second housing part, wherein the second shaft is aligned parallel to the output shaft.

2. Gearbox according to claim 1, characterized in that the first gear is identical to the second gear.

3. Gearbox according to one of the preceding claims, characterized in that the speed of the driven shaft is always equal to the speed of the second shaft.

4. Gearbox according to one of the preceding claims, characterized in that the output bearing of the driven shaft has a bearing which is received in the second housing part, and a bearing receiving part, in particular a bearing flange, wherein an angular contact bearing is received in the bearing receiving part for supporting the driven shaft, wherein the flange part is detachably connected to the second housing part.

5. Gearbox according to one of the preceding claims, characterized in that the output bearing of the second shaft has a bearing (3) which is received in the second housing part, and a bearing receiving part (8), in particular a bearing flange, wherein an angular contact bearing (9) is received in the bearing receiving part (8) of the output bearing of the second shaft (10) for supporting the driven shaft, wherein the flange part is detachably connected to the second housing part.

6. Gearbox according to one of the preceding claims, characterized in that the second housing part is in contact with the second side wall of the first housing part.

7. Gearbox according to one of the preceding claims, characterized in that the first side wall is spaced apart from the second housing part.

8. Gearbox according to one of the preceding claims, characterized in that the first housing part is connected to the second housing part in a particularly oil-tight manner.

9. Gearbox according to one of the preceding claims, characterized in that the first housing part is designed in two parts, wherein the two parts of the first housing part are connected to each other at a parting plane which bisects the bearing receptacles of the first bearing of the driven shaft and bisects the bearing receptacle of the first bearing of the second shaft.

10. Gearbox according to one of the preceding claims, characterized in that the respective bearing mounts of the output bearings of the driven shaft and the second shaft are made in one piece, in particular and are spaced apart from the parting plane.

11. Gearbox according to one of the preceding claims, characterized in that the second housing part has a third and a fourth side wall, wherein the output bearing of the driven shaft and the output bearing of the second shaft are arranged and / or received in the fourth side wall, wherein the third side wall is pressed against the second side wall of the first housing part by means of screws, wherein a flat seal is arranged between the second side wall of the first housing part and the third side wall of the second housing part.

12. Gearbox according to one of the preceding claims, characterized in that the first side wall is aligned parallel to and spaced apart from the second side wall, wherein the third side wall is aligned parallel to and spaced apart from the second side wall, wherein the fourth side wall is aligned parallel to and spaced apart from the third side wall.

13. Gearbox according to one of the preceding claims, characterized in that the driven shaft passes through a bearing receptacle formed and / or shaped in the second side wall of the first housing part, in particular in the center, in particular wherein a free space filled at least partially with lubricating oil is arranged between the driven shaft and this bearing receptacle, in particular i.e. no bearing is accommodated in this bearing receptacle.

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