DE102014207283A1 - Pre-assembled gear shaft unit - Google Patents

Abstract

The invention relates to a preassembled gearwheel (2) bearing shaft unit (1) for installation in housings (26) through at least one through opening (28, 29) arranged in the wall of the housing (26), the housing (26) in the area of this The through opening (28, 29) is free of a parting line; - With a shaft (3) and at least one gearwheel (2) connected in a rotationally fixed manner to the shaft (3); - With at least one bearing unit (5) arranged outside the gearwheel (3) in the region of a shaft end (19), comprising at least one bearing (8) and an assembly housing (11) enclosing the bearing (8) radially and at least partially in the axial direction; - With connection devices (13) on the assembly housing (11) for attachment to the housing (26).

Description

The invention relates to a preassembled gear shaft unit for installation in housings, in particular gear housings. The invention further relates to a transmission, in particular integral transmission and a method for mounting a preassembled gear shaft unit for installation in housings, which are free of a parting line in the installation area.

Transmission designs with a plurality of gears mounted on different shafts, make high demands on the housing configuration in order to assemble and store them with correspondingly little effort. In particular, so-called integral transmission with at least three pinions, which mesh with a gear, in particular large gear for the realization of a translation into slow and whose bearing axes are arranged in different planes, condition housing from a plurality of housing parts. These are characterized in addition to a large number of components by a complex assembly.

An integral transmission is understood to mean a transmission which is used in compressor and / or expander systems.

The invention therefore an object of the invention to develop a transmission such that the housing design can be simplified according to required storage of gear-carrying waves in different levels or a simplified method for mounting such waves is possible.

The solution according to the invention is characterized by the features of claims 1, 7 and 10. Advantageous embodiments are described in the subclaims.

According to the invention, a gearwheel with a shaft and a bearing unit is preassembled as a structural unit, in particular a shaft unit, which can be inserted into a housing via at least one passage opening, in particular can be inserted.

• – mit einer sich entlang einer Längsachse erstreckenden Welle;
• – mit zumindest einem drehfest mit der Welle verbundenen Zahnrad;
• – mit zumindest einer außerhalb des Zahnrades im Bereich eines Wellenendes angeordneten Lagereinheit;
• – die Lagereinheit umfasst zumindest ein Lager, welches zwischen zwei an der Welle vorgesehenen axialen Anschlagflächen angeordnet ist;
• – mit einem das Lager radial und wenigstens teilweise in axialer Richtung umschließenden Montagegehäuse;
• – mit Anschlusseinrichtungen am Montagegehäuse zur Befestigung am Gehäuse.

The preassembled gear-carrying shaft unit for installation in housings by means of at least one passage opening arranged in the wall, wherein the housing is free of a parting line in the region of the passage opening, is characterized by the following features:

• - With a shaft extending along a longitudinal axis;
• - With at least one rotatably connected to the shaft gear;
• - With at least one outside the gear in the region of a shaft end arranged bearing unit;
• - The bearing unit comprises at least one bearing which is arranged between two provided on the shaft axial abutment surfaces;
• - With a bearing radially and at least partially enclosing in the axial direction mounting housing;
• - With connection devices on the mounting housing for attachment to the housing.

The execution of a preassembled shaft unit allows complete and easy installation of these in housings, in particular gear housings in areas with through-opening and free of a parting line. In complex transmission configurations, the cost of the housing and the required housing parts training of each other to be brought into operative connection areas can be reduced and can be dispensed with connecting means. The connection is made solely via the mounting housing, which is modified for individual shaft units as a function of the given boundary conditions in the connection area at the respectively provided connection housing.

• – eine Dichtfläche oder ein Flächenbereich zum Halten/Fixieren zumindest einer Dichteinrichtung;
• – Bestandteile eines Schmiermittelversorgungssystems, insbesondere Anschlüsse zur Zufuhr/Abfuhr von Schmiermittel zum/vom Lager;
• – Verbindungskanäle zwischen Anschlüssen
• – Anschluss- und/oder Tragflächenbereiche für weitere Funktionseinrichtungen
• – Einrichtungen zur Erfassung von Ist-Werten von Zustands- und/oder Prozessgrößen, insbesondere Sensoren;
• – Flächenbereiche zur Anlage und/oder Zentrierung an einem Anschlusselement;
• – Einrichtungen zum Tragen oder Halten der Welleneinheit.

In a particularly advantageous development, at least one functional device from the group mentioned below or a combination thereof is provided or formed on the mounting housing:

• A sealing surface or a surface region for holding / fixing at least one sealing device;
• - Components of a lubricant supply system, in particular connections for the supply / removal of lubricant to / from the camp;
• - Connection channels between connections
• - Connection and / or wing areas for other functional devices
• - means for detecting actual values of state and / or process variables, in particular sensors;
• - Surface areas for conditioning and / or centering on a connection element;
• - Facilities for carrying or holding the shaft unit.

Under a functional device are inter alia - but not conclusively - means, components, elements, assemblies understood, which serve as an example, the position fixation and attachment of the shaft unit to the housing, for lubricant supply, realization of a sealing function or other additional functions, such as influencing the operation. Centering and surface areas for attachment to a connection area on the housing can be arbitrarily aligned and configured.

The functional concentration by one or more functional devices on the mounting housing allows the displacement required to ensure additional functions measures from the actual housing in the mounting housing and thus a further simplification of the transmission housing. Furthermore, it is possible to respond flexibly to corresponding connection boundary conditions via correspondingly designed mounting housings or to adapt a specific shaft gear configuration by varying the mounting housings for mounting in housings with different connection geometries.

The at least one gear can preferably be designed integrally with the shaft or is non-positively and / or positively connected to the shaft.

With regard to the execution of the bearing there are a number of possibilities. This can be functionally designed as a radial, axial or combined axial / radial bearing. Conceivable are designs as rolling bearings or plain bearings.

The gear may according to a first embodiment be an integral part of the shaft, i. executed with this one-piece. In a second embodiment, the gear can be non-positively or positively connected to the shaft.

In a particularly advantageous embodiment, the preassembled gear shaft unit is used as a pinion shaft for installation in housings of transmissions, in particular integral transmissions. The housing of such transmission consists of at least two housing parts. In the housing, a spur gear and at least two meshing with this gears are arranged and stored, wherein the bearing axes of the spur gear and a gear on a theoretical connection axis or in a plane and they are stored in the region of the parting line between the two housing parts in the housing. The further gear is then mounted outside the parting line in the housing and can be inserted in combination with the shaft as a preassembled shaft unit according to the aforementioned embodiments in the housing through a passage opening. In detail, the spur gear and the at least two gear wheels are rotatably connected to a respective shaft or integral with this running and the spur gear and a first gear bearing shafts are mounted in the region of the parting line between the two housing parts in the housing. The housing has, outside the parting line, a passage opening, via which a preassembled shaft unit carrying the further gear wheel according to one of Claims 1 to 6 is introduced into the housing and connected to the housing via the mounting housing. That the position fixation of the shaft unit and support on the housing via the mounted with this mounting housing. The bearing of the shaft itself is thus not directly in the housing but on the mounting housing in the housing of the transmission.

According to a first embodiment, the shaft unit may be cantilevered in the housing, according to a further second embodiment, the bearing takes place on both sides of the gear in the housing.

• – Bereitstellung einer Zahnrad tragenden Welleneinheit entsprechend vorbeschriebener Ausführungen, insbesondere nach einem der Ansprüche 1 bis 6;
• – Bereitstellung eines Gehäuses des Getriebes mit zumindest einer Durchgangsöffnung in einem von einer Trennfuge freien Bereich des Gehäuses, wobei die Durchgangsöffnung eine Mindestgröße aufweist, die größer dem Außendurchmesser des Zahnrades ist;
• – Einführen der vormontierten Zahnrad tragenden Welleneinheit in das Gehäuse über die Durchgangsöffnung bis in die Einbauposition;
• – Befestigung der vormontierten Zahnrad tragenden Welleneinheit am Gehäuse.

The method for mounting a gear-carrying shaft unit in a gearbox in a region of the housing which is free of a parting line is characterized by the following features:

• - Providing a gear-carrying shaft unit according to the above-described embodiments, in particular according to one of claims 1 to 6;
• - Providing a housing of the transmission with at least one passage opening in a part of the housing which is free from a parting line, wherein the passage opening has a minimum size which is greater than the outer diameter of the gear wheel;
• - Introducing the preassembled gear bearing shaft unit in the housing via the through hole to the installation position;
• - Attaching the preassembled gear bearing shaft unit to the housing.

The attachment is made by attaching the mounting housing to the housing of the transmission. The attachment can be done in different ways. Conceivable are positive or positive connections or a combination of these.

In a particularly advantageous manner, the sealing function relative to the housing environment is taken over by the assembly housing by the arrangement of the individual functional devices on the mounting housing.

The assembly takes place by plugging in and fastening on the housing, in particular in the area facing the environment end wall area. In a first embodiment with flying mounting projecting from the bearing unit shaft end projects into the interior of the housing. In a second embodiment, the storage of the shaft unit takes place on both sides in a housing. For this purpose, a further, a bearing unit receiving one-sided open recess or further passage opening is provided in the housing on one of the wall with the passage opening opposite wall. The preassembled gear-carrying shaft unit is moved into the housing via the through-hole until it reaches its installation position in the housing under the introduction of the preassembled at the latter Bearing unit free shaft end in the arranged in the recess or other passage opening bearing unit.

According to a particularly advantageous embodiment, the further passage opening is characterized by a diameter which is equal to or greater than the maximum diameter of the guided in the installed position of the shaft portion of the shaft end. The assembly takes place here with an assembly tool with extension of the free of the preassembled storage unit shaft end by attaching a mounting tool to this. The assembly tool is to run in the simplest case as a tubular element which surrounds the free end of the bearing unit shaft end at least partially in the circumferential direction. Other versions are conceivable. The assembly tool is guided through the passage opening in the direction of the further passage opening and through this carrying along the preassembled gear shaft unit and spent the preassembled gear shaft unit in the installed position.

The solution according to the invention is explained below with reference to figures. The following is shown in detail:

1 shows an example of an advantageous embodiment of a gear-carrying shaft unit;

2 shows by way of example a gear-carrying shaft unit in a first mounting position with mounting tool for two-sided storage in a housing;

3 shows by way of example a gear-carrying shaft unit in installation position with double-sided storage in a housing;

4a and 4b show an example of an advantageous application in a transmission, in particular integral transmission;

5 shows by way of example a further possible application of gear-carrying shaft units in a transmission;

6a and 6b branch by way of example an advantageous application of a transmission in a compressor unit;

7 shows an example of a gear-carrying shaft unit in installation position in flying storage in a housing.

The 1 illustrates in a schematic simplified representation of a particularly advantageous embodiment of a pre-assembled, at least one gear 2 carrying wave unit 1 for installation in housings, in particular gear housings in areas free of a parting line in the housing via passage openings in this. The preassembled gear 2 carrying shaft unit 1 includes a, along a longitudinal axis L _A extending shaft 3 and at least one rotatably connected thereto gear 2 , The area of the arrangement of the gear wheel 2 viewed in the longitudinal direction of the longitudinal axis L _A is also as a gear-carrying area 4 designated. The gear 2 can in one particularly advantageous embodiment as an integral part integral with the shaft 3 be executed. It is also conceivable the possibility not shown here of the realization of a rotationally fixed connection between gear 2 and wave 3 over a force or form fit. For installation in gearboxes with housings free from a parting line, the gearwheel includes 2 carrying shaft unit 1 Furthermore, a storage unit 5 , The storage unit 5 is based on the course of the longitudinal axis L _A in the axial direction of the gear 2 juxtaposed. The arrangement takes place in the axial direction spaced from the gear 2 and preferably in the region of a first shaft end 19 ,

The storage unit 5 includes at least one in the axial direction between two on the shaft 3 arranged axial abutment surfaces 6 and 7 arranged warehouse 8th , This arrangement area is as a storage area 9 designated. In the simplest case, the two axial abutment surfaces 6 and 7 , which are aligned in the opposite direction facing each other, on the shaft 3 educated. The wave 3 has for this purpose a bearing seat forming paragraph 10 on. The warehouse 8th is designed as a combined axial-radial bearing. With regard to the concrete embodiment, there are a variety of possibilities. The warehouse 8th itself can be designed as a rolling or sliding bearing, preferably the execution is carried out in a particularly advantageous application as a plain bearing, wherein the bearing 8th is designed as a Kippsegmentlager with respect to realizing additional functions. The gear 2 , the wave 3 as well as the camp 8th the preassembled shaft unit 1 are arranged coaxially with each other.

The fixation of the warehouse 8th in the axial and in the radial direction via a bearing housing, which during installation of the shaft unit 1 is mounted in housings to these and is therefore used as a mounting housing 11 designated. This is used in the preassembled state of the gear 2 carrying wave unit 1 before mounting in a gear unit fixing the bearing 8th in the radial and axial direction and after installation in a housing of the absorption of forces and introduction of this into the housing. The mounting housing 11 encloses the camp 8th on the outer circumference 12 in the circumferential direction. Furthermore encloses the mounting housing 11 the warehouse 8th over at least a portion of its axial extent with respect to the longitudinal axis L _A. The mounting housing 11 is designed to be suitable, with the housing of the transmission, in which the gear 2 carrying shaft unit 1 is integrable to be connected. For this purpose, the mounting housing 11 at least one, preferably a plurality of connection devices 13 on. These can be designed differently. The execution is dependent on the selected type of attachment of the storage unit 5 on the housing and the boundary conditions specified by the configuration on the housing in the connection area.

The mounting housing 11 has stop or connection surfaces 14 , Which arrive at the mounting on surface areas of a housing for concern and possibly also take over the function of sealing surfaces with. In the case shown, the mounting housing 11 as a hollow cylindrical, a through hole 15 exhibiting component executed, which in the region of its inner circumference 16 with the outer circumference 12 of the camp 8th interacts and on its outer circumference 17 Has surface areas which cooperate with complementary surface areas on the housing, at least can abut against these. The arrangement of the warehouse 8th receiving area and the investment and connection surfaces can be considered in the axial direction in a common plane and / or at least partially offset. Because the mounting housing 11 at the same time the function of a housing cover 18 should take over into a gear housing after installation, this extends beyond the shaft end 19 out and the through hole 15 is by means of a cover 20 locked. In the simplest case, this is the mounting housing 11 viewed in the axial direction in the installed position in a first region and a second region, wherein the second region in the axial direction over the shaft end 19 is executed extending and in its area the passage opening 15 over the cover 20 is closable.

The devices ensuring the connection function in a housing are designed and arranged such that they are suitable, the shaft 3 with the gear 2 completely flying in the housing, as an example in installation position of the shaft unit 1 in a housing 26 in 5 reproduced, or in cooperation with a further, to be arranged in the housing bearing unit, support on both sides.

In addition to the functional devices to ensure the connection function, in particular positional fixation of the shaft unit 1 in the radial and axial directions are in an advantageous development of other functions in the mounting housing 11 integrated. These functions include the sealing function and / or lubricant supply, in particular supply and discharge. Further possible functions are bearing and support functions for the arrangement of detection device for those in the region of the shaft unit 1 , especially of the warehouse 5 or the wave 3 to be detected actual values of to be determined at these state and / or process variables.

The in the 1 illustrated embodiment shows an advantageous embodiment of the mounting housing 11 , which surface areas 21 for the arrangement of sealing devices 35 , Connections 22 and connection channels 23 for the guidance of lubricant. The mounting housing 11 includes for example two connections 22 on the inner circumference 16 and outer circumference 17 , These are via at least one connecting channel 23 connected with each other. The connections 22 can with complementary connections to connecting elements, especially in stock 5 and / or communicatively connected to the housing. The term connection 22 is to be understood functionally and not limited to a specific execution of the connection.

The connection channel 23 extends here by way of example in the radial direction through the wall of the mounting housing 11 , The mounting housing 11 is designed such that it is fixed to a housing fixed.

The mounting housing 11 further includes connection means 24 for coupling with means for transporting the shaft unit 1 or for ease of assembly.

The stop surfaces 6 . 7 , Which are realized in the illustrated case on the shaft heels, can also in a non-illustrated embodiment of separate components, the rotationally fixed to the shaft 3 are formed.

The execution of the storage unit 5 can depending on the training of the storage area 10 either in one piece or else, in the 1 illustrated embodiment of the storage area 9 over shaft heels 10 at least in two parts. Regarding the mounting housing 11 apply analogous to the bearing 5 in terms of its position relative to the mounting housing 11 to fix. The mounting housing 11 preferably has only one parting line.

It is also conceivable, however, a frictional connection, for example by shrinking, which is a one-piece design of the mounting housing 11 allowed.

The inventively executed preassembled gear-carrying shaft unit 1 can be stored in a flying housing. In this case, the mounting housing takes over 11 Completely the function of coupling and one-sided storage over the storage unit 5 , In a particularly advantageous embodiment, such preassembled shaft units 1 but always stored on both sides. This is indicated by the wave 3 at the end of the shaft 19 opposite arranged shaft end 25 and thus on the of the storage unit 5 opposite side on the gear 3 of the selected end region to a region which is suitable to be received by a bearing unit or to be supported on this. The wave end 25 For this purpose, in installation position in a housing, not shown here, in the area of this further bearing unit with a diameter d _25A , which corresponds to the inside diameter of the bearing to be arranged in this area.

The 2 and 3 clarify the process steps in the assembly of an inventively designed preassembled gear 2 carrying wave unit 1 for installation in a housing 26 , on the example of a gearbox housing. 2 shows the arrangement of the preassembled shaft unit 1 in the mounting position prior to insertion into a housing 26 - first mounting position. Visible here is the preassembled gear 2 carrying shaft unit 1 , furthermore the housing 26 in an axial section with integrated further storage unit 27 , The housing 26 points along the bearing axis LA of the shaft 3 in the installed state at spaced-apart and opposing walls arranged passage openings 28 and 29 on. Here is the first through hole 28 characterized by a diameter d ₂₈ equal to or greater than the diameter d _{25A of} the shaft end region 25 is, preferably the outer diameter d _{27 of} the storage unit 27 corresponds to if in this area the storage unit 27 already pre-assembled. In this case, the inner diameter of the bearing unit corresponds 27 the outer diameter d _{25A of} the area of the shaft end 25 , which in installation position in the area of the storage unit 27 is arranged.

The second passage opening 28 through which the shaft 3 with the gear 2 is characterized by a minimum diameter larger than the outer diameter of the gear 2 is. Regarding the formation of the through hole 28 exists depending on the design of the mounting housing 11 , in particular the arrangement and design of the investment and connection surfaces 14 a variety of ways.

In the case shown, the shaft unit 1 with the mounting housing 11 in the radial and axial direction sealing in the passage opening 26 introduced, with surface areas on the outer circumference 17 of the mounting housing 11 at surface areas 30 on the housing 26 in the area of the passage opening 28 , which serve as a radial and axial contact surface, reach the concern.

In the 2 is the preassembled, gear 2 carrying shaft unit 1 in still unmounted condition with the tool 31 prior to movement along the theoretical connection axis between both passage openings 27 . 28 played. The assembly tool 31 surrounds the shaft 3 non-positively and / or positively on a portion of its outer circumference and allows by insertion along the direction of the arrow insertion of the shaft 3 with gear 2 and storage unit 5 in the case 26 , The assembly tool 31 is designed to be suitable through both passage openings 27 . 28 to be passed through. In a particularly advantageous embodiment, the assembly tool 31 two or more areas of different outer dimensions, in particular diameter and a conical transition region between them, in order to pass through the bearing unit 27 not to damage this. The assembly tool 31 can be made in one or more parts.

The 3 clarifies the assembled state of the gear 2 carrying wave unit 1 in the case 26 - Installation position. Visible here is the interaction of the individual functional surfaces on the mounting housing 11 with the surface areas 30 on the housing 26 , In the illustrated case, there is a partial area of the outer circumference 17 on a radially inner contact surface on the housing 26 at. Furthermore, another axially aligned surface area on the outer circumference 17 provided, which on an axially aligned surface area, in particular an end face of the housing 26 come to the concern.

Further in 3 reproduced is the arrangement of the gear 2 in installation position in cooperation with another spur gear 34 , The gear 2 can be designed as a pinion with straight or helical teeth.

4a illustrates in a schematic simplified representation of a main field of application for a pre-assembled gear designed according to the invention 2 carrying shaft unit 1 as a pinion shaft. Such pinion shafts are used in multi-shaft gear arrangements for impeller drive in compressor systems use. A particularly advantageous application of a preassembled shaft unit according to the invention 1 is a gear assembly in which the storage of the pinion shaft is carried in a housing portion which is free of a parting line.

4a exemplifies an embodiment of a transmission 33 with a spur gear 34 and at least three with this meshing pinions R1, R2 and 2 how this can be used as integral transmission. Usually integral gears are driven by electric motors, sometimes in combination with turbines, as exemplified in US Pat 6 played. With an integral transmission is it is possible to combine several compressor and expansion stages on one transmission.

In the preassembled shaft unit according to the invention 1 in the form of a pinion shaft may be a, a drive or driven pinion bearing shaft. With regard to the concrete transmission configuration, there are no restrictions. It is crucial that in the arrangement area of the pinion shaft in the housing 26 no parting line is provided.

The gear 33 includes a spur gear 34 and two with this meshing pinion R1, R2. The bearing axes LR1, LR2 and L34 of the pinion R1, R2 supporting shafts and the spur gear 34 are arranged in one plane. In this runs also the parting line 32 of the housing 26 and divides the housing into a first and a second housing part 26.1 . 26.2 , Outside the parting line 32 is the pinion in the form of the gear 2 and thus the preassembled shaft unit 1 arranged. For the assembly of this pinion or the pinion shaft in the form of a preassembled shaft unit 1 according to the embodiments described above, the housing 26 corresponding through holes, which allow the shaft 2 introduce with arranged on this pinion through the through hole and the mounting housing 11 on the housing 26 to fix.

4b shows an example of a transmission 33 according to 4a in perspective view. Recognizable here are the bearings of the pinion R1, R2 bearing shafts and the gear 2 in the form of a plug-in pinion shaft 1 , The mounting housing 11 , in particular the cover of the mounting housing 11 is executed here divided.

The 5 shows an example of another possible embodiment of a transmission 33 in which gearwheel bearing shaft units 1 can be used. Here, by way of example, the pinion R1, R2 supporting waves and the shaft of the spur gear 34 stored in a plane and can thus be stored in a parting line in a transmission housing. The pinion R3 and R4 bearing shafts and the gear 2 Can be worn by gear shaft units 1 be formed.

The 6a shows an example of a configuration of a compressor unit 36 with a gear 33 according to the 4 and 5 as an advantageous application. Visible is the coupling of the spur gear 34 to the drive shaft and thus the prime mover in the form of a turbine 37 , In contrast, shows 6b the coupling of the spur gear 34 in addition to an electric machine 38 ,

7 shows an example of an embodiment of the shaft unit 1 according to 3 the installation position with flying storage in the housing 26 ie the wave 3 is free at its free shaft end of a storage in the housing 26 ,

LIST OF REFERENCE NUMBERS

1

 Gear bearing shaft unit

2

 gear

3

 wave

4

 Gear carrying area

5

 storage unit

6

 stop surface

7

 stop surface

8th

 camp

9

 storage area

10

 paragraph

11

 mounting housing

12

 outer periphery

13

 connecting device

14

 Investment and connection area

15

 Through opening

16

 inner circumference

17

 outer periphery

18

 housing cover

19

 first wave end

20

 cover

21

 area

22

 connection

23

 connecting channel

24

 connecting device

25

 shaft end

26

 casing

27

 storage unit

28

 Through opening

29

 Through opening

30

 area

31

 assembly tool

32

 parting line

33

 transmission

34

 spur gear

35

 sealing device

36

 compressor plant

37

 turbine

38

 Electric machine, electric motor

R1, R2

 pinion

R3, R4

 pinion

d ₂₈

Inner diameter of the passage opening 28

d ₂₇

Outer circumference of the storage facility 27

d _25A

Outer circumference shaft end 25

L _A

 longitudinal axis

LR1, LR2, L2, L34

 bearing axles

Claims (13)

Pre-assembled gear ( 2 ) supporting shaft unit ( 1 ) for installation in housings ( 26 ) by at least one, in the wall of the housing ( 26 ) arranged passage opening ( 28 . 29 ), the housing ( 26 ) in the region of this passage opening ( 28 . 29 ) is free of a parting line - with a shaft extending along a longitudinal axis (L _A ) ( 3 ); - With at least one rotationally fixed to the shaft ( 3 ) connected gear ( 2 ); - with at least one outside of the gear ( 3 ) in the region of a shaft end ( 19 ) arranged storage unit ( 5 ); - the storage unit ( 5 ) comprises at least one warehouse ( 8th ), which is between two on the shaft ( 3 ) provided axial stop surfaces ( 6 . 7 ) is arranged; - with one the bearing ( 8th ) radially and at least partially in the axial direction enclosing mounting housing ( 11 ); - with connection devices ( 13 ) on the mounting housing ( 11 ) for attachment to the housing ( 26 ). Pre-assembled gear ( 2 ) supporting shaft unit ( 1 ) according to claim 1, characterized in that on the mounting housing ( 11 ) is provided or formed at least one functional device from the group mentioned below or a combination thereof; A sealing surface or a surface region for holding / fixing at least one sealing device; - Components of a lubricant supply system, in particular - Connections for supply / removal of lubricant to / from the bearing ( 8th ); - Connecting channels between terminals - surface areas for conditioning and / or centering on a connection element; - connection and / or wing areas for functional devices - means for detecting actual values of state and / or process variables, in particular sensors; - means for supporting or holding the shaft unit ( 1 ). Pre-mounted gear shaft unit according to one of claims 1 or 2, characterized in that the at least one gear ( 2 ) integral with the shaft ( 3 ) is executed. Pre-assembled gear ( 2 ) supporting shaft unit ( 1 ) according to one of claims 1 or 2, characterized in that the at least one gear ( 2 ) positively and / or positively with the shaft ( 3 ) connected is. Pre-assembled gear ( 2 ) supporting shaft unit ( 1 ) according to one of claims 1 to 4, characterized in that the bearing ( 8th ) is embodied as at least one element from the following group: - combined radial / thrust bearing - rolling bearing - slide bearing Pre-assembled gear ( 2 ) supporting shaft unit ( 1 ) according to one of claims 1 to 5, characterized in that the gear ( 2 ) is designed as a pinion with straight or helical teeth. Transmission ( 33 ), in particular integral transmission - with a housing ( 26 ) of at least two housing parts ( 26.1 . 26.2 ); - with one in the housing ( 26 ) arranged and mounted spur gear ( 34 ) and at least two with this meshing gears (R1, R2, 2 ), wherein the bearing axes (L34) of the spur gear ( 34 ) and a gear (R1, R2) lie in one plane and in the region between the two housing parts ( 26.1 . 26.2 ) formed parting line ( 32 ) in the housing ( 26 ) are stored; characterized in that the at least one further gear ( 2 ) outside the parting line ( 32 ) in the housing ( 26 ) is stored. Transmission ( 33 ) according to claim 7, in which the spur gear ( 34 ) and the at least two gears (R1, R2, 2 ) rotatably with one shaft ( 3 ) are connected or integral with this and the spur gear ( 34 ) and a first gear (R1, R2) carrying waves in the region of the parting line ( 32 ) between the two housing parts ( 26.1 . 26.2 ) in the housing ( 26 ) are stored; characterized in that the housing ( 26 ) outside the parting line ( 32 ) a passage opening ( 29 ), via which a preassembled, the further gear ( 2 ) supporting shaft unit ( 1 ) according to one of claims 1 to 6 introduced into the housing and the mounting housing ( 11 ) is connected to this. Transmission ( 33 ) according to claim 7 or 8, characterized in that the preassembled gear ( 2 ) supporting shaft unit ( 1 ) additionally from the storage unit ( 5 ) free shaft end ( 25 ) in the housing ( 26 ) of the transmission ( 33 ) is stored. Transmission ( 33 ) according to one of claims 7 to 9, characterized in that the spur gear ( 34 ) or with this intermeshing intermediate gear rotatably connected to a drive shaft (A), and the spur gear ( 34 ) meshes with at least one output gear, the axis of rotation offset in the vertical direction to the axis of rotation of the spur gear ( 34 ) and / or Zwischenrades is arranged; characterized in that the at least one output gear from the gear of a preassembled shaft unit ( 1 ) is formed according to one of claims 1 to 6. Method of mounting a gear ( 2 ) carrying wave unit ( 1 ) in a transmission ( 33 ), in an area of the housing ( 26 ), which is free of a parting line ( 32 ); characterized by the following features: - providing a gear ( 2 ) carrying wave unit ( 1 ) according to any one of claims 1 to 6; - Provision of a housing ( 26 ) of the transmission ( 33 ) with at least one passage opening ( 29 ) in a region of the housing which is free of a parting line ( 26 ), wherein the passage opening ( 29 ) has a minimum size which is greater than the outer diameter of the gear ( 2 ); - inserting the preassembled gear ( 2 ) carrying wave unit ( 1 ) in the housing ( 26 ) via the passage opening ( 29 ) to the installation position; - fixing the preassembled gear ( 2 ) carrying wave unit ( 1 ) on the housing ( 26 ). Method of mounting a gear ( 2 ) carrying wave unit ( 1 ) in a transmission ( 33 ) according to claim 11, wherein the shaft unit ( 1 ) on both sides in a housing ( 26 ) is stored; characterized by the following features: providing a further storage unit ( 27 ) receiving unilaterally open recess or further passage opening ( 28 ) having wall portion in the housing ( 26 ); - inserting the preassembled gear ( 2 ) carrying wave unit ( 1 ) in the housing ( 26 ) via the passage opening ( 29 ) to the installation position of the shaft unit ( 1 ) in the housing ( 26 ) with the introduction of the pre-assembled storage unit ( 5 ) free shaft end ( 25 ) in the recess or further passage opening ( 28 ) arranged storage unit ( 27 ). Method of mounting a gear ( 2 ) carrying wave unit ( 1 ) in a transmission ( 33 ) according to claim 12, wherein the further passage opening ( 28 ) is characterized by a diameter which is equal to or greater than the maximum diameter of the installation position of the shaft ( 2 ) through this guided area of the shaft end ( 25 ); characterized by the following features: - extension of the pre-assembled storage unit ( 5 ) on the shaft ( 2 ) free end ( 25 ) the preassembled gear ( 2 ) carrying wave unit ( 1 ) by applying an assembly tool ( 31 ) to this; - passing the assembly tool ( 31 ) from the passage opening ( 29 ) in the direction of the further passage opening ( 28 ) in the housing ( 26 ) taking along the preassembled gear ( 2 ) carrying wave unit ( 1 ) and movement of the assembly tool ( 31 ) with the preassembled gear ( 2 ) carrying wave unit ( 1 ) in the installation position.

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