Belt drive unit for elevator systems, elevator system as well as methods and uses

Abstract

When designing, structuring, and constructing belt drive units for elevator systems, application-specific adaptations may be necessary, particularly depending on the length of the belt drive unit's shaft. A belt drive unit for elevator systems is provided, comprising a shaft, bearings for the shaft, and a housing that at least partially surrounds the shaft and supports the bearings. The housing has a first housing part and a second housing part, which are supported against each other by means of struts. According to the invention, the belt drive unit has a foot designed for mounting the belt drive unit to a machine bed of the elevator system. This foot is designed to engage positively with both the first and second housing parts.This also facilitates length adjustment and ensures a favorable force flow path. The invention also relates to a method for assembling and mounting such a belt drive unit.

Description

Technical field

[0001] The present invention relates to a belt drive unit for elevator systems, comprising a shaft, bearings for the shaft, and a housing that at least partially surrounds the shaft and supports the bearings. The housing comprises a first housing part and a second housing part, which housing parts are supported against each other by means of at least one strut. The present invention further relates to a method for assembling and mounting such a belt drive unit, particularly in combination with optional post-processing steps on the housing, especially before the installation of bearings and the shaft. Finally, the present invention also relates to the use of a multi-part housing in combination with a base for supporting and mounting such a belt drive unit on a machine bed of the elevator system. In particular, the invention relates to a device and method according to the preamble of the respective independent claim. Technical background

[0002] Belt drives for elevator systems typically have high demands on stiffness and robustness, especially since the belt(s) interacting with the drive shaft are subjected to comparatively high forces and speeds over a relatively long (free) belt length. Accordingly, a very clean and highly load-bearing shaft bearing, as well as good support of the shaft bearings within the housing of the respective belt drive and efficient force transmission to the elevator machine bed, are of great importance. In many design applications, this leads to a very stiff housing being achieved through a highly application-specific design, which, however, offers little flexibility in terms of adaptation or transferability to other applications, e.g.if the number of belts needs to change, which is therefore also comparatively expensive.

[0003] According to the current state of the art, the housing is advantageously designed as a single, comprehensive casting, particularly with regard to high rigidity. However, this entails disadvantages such as comparatively high post-processing costs, specific assembly steps, and low variability. Therefore, there is interest in an improved design concept for housings of belt drives for elevator systems.

[0004] An example is publication US 10,207,899 B2, which describes a belt drive housing that can be scaled in size in a relatively simple way.

[0005] Based on the state of the art, there is still a need for belt drive designs that are particularly advantageous with regard to mounting on a machine bed of an elevator system, especially when the belt drives are arranged on a machine bed in the form of a guide rail cover unit, i.e. on top of the ends of a plurality of guide rails. Description - Technical Solution

[0006] The task is to provide a belt drive unit for elevator systems that, on the one hand, allows for a housing that is scalable, particularly in size, and, on the other hand, ensures a particularly advantageous method of support and power transmission to a machine bed. It is also a task to design such a belt drive unit in such a way that its mounting or connection to the machine bed can be implemented advantageously, not least with regard to maintenance and / or dismantling.

[0007] This problem is solved by a belt drive unit according to claim 1, by a method according to the dependent method claim, and by uses according to the dependent use claim. Advantageous embodiments of the invention are explained in the respective dependent claims. The features of the exemplary embodiments described below can be combined with one another unless explicitly stated otherwise.

[0008] A belt drive unit for elevator systems is provided, comprising a shaft and bearings for the shaft and a housing which surrounds the shaft at least partially and supports the bearings, wherein the housing has a first housing part for a first axial section of the shaft and a second housing part for a second axial section of the shaft, wherein the housing parts can be supported / supported against each other by means of at least one strut or the like of housing or stiffening components that are at least substantially axially aligned; According to the invention, it is proposed that the belt drive unit has a foot designed for mounting the belt drive unit to a machine bed of the elevator system, which is configured to interact positively / force-fit with both the first and the second housing part. This also facilitates the customization of a connection between the housing and the machine bed that is particularly advantageous for the respective application, and thus also a comparatively flexible / variable design with regard to optimal force flow (path). Length adjustment can also be achieved in an advantageously simple manner by means of the foot, which can be provided separately from the housing parts, e.g., with regard to a variable number of belts or drive zone sections, for example, with regard to designing the same belt drive unit for either two or three belts.In addition to providing a flexible connection to the machine bed, the foot can also largely fulfill a stabilizing and stiffening structural function. Furthermore, it facilitates the design of the housing components as cast parts.

[0009] For example, the belt drive unit has a one- or two-part foot with two corresponding form-fit / force-fit coupling parts, the foot providing a mounting interface for fastening the belt drive unit in a / the elevator system.

[0010] In this context, "force-fit / form-fit" or "form-fit / force-fit" refers to a connection or coupling that is at least form-fit (advantageously essentially form-fit) and optionally also partially force-fit. For example, a form-fit / force-fit connection is essentially a form-fit connection (e.g., interlocking in the sense of a tongue and groove), in which additional securing of the connection can be provided by individual weld points (the latter, however, can be easily reopened / broken, e.g., during dismantling of the belt drive unit). According to the present invention, a material bond remains purely optional and a supplementary possibility; welding is not common or possible, especially with cast iron; if the joining partners are made of, for example, steel, additional welding can be provided as a supplementary measure.

[0011] According to the present disclosure, the term "foot" is to be understood in particular as a base plate-like component that can be coupled to the housing parts and forms a (mounting) interface to the machine bed. Since the foot also fulfills a (further) stiffening function for the housing, thus acting in the manner of struts that can be installed between the housing parts (namely at one / the lowest circumferential position), the foot is not merely a mounting adapter, but ensures the desired structural cohesion of the housing parts in the area of ​​their (inherently) separate bases. Therefore, the foot is also to be considered a component of at least the belt drive unit (i.e., not of the machine bed), and in a broader sense even a housing component.

[0012] It is understood that the housing components can be supported against each other, at least to a large extent, by at least one strut, thereby ensuring a certain or sufficient rigidity in combination with the positive / force-fit connection to the base; in this respect, the base can also be designed in multiple parts, with the individual parts of the base optionally connected to each other. In other words: Depending on the design of the machine bed and the lower housing section (base) and one or more of the circumferential positions of the at least one strut, the base essentially fulfills (only) an interface function to the machine bed, or also a structural function, in particular for stiffening the housing, especially for improving the mutual support of the housing components.For example, the base is a single piece, and at least one strut is only provided in one / the upper circumferential half of the housing (circumferential position in the 9 o'clock to 3 o'clock range), at least not in the circumferential range from 4 o'clock to 8 o'clock. Therefore, a distinction must be made here between the different stiffnesses of, on the one hand, the assembled housing (including the base) and, on the other hand, the housing of the belt drive unit mounted on the machine bed.

[0013] For example, a total of four components are provided, namely two housing bearing mounting units (or first and second housing part, which can be identical), the foot and a strut.

[0014] The concept according to the invention, to provide the housing parts in a bearing-specific or bearing-position-specific manner and to connect them to a machine bed via a form-fit / force-fit coupling foot, also offers advantages in the following respect: - Modularly designed parts can be used for different machine sizes without requiring any noticeable adjustment effort; - Manufacturing costs, especially those associated with casting relatively large housings (usually not an automatable process), can be significantly reduced, particularly with regard to smaller components and higher production volumes, especially since the absolute number of identical housing castings required for bearing locations can be increased;

[0015] The form-fit / force-fit interaction between housing parts and base described here can also facilitate disassembly or imply the disassembly option, thereby ensuring the following advantages in a particularly comprehensive manner: - Modularity with regard to various machines and associated housing sizes; - Starting from a defined width of a motor, the distance between the bearing points can be easily adjusted without requiring any noticeable design changes; - comparatively small housing component size, which enables / facilitates production on a potting machine (in contrast, the production of a complete housing would no longer be possible due to the excessively large box size); - advantageous material combination: housing parts or bearing points made of cast iron, base made of sheet metal or flat material or a comparable plate;

[0016] Advantageously, the coupling between the base and housing parts is initially designed as a positive-locking connection for power transmission, with a positive-locking or friction-locking connection for positional locking. In other words, in addition to positive locking, friction locking can be provided, particularly for maintaining the respective target position.

[0017] According to one embodiment, the foot is integrally designed as a single piece, advantageously as a base plate. This facilitates, among other things, length adjustment of the mounting interface with regard to application-specific shaft dimensions.

[0018] According to one embodiment, the foot can be reversibly coupled to the housing, particularly for disassembly purposes. This can further increase the flexibility / variability and accessibility within the overall context of the entire elevator system.

[0019] According to one embodiment, the base can be provided (or configured) separately from the housing in a modular fashion and connected to the housing. This can also ensure a high degree of variability with a comparatively lean / cost-effective value chain.

[0020] According to one embodiment, the first housing part is designed for a first bearing and the second housing part for a second bearing, with each housing part having a positive-locking coupling element in a lower area (base) that couples with the corresponding positive-locking coupling element of the base. This also facilitates support and force absorption in the area of ​​particularly stable housing sections, especially in the area of ​​castings or cast housing shells. Advantageously, a male part of the at least positive-locking coupling is provided by the corresponding housing part, and the corresponding female part of the at least positive-locking coupling is provided by the base.

[0021] The force-fit / form-fit interaction or the corresponding coupling can include, for example, a slot connection (especially with slots or tongue-and-groove arrangements aligned orthogonally to the longitudinal axis of the shaft), a screw connection, a plug connection (especially by means of bolts) or similar form-fit contours.

[0022] The present invention can also be described as follows: Starting from a housing construction based on two housing parts (preferably one housing part per bearing), a base initially separate from the housing is designed, and the housing and base are provided with corresponding force-locking / form-locking coupling sections, wherein the creation of the housing, which is intended to be connected to the machine bed, can be achieved by force-locking / form-locking coupling with the force-locking / form-locking base of the respective housing part, whereby on the one hand high strength / stiffness and on the other hand also high dimensional accuracy can be achieved, in particular since the application of heat, e.g. by welding in the base area of ​​the respective housing, is not necessarily required (although individual weld points can / could optionally be provided to increase the load-bearing capacity of the connection between the housing base and the base).The assembled housing, complete with foot, can undergo further machining before additional components of the belt drive unit (e.g., bearings, motor, brake unit, shaft) are installed, allowing the entire assembly to be mounted on the machine bed. With this type of design, length adjustments, for example, due to a wider or longer drive zone of the shaft, can be implemented relatively easily. In particular, the foot (one-piece or multi-piece) and individual struts that support the housing parts against each other can be provided in variable lengths or tailored to specific applications, and the (first and second) housing parts can each be supplied as standard or identical parts.Thus, an advantageous force flow path can be created for each type of torque between the housing component and the machine bed, namely between the drive and the machine bed on the one hand, and between the brake unit and the machine bed on the other. Between these two force flow paths, the housing can be designed to be comparatively slim (especially in terms of material and cost efficiency). Furthermore, the type of mounting interface to the machine bed can be largely independent of the housing components, and the housing components can be supplied unchanged as identical parts. This allows for the relatively cost-effective production of a cast part thanks to high production volumes. In this respect, the base can also be described as a mounting interface module, advantageously connected to the (respective) housing component base by purely force-fit / form-fit connection.This makes the design largely independent of the specific configuration of a machine bed, and in particular, independent of the type of application-specific attachment to the machine bed. The foot can also be provided relatively cost-effectively for specific applications even if it is designed as a single, integral piece, e.g., made from flat material. Alternatively, the foot can be multi-part (in particular, consisting of several flat material sections), especially with a separate intermediate axial section (in the sense of a length compensation element, comparable to the concept of at least one strut between the housing parts), or the foot can be integrally single-piece. Based on the present disclosure, a person skilled in the art can specify an application-specific and advantageous design of the foot.

[0023] According to one embodiment, the base is formed in one piece, particularly from flat material. This results in a particularly robust design. For example, the one- or multi-piece base has an H-shaped outer contour (outline) when viewed from above. Using flat material as the starting material or semi-finished product also allows for application-specific customization at reasonable costs, even for very small production runs or even individual units.

[0024] Alternatively, the foot can be multi-part, with a first foot part and a second foot part supported against each other by an intermediate axial section of the foot. This can further increase variability, particularly with regard to even easier length adjustment. For example, the multi-part foot is formed by several flat material sections, in particular by three rectangular flat material sections, or in particular by flat material sections butted together.

[0025] According to one embodiment, the base is formed from flat material, and the housing parts are cast. This combination of different manufacturing processes and semi-finished products provides a particularly advantageous compromise with regard to the requirements mentioned here, especially with regard to flexibility / variability combined with reasonable costs on the one hand, and with regard to stiffness, advantageous force transmission path, and load-bearing capacity on the other.

[0026] According to one embodiment, the first and second housing parts are supported against each other at at least one circumferential position by at least one strut, in particular at least at an upper / topmost circumferential position (preferably at 12 o'clock). This further simplifies the design of the housing parts, in particular such that the housing parts can be designed primarily to accommodate a corresponding bearing and for end-face coupling with a drive or brake unit, and can otherwise be largely identical in design (especially with an identical connection interface with strut(s)). For example, two or three struts are provided, e.g. distributed over the upper circumferential half, depending on the entry / exit circumferential position of the at least one belt.

[0027] According to one embodiment, a flange or similar mounting means for a motor of the belt drive unit is provided on the end face of the first housing part, and a flange or similar mounting means for a brake unit of the belt drive unit is provided on the end face of the second housing part, or vice versa, in particular such that a drive torque acting on the axial shaft section between the motor and the drive zone can be transmitted, at least to a large extent, via the first housing part and the base into the machine bed, and a braking torque acting on the axial shaft section between the brake unit and the drive zone can be transmitted, at least to a large extent, via the second housing part and the base into the machine bed. This, in combination with a machine bed connection of the respective housing part in the axial section of the corresponding bearing, also enables a very advantageous force flow.

[0028] According to one embodiment, the form-fit / force-fit coupling elements of the housing parts and the base form at least one connection from the following group: screw connection, slotted connection, tongue-and-groove connection, bolt connection. This also offers the advantage of application-specific adaptation to the optimal type of connection. Optionally, this force-fit / form-fit connection can be supplemented by at least one weld point, so that at least a form-fit or substantially force-fit / form-fit connection is created for the respective force flow, which can be further secured, for example, by additional weld points. Based on the present disclosure, a person skilled in the art can determine whether additional material bonding might be advantageous.

[0029] According to one embodiment, the foot has fastening means for attaching the belt drive unit to / onto a machine bed of the elevator system, in particular in the form of screw connections. This allows the connection to the machine bed to be customized in a relatively simple manner. The fastening means include, for example, point-like and / or slot-like fastening holes / bores. Advantageously, the fastening means are arranged in the axial area of ​​the corresponding bearing.

[0030] According to one embodiment, a positive-locking / force-locking coupling element of the respective housing part is arranged in an axial section corresponding to the respective bearing seat (defined by the shaft or housing), in particular at least approximately in exactly the same axial position. This also promotes an advantageous design with regard to force input and force transmission.

[0031] According to one embodiment, the axial distance between the bearing seats corresponds at least approximately to the axial distance between the force-fit / form-fit coupling parts of the housing and / or the base, particularly with a deviation of no more than 10%, preferably no more than 5%. This also promotes an advantageous design with regard to force input and transmission.

[0032] According to one embodiment, the axial position of the corresponding bearing / bearing seat corresponds to the axial position of the corresponding coupling part (on the corresponding housing part and on the base) and to the corresponding mounting interface on the base. This also promotes an advantageous force flow (path). Advantageously, the mounting interfaces (e.g., screw connection points) are arranged as far out transversely as possible at the same axial position as the coupling parts (in particular, elongated holes or slots).

[0033] Damping elements or similar mounting devices may also be provided at the respective mounting interface, or arranged in cavities or receiving areas provided for this purpose, e.g. on the underside of the foot.

[0034] The aforementioned problem is also solved by an elevator system with a belt drive unit according to the present disclosure, wherein the elevator system has a machine bed, in particular in an arrangement on top of a plurality of guide rails, wherein at least two housing parts of the housing of the belt drive unit are supported against each other by means of the base of the belt drive unit and are connected to or mounted on the machine bed. This results in the aforementioned advantages, in particular with regard to the comparatively simple / uncomplicated mounting of the belt drive unit on the machine bed. Optionally, the base can also have a plurality of fastening means in a plurality of different fastening points / positions, in particular such that the base also fulfills an adapter function with regard to different length and / or width dimensions of different machine beds or different housings.

[0035] The aforementioned problem is also solved by a method according to the corresponding dependent method claim, namely by a method for assembling and mounting a belt drive unit of an elevator system, in particular a belt drive unit according to the present disclosure, comprising the steps of: positive / force-locking coupling of at least two housing parts with a foot of the belt drive unit and thereby supporting the housing parts against each other; assembly of further components in / onto the housing defined by the housing parts and the foot, in particular bearings and shaft into the housing as well as motor and brake unit each at the end face of the housing; mounting the belt drive unit on a machine bed of the elevator system by connecting the foot to the machine bed.This results in the aforementioned advantages, particularly with regard to high variability in terms of design on the one hand and the simplest possible and at the same time robust / load-bearing connection between housing and machine bed on the other hand, especially with variable length dimensions, especially with variable drive zone length (or width).

[0036] It is understandable that, in the context of manufacturing the belt drive unit, the base is advantageously connected to the housing parts as early as possible, particularly to align the housing parts relative to each other as intended, to facilitate further assembly steps, and to minimize potential positional tolerances / deviations, e.g., in connection with the strut attachment. The base can significantly contribute to rigidity and thus also enable final post-processing steps on the housing, e.g., in the area of ​​inner surfaces for receiving bearings, i.e., in the axial area of ​​the respective target position of the bearings. This allows for high dimensional accuracy while minimizing post-processing effort.

[0037] According to one embodiment, at least one strut is installed between the housing parts for mutual support, particularly in an upper circumferential region. This promotes good support and positioning of the housing parts relative to each other and can also maximize the accuracy achievable in connection with any desired post-processing steps (minimal positional tolerances possible).

[0038] According to one embodiment, two housing parts are coupled at least positively via the base, with each housing part being coupled at an axial distance corresponding to the axial distance between bearings mounted in the housing and the other housing part. This also facilitates support of the housing parts over a comparatively large width.

[0039] According to one embodiment, the foot is connected to the machine bed at at least two axial positions, namely a first and a second axial position, with these axial positions being spaced apart from each other by a distance corresponding to / corresponding to the axial spacing of bearings mounted in the housing (or at least approximately). This can further optimize the force flow and promote a slender design with comparatively little material. If the distance should not / cannot be exactly identical in magnitude (e.g., due to design features of the respective machine bed), it is advantageous to maintain a maximum deviation of 5%.

[0040] The aforementioned task is also accomplished by a belt drive unit in its intended, operational configuration on the machine bed of an elevator system, manufactured by positive-locking coupling of at least two housing parts and the base of the belt drive unit, thereby supporting the housing parts against each other, and by positive-locking connection of the base and the machine bed. Based on the aforementioned advantages, this also enables advantageous integration of the belt drive unit into the elevator system, and in particular a streamlined assembly process.

[0041] The aforementioned problem is also solved by using a multi-part housing in combination with a foot for supporting and mounting a belt drive unit on a machine bed of an elevator system, in particular a belt drive unit according to the present disclosure, wherein a first housing part of the housing is positively / force-fitted to a first coupling part of the foot and a second housing part of the housing is positively / force-fitted to a second coupling part of the foot, wherein the belt drive unit is mounted by connecting the foot to the machine bed, advantageously also positively / force-fitted. This allows the aforementioned advantages to be realized, particularly with regard to a good synergistic compromise concerning the requirements mentioned herein.

[0042] Summary: When designing, dimensioning, and constructing belt drive units for elevator systems, application-specific adaptations may be necessary, particularly depending on the length of the belt drive unit's shaft. A belt drive unit for elevator systems is provided, comprising a shaft, bearings for the shaft, and a housing that at least partially surrounds the shaft and supports the bearings. The housing has a first housing part and a second housing part, which are supported against each other by means of struts. According to the invention, the belt drive unit has a foot designed for mounting the belt drive unit to a machine bed of the elevator system. This foot is designed to engage positively with both the first and second housing parts.This also facilitates length adjustment and ensures a favorable force flow path. The invention also relates to a method for assembling and mounting such a belt drive unit. Brief description of the drawings

[0043] The invention is described in more detail in the following drawing figures, whereby reference is made to the other drawing figures for reference numerals that are not explicitly described in a particular drawing figure.

[0044] They show: Fig. 1 in a side view in schematic representation a belt drive unit according to an embodiment, wherein the foot is shown in an arrangement on the base of the housing; Fig. 2 in a top view a one-piece foot of a belt drive unit according to exemplary embodiments; Fig. 3 in a side view in schematic representation of an elevator system with a belt drive unit according to exemplary embodiments; Fig. 4 in schematic representation steps of a method for assembling and mounting a belt drive unit according to exemplary embodiments. Detailed description of the drawings

[0045] The invention will first be explained with general reference to all reference numerals and figures. Specific features or individual aspects of the present invention will be discussed in connection with the respective figure.

[0046] A belt drive unit 10 of an elevator system 1 is provided for mounting on a machine bed 1.1 of the elevator system, wherein the belt drive unit 10 interacts with at least one belt 3 (usually with two or three belts), and wherein the belt drive unit 10 comprises, for example, a motor 4, a shaft 5 with a drive zone 5.1, and a brake unit 6. The shaft is mounted in a multi-part housing 11 of the belt drive unit 10, wherein the housing in particular comprises a first housing part 11.1 and a second housing part 11.2, wherein the housing parts are optionally supported against each other by means of at least one strut 11.3. The shaft is advantageously mounted at two axial positions, wherein corresponding bearings 12, 12a, 12b are supported in the housing or enclosed by the respective housing part, in particular individually in each of the housing parts 11.1, 11.2.The shaft and the corresponding housing part can have their outer surfaces designed as bearing seats / surfaces (axial sections for receiving the respective bearing), for example, by ensuring a predefined surface finish. This can optionally be achieved in the housing (part) by material removal. On the motor and brake unit sides, the shaft can, for example, each have a positive-locking section (e.g., a toothed section) for a rotationally fixed coupling. At least one elevator car 7 can be moved in an elevator shaft 9 by means of the belt drive unit 10.

[0047] On the first housing part 11.1, a first end-face flange 11d or similar end-face mounting means, in particular for the motor, may be provided, and / or on the second housing part 11.2, a second end-face flange 11e or similar end-face mounting means, in particular for the brake unit, may be provided.

[0048] In the lower region 11a of the respective housing part 11.1, 11.2, at least one positive-locking / friction-locking coupling element 11b is arranged, in particular overlapping the lowest circumferential position (and, for example, extending over a circumferential angle of, say, 20°), for example, in the form of a radially projecting spring, i.e., a male coupling element. A separate foot 15, in particular in the form of a base plate, preferably detachable, is equipped with positive-locking / friction-locking coupling elements 15b, in particular in the form of an elongated hole. According to one of the exemplary embodiments, the corresponding coupling elements 11b, 15b are designed at least substantially as positive-locking, or optionally as purely positive-locking, but are nevertheless generally described here as "positive-locking / friction-locking" because frictional locking as a supplementary operating principle can also be implemented, in particular in combination with other coupling means.The corresponding coupling parts 11b, 15b each form a positive / force-locking connection 13, in particular in the form of a tongue-and-groove connection or slot connection, which are advantageously arranged in an axial section corresponding to the bearing seats.

[0049] The foot 15 is advantageously designed as an integral, one-piece solid component. Functionally, the foot 15 can be divided into three sections, particularly with an H-shaped outline: a first axial section 15.1 for the first housing part, a second axial section 15.2 for the second housing part, and an intermediate axial section 15.3 (optionally one-piece or separate / multi-part) for the structural connection of the first and second axial sections. Mounting interfaces 15c are provided at least on the first and second axial sections, particularly in the configuration of or designed for screw connections, so that the foot can be connected to the machine bed, especially in the axial area of ​​the coupling parts 15b, particularly by means of fastening elements 14, for example, in the configuration of screws.

[0050] The invention will now be explained in more detail with reference to exemplary embodiments.

[0051] In Fig. Figure 1 illustrates a belt drive unit 10 with a shaft 5 having several drive zone sections 5.1 for multiple belts, wherein an at least substantially positive-locking coupling 13 is realized between the respective housing part base 11a and the foot 15, here designed as a base plate. The respective coupling 13 is provided in the axial area of ​​the bearings 12a, 12b.

[0052] In Fig. 2 an advantageous H-shaped outline contour U15 of the foot 15 is recognizable; the respective coupling area 15b and the respective mounting interface 15c are arranged at least approximately at the same axial position x15.

[0053] In the Fig. 1 and Fig. 2. The following reference symbols are also explained: circumferential position Pu of the respective strut, H-shaped outline contour U15 of the foot 15, first and second axial section x1, x2 of the shaft, axial section / position x12 corresponding to the corresponding bearing (seat), axial section / position x15 of coupling part 15b and preferably also of the respective assembly interface 15c, axial distance Δx of the bearing (seats) relative to each other, as well as the radial direction (r) and the longitudinal direction (x) corresponding to the main extension direction of the shaft 5.

[0054] In Fig. Figure 3 shows components of an elevator system 1 comprising at least one belt drive unit 10; by means of the belt drive unit 10 and interacting belts 3, at least one elevator car 7 is moved or driven and / or braked.

[0055] In Fig.The following four steps of a procedure for assembling and mounting a belt drive unit of an elevator system described here are indicated: a first step S1: positive / force-locking coupling of housing part(s) and base, possibly also attachment of struts of the housing, possibly reworking of the housing; a second step S2: assembly of further components into the housing; and a third step S3: mounting of the entire assembly (housing together with the drive and / or brake unit attached to it) or at least of the housing on the machine bed. Reference symbol list 1 elevator system 1.1 Machine bed for receiving / supporting one / the belt drive unit 3 straps 4 Motor, drive 5 wave 5.1 Drift zone 6 Brake unit 7 elevator cabins 9 elevator shaft 10 Belt drive unit 11 cases 11.1 first housing part 11.2 second / second housing part 11.3 Strut 11a lower part of the housing 11b Form-fit / force-fit coupling part in the lower housing area 11d first end-face flange or similar end-face mounting device 11e second end-face flange or similar end-face mounting device 12 warehouses 12a first camp 12b second camp 13. Form-fit / force-fit connection 14 Fasteners for mounting on / to the machine bed 15 feet, particularly in the form of a base plate, preferably demountable 15.1 Axial section for first housing part 15.2 Axial section for second housing part 15.3 Intermediate axial section, optionally one-piece or separate / multi-piece 15b Form-fit / force-fit coupling part, in particular in the form of an elongated hole 15c Mounting interface, in particular in the form of a screw connection PU circumferential position S1 first step: form-fit / force-fit coupling of housing part(s) and foot S2 second step: Assembling further components into the housing S3 third step: Assembly of the belt drive unit U15 H-shaped outline of the foot r radial direction x1 first axial section of the shaft x2 second axial section of the shaft x12 Axial section / position corresponding to the corresponding bearing (seat) x15 Axial section / position of coupling part and mounting interface Δx Axial distance between the bearing (seats) x Longitudinal direction (main direction of extension of the shaft) QUOTES INCLUDED IN THE DESCRIPTION

[0000] 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

[0000] US 10,207,899 B2

[0004]

Claims

[1] Belt drive unit (10) for elevator systems (1), with a shaft (5) and with bearings (12) for the shaft (5) and with a housing (11) which surrounds the shaft (5) at least in sections and supports the bearings (12), wherein the housing (11) has a first housing part (11.1) for a first axial section (x1) of the shaft and a second housing part (11.2) for a second axial section (x2) of the shaft, wherein the housing parts (11.1, 11.2) can be supported against one another by means of at least one strut (11.3) or the like, at least substantially axially aligned housing or stiffening components; characterized by that the belt drive unit (10) has a foot (15) designed for mounting the belt drive unit on a machine bed (1.1) of the elevator system (1), which foot is designed to interact in a form-fitting / non-positive manner with both the first and the second housing part (11.1, 11.2). [2] Belt drive unit according to claim 1, wherein the foot (15) is designed integrally in one piece, advantageously as a base plate; and / or wherein the foot is reversibly coupleable to the housing, in particular for the purpose of disassembly; and / or wherein the foot is modularly provided separately from the housing and connectable to the housing. [3] Belt drive unit according to one of the preceding claims, wherein the first housing part (11.1) is provided / arranged for a first of the bearings (12a) and the second housing part (11.2) is provided / arranged for a second of the bearings (12b), wherein the respective housing part has in a lower region (11a) a positive / non-positive coupling part (11b) which couples with a / the corresponding positive / non-positive coupling part (15b) of the foot (15). [4] Belt drive unit according to one of the preceding claims, wherein the foot (15) is one-piece, in particular formed from flat material; or wherein the foot is multi-piece, wherein a first foot part and a second foot part are supported against each other by an intermediate axial section (15.3); and / or wherein the foot is formed from flat material, and the housing parts are designed as cast parts. [5] Belt drive unit according to one of the preceding claims, wherein the first and second housing parts are supported against each other at at least one circumferential position (Pu) by at least one strut (11.3), in particular at least at an upper / topmost circumferential position. [6] Belt drive unit according to one of the preceding claims, wherein a first flange (11d) or similar mounting means for a motor (4) of the belt drive unit is provided on the front side of the first housing part and / or wherein a second flange (11e) or similar mounting means for a brake unit (6) of the belt drive unit is provided on the front side of the second housing part, or vice versa. [7] Belt drive unit according to one of the preceding claims, wherein positive / non-positive coupling parts (11b, 15b) of the housing parts and the foot form at least one connection from the following group: screw connection, slotted connection, tongue and groove connection, bolt connection. [8] Belt drive unit according to one of the preceding claims, wherein the foot (15) has fastening means (14) for fastening the belt drive unit to / on a / the machine bed (1.1) of the elevator installation, in particular in the form of screw connections. [9] Belt drive unit according to one of the preceding claims, wherein a / the positive / non-positive coupling part (11b) of the respective housing part is arranged in an axial section (x12) corresponding to the corresponding bearing seat, in particular at least approximately in exactly the same axial position; and / or wherein the axial distance of the bearings from one another corresponds at least approximately to the axial distance of the positive / non-positive coupling parts of the housing and / or the foot. [10] Belt drive unit according to one of the preceding claims, wherein an axial position of the corresponding bearing / bearing seat corresponds to an axial position of a corresponding coupling part and a corresponding mounting interface on the base. [11] Elevator installation (1) with a belt drive unit (10) according to one of the preceding claims, wherein the elevator installation has a machine bed (1.1), in particular in an arrangement on top of a plurality of guide rails, wherein at least two housing parts of the housing (11) of the belt drive unit are supported against each other by means of the foot (15) of the belt drive unit and are connected to the machine bed (1.1), in particular are mounted on the machine bed. [12] Method for assembling and mounting a belt drive unit (10) of an elevator installation (1), in particular a belt drive unit according to one of claims 1 to 10, comprising the steps of: positively / non-positively coupling at least two housing parts (11.1, 11.2) to a base (15) of the belt drive unit and thereby supporting the housing parts against one another; assembling further components in / onto the housing (11) defined by the housing parts and the base, in particular bearings (12) and shaft (5) in the housing, as well as motor (4) and brake unit (6), each on the end face of the housing; mounting the belt drive unit (10) on a machine bed (1.1) of the elevator installation by connecting the base to the machine bed. [13] Method according to the preceding method claim, wherein at least one strut is installed between the housing parts for mutually supporting the housing parts; and / or wherein two housing parts are coupled to the foot at least in a form-fitting manner, wherein the respective housing part is coupled to the other housing part at an axial distance corresponding to an axial distance of bearings mounted in the housing; and / or wherein the foot is connected to the machine bed at at least two axial positions, namely at a first and second axial position, wherein these axial positions are spaced from one another at a distance corresponding to / the axial distance of bearings mounted in the housing. [14] Belt drive unit (10) in a proper, operational arrangement on a machine bed (1.1) of a lift installation (1), produced by positive / non-positive coupling of at least two housing parts (11.1, 11.2) and base (15) of the belt drive unit (10) and thereby supporting the housing parts against each other on the one hand and by positive / non-positive connection of base (15) and machine bed (1.1) on the other hand. [15] Use of a multi-part housing (11) in combination with a foot (15) for supporting and mounting a belt drive unit (10) on a machine bed (1.1) of an elevator installation (1), in particular a belt drive unit according to one of claims 1 to 10, wherein a first housing part (11.1) of the housing is positively / non-positively coupled to a first coupling part (15b) of the foot and a second housing part (11.2) of the housing is positively / non-positively coupled to a second coupling part (15b) of the foot, wherein the belt drive unit (10) is mounted by connecting the foot (15) to the machine bed (1.1).

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