Belt drive unit for lift systems, lift system, method and use

Abstract

When planning, designing and constructing belt drive units for lift systems, an application-specific adaptation may be necessary, in particular depending on the length of the shaft of the belt drive unit. A belt drive unit for lift systems is provided, having a shaft and having bearings for the shaft and having a housing which surrounds the shaft at least in some sections and supports the bearings, wherein the housing has a first housing part and a second housing part, which housing parts are supported against one another by means of struts. According to the invention, the belt drive unit has a foot which is designed for mounting the belt drive unit on a machine bed of the lift system and which is designed to interact with both the first and the second housing part in a form-fitting / force-fitting manner. This not least also facilitates length adaptation and ensures an advantageous force flow path. The invention also relates to a method for assembling and mounting such a belt drive unit.

Description

[0001] Belt drive unit for elevator systems, elevator system and method and use

[0002] Technical area

[0003] The present invention relates to a belt drive unit for elevator systems, comprising a shaft and bearings for the shaft, and comprising a housing which at least partially surrounds the shaft and supports the bearings, wherein the housing has a first housing part and a second housing part, which housing parts are supported against one another by means of at least one strut. Furthermore, the present invention relates to a method for assembling and mounting such a belt drive unit, in particular in combination with optional post-processing steps on the housing, in particular before installation of bearings and shaft. Last but not least, 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.

[0004] Technical background

[0005] Belt drives for elevator systems typically have high demands on rigidity and robustness, particularly since the belt(s) interacting with a drive shaft of the belt drive are used with comparatively high forces and high speeds and over a comparatively long (free) belt length. Accordingly, very clean and highly resilient shaft bearings are of great importance, as well as, on the one hand, good support of the shaft bearings within a / the housing of the respective belt drive and, on the other hand, advantageous power transmission into a machine bed of the elevator system. For many design tasks, this leads to a very rigid housing being achieved through a very application-specific design, which, however, is not very variable with regard to adaptations or transferability to other applications, e.g.if the number of belts is to be changed, which is therefore also comparatively cost-intensive.

[0006] According to the state of the art, the housing is designed as a cast part that is as comprehensive as possible, particularly with regard to high rigidity. However, this entails disadvantages such as comparatively high post-processing costs, specific assembly steps, and limited variability. Based on this, there is interest in an improved design concept for housings of belt drives for elevator systems.

[0007] An example is publication US 10,207,899 B2, which describes a belt drive housing that can be scaled in size in a comparatively simple manner.

[0008] Based on the state of the art, there is still a need for particularly advantageous designs of belt drives, particularly with regard to installation on a machine bed of an elevator system, in particular 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.

[0009] Description - Technical solution

[0010] The object is to provide a belt drive unit for elevator systems in which, on the one hand, a housing that is scalable in size in particular can be provided and, on the other hand, a particularly advantageous manner of support and power transmission to a machine bed can be ensured. It is also the object to design such a belt drive unit in such a way that assembly or connection of the belt drive unit on the machine bed can be implemented in an advantageous manner, not least with regard to maintenance and / or dismantling. This object is achieved by a belt drive unit according to claim 1 and by a method according to the independent method claim and by uses according to the independent use claim. Advantageous developments of the invention are explained in the respective subclaims.The features of the embodiments described below can be combined with one another unless this is explicitly denied.

[0011] 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 in sections 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 / are supported against one another by means of at least one strut or the like, at least substantially axially aligned housing or stiffening components;

[0012] 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 foot is designed to interact with both the first and the second housing part in a form-fitting / non-positive manner. The housing and the foot are provided with corresponding non-positive / positive coupling sections. This also facilitates the individualization of a connection of the housing to the machine bed that is particularly advantageous for the respective application, and thus also a comparatively flexible / variable structural design with regard to optimal force flow (path). By means of the foot, which can be provided separately from the housing parts, a length adjustment can also be achieved in an advantageously simple manner, e.g. with regard to a variable number of belts or drive zone sections, e.g.regarding the design of the same belt drive unit for either two or three belts. In addition to providing the most flexible connection to the machine bed, the base can also largely fulfill a stabilizing and stiffening structural function. Last but not least, this also facilitates the design of the housing components as cast parts.

[0013] For example, the belt drive unit has a one- or two-part base with two corresponding positive / non-positive coupling parts, wherein the base provides a mounting interface for fastening the belt drive unit in an elevator system.

[0014] The term “positive / positive locking” or “positive / positive locking” is to be understood here as a connection or coupling which is at least positively locking (advantageously essentially positively locking) and optionally also partially non-positively locking. For example, the positive / positive locking connection is an essentially positive-locking connection (e.g., interlocking in the sense of a tongue and groove), in which a type of securing of the connection can also be provided by individual welding points (the latter, however, can easily be opened / broken again, e.g., during dismantling of the belt drive unit). According to the present invention, however, material bonding remains a purely optional supplementary possibility; especially with cast iron, welding is not usual or not possible; if the joining partners are made of steel, for example, additional welding can be provided as a supplementary option.

[0015] According to the present disclosure, a "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, i.e., it also acts as a type of strut that can be installed between the housing parts (namely, at a / the lowest circumferential position), the foot does not merely represent a mounting adapter, but rather ensures the desired structural cohesion of the housing parts in the area of ​​their ("inherently") separate bases. Accordingly, the foot is also to be viewed as a component of at least the belt drive unit (i.e., not of the machine bed), and in a broader sense, even as a housing component.

[0016] It should be understood that the housing parts can already be supported against each other, at least to a large extent, by at least one strut, and can thereby also ensure a certain or sufficient rigidity in combination with the positive / non-positive connection to the base; in this respect, the base can also be designed in several parts, with the individual parts of the base optionally being connected to one another. 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, particularly serving to stiffen the housing, in particular to improve the mutual support of the housing parts.For example, the base is a single piece, and the at least one strut is provided only in one / the upper circumferential half of the housing (circumferential position in the range from 9 o'clock to 3 o'clock), at least not in the circumferential area from 4 o'clock to 8 o'clock. In this respect, a distinction must be made between the different stiffnesses of the assembled housing (including the base) and the housing of the belt drive unit mounted on the machine bed.

[0017] For example, a total of four components are provided, namely two housing bearing support units (or first and second housing parts, can be identical in construction), the foot and a strut.

[0018] The inventive concept of providing the housing parts in a bearing-specific or bearing-point-specific manner and connecting them to a machine bed via a form-fitting / force-locking coupling base also provides advantages in the following respects:

[0019] -Modular parts can be used for different machine sizes without any noticeable adjustment effort;

[0020] -Manufacturing costs, particularly in connection with the casting of comparatively large housings (usually not a process that can be automated), can be significantly avoided, especially with regard to smaller components and higher quantities, in particular since the absolute number of identical housing castings required for bearing positions can be increased;

[0021] The form-fitting / non-positive interaction between housing parts and base described here can also facilitate disassembly or imply the option of disassembly, whereby the following advantages can be ensured to a particularly extensive extent: -Modularity with regard to various machines and the associated housing sizes; -Starting from a defined width of a motor, the distance between the bearing points can be easily adjusted without any noticeable design changes being necessary; -Comparatively small housing part size, which enables / facilitates production on a potting system (in contrast, the production of a complete housing would no longer be possible due to the box size being too large);

[0022] -advantageous material combination: housing parts or bearings made of cast iron, base made of sheet metal or flat material or a comparable plate;

[0023] Advantageously, the coupling between the base and the housing parts is initially designed as a positive fit for power transmission, with a positive or non-positive connection for positional stability. In other words, in addition to the positive fit, a non-positive connection can be provided, particularly for maintaining the respective target position.

[0024] According to one embodiment, the base is designed as an integral piece, advantageously as a base plate. This facilitates, not least, the length adjustment of the mounting interface with regard to application-specific shaft dimensions.

[0025] According to one embodiment, the base can be reversibly coupled to the housing, particularly for disassembly purposes. This can also further increase the flexibility / variability and accessibility within the overall context of the entire elevator system.

[0026] According to one embodiment, the base can be provided (or designed) separately from the housing in a modular manner and connected to the housing. This can also ensure a high degree of variability, while maintaining a comparatively slim / cost-effective design.

[0027] Value chain .

[0028] According to one embodiment, the first housing part is provided / configured for a first of the bearings and the second housing part for a second of the bearings, wherein the respective housing part has a positive / non-positive coupling part in a lower region (base), which couples with a / the corresponding positive / non-positive coupling part of the foot. This also promotes support and force absorption in the region of particularly stable housing sections, in particular in the region of cast parts or cast housing shells. Advantageously, a male part of the at least positive coupling is / is provided by means of the corresponding housing part, and the corresponding female part of the at least positive coupling is / is provided by means of the foot.

[0029] The force / form-locking interaction or the corresponding coupling can comprise, for example, a slot connection (in particular with slots or tongue and groove arrangement aligned orthogonally to the longitudinal axis of the shaft), a screw connection, a plug-in connection (in particular by means of bolts) or similar form-locking contours.

[0030] 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 foot is initially designed that is separate from the housing, and the housing and foot are provided with corresponding non-positive / positive coupling sections, wherein the creation of the housing that can be connected to the machine bed as intended can be realized by non-positive / positive coupling with the non-positive / positively designed base of the respective housing part, whereby on the one hand a high level of strength / rigidity and on the other hand also a high level of dimensional accuracy can be achieved, in particular since the application of heat, such as by welding, in the base area of ​​the respective housing is not necessarily required (although individual welding points can / could be provided optionally to increase the load-bearing capacity of the connection between the housing base and the foot).The assembled housing, equipped with a base, can also be subjected to post-processing before additional components of the belt drive unit (e.g., bearings, motor, brake unit, shaft) are installed, so that the entire assembly can then be mounted on the machine bed. With such a design, a length adjustment, e.g., due to a wider / longer drive zone of the shaft, can be implemented relatively easily. In particular, the base (single-piece or multi-piece) and individual struts supporting the housing components against each other can be provided in variable lengths or application-specifically, and the (first and second) housing components can each be provided as standard components or identical components.This also allows for the creation of an advantageous force flow path for each type of torque between the housing part 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 (particularly material- and cost-efficient). Last but not least, the type of mounting interface to the machine bed can be specified largely independently of the housing parts, and the housing parts can be provided unchanged as identical parts. This means that, thanks to high production volumes, even a cast part can be provided comparatively cost-effectively. In this respect, the base can also be referred to as an assembly interface module, advantageously with a purely force-locking / positive-locking connection to the (respective) housing part base.This makes the construction / design largely independent of a specific machine bed configuration, in particular also independent of the type and manner of application-specific attachment to the machine bed. The foot can be provided in a comparatively cost-effective, application-specific manner even if the foot is designed as a single piece, e.g., starting from flat material. Optionally, the foot can be multi-part (in particular, consist of several flat material sections), in particular with a separate intermediate axial section (in the sense of a length compensation part, comparable to the concept of at least one strut between the housing parts), or the foot can be integral. Based on the present disclosure, a person skilled in the art can specify an application-specific, advantageous structural design of the foot.

[0031] According to one embodiment, the base is made of a single piece, particularly from flat material. This also provides a particularly robust design. For example, the single- or multi-piece base has an H-shaped outer contour (outline) when viewed from above. Flat material as a starting material or semi-finished product also enables application-specific customization at reasonable costs, even for very small quantities or even for one-off production.

[0032] Alternatively, the base is multi-part, with a first base part and a second base part being supported against each other by an intermediate axial section of the base. This can further increase variability, particularly with regard to easier length adjustment. For example, the multi-part base is formed by several flat material sections, in particular by three rectangular flat material sections, in particular by flat material sections joined to one another at a butt joint. According to one embodiment, the base is formed from flat material, and the housing parts are designed as cast parts.This combination of different manufacturing processes and semi-finished products provides, not least, a particularly advantageous compromise with regard to the requirements mentioned here, in particular with regard to flexibility / variability in conjunction with reasonable costs on the one hand and with regard to rigidity and advantageous force flow path and load capacity on the other.

[0033] 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 a first circumferential position (preferably at 12 o'clock). This also 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 a front-end coupling with a drive or brake unit and can otherwise be designed largely identically (in particular 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 inlet / outlet circumferential position of the at least one belt.

[0034] According to one exemplary embodiment, a flange or similar mounting means for a motor of the belt drive unit is provided on the front side 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 front side of the second housing part, or vice versa, in particular in such a way that a drive torque applied via the axial shaft section between the motor and the drive zone can be transmitted at least in large part via the first housing part and the foot into a / the machine bed, and a braking torque applied via the axial shaft section between the brake unit and the drive zone can be transmitted at least in large part via the second housing part and the foot into a / the machine bed. In combination with a machine bed connection of the respective housing part in the axial section of the corresponding bearing, this also enables a very advantageous flow of force.According to one embodiment, positive / non-positive coupling parts 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 provides the advantage of application-specific adaptation / adaptation of the optimal type of connection in each case. Optionally, this positive / non-positive connection can be supplemented by at least one weld point, so that an at least positive or essentially positive / non-positive connection is created for the respective force flow, which can be supplemented, for example, by individual weld points for additional security. Based on the present disclosure, a person skilled in the art can determine whether additional material bonding might be expedient.

[0035] According to one embodiment, the base comprises fastening means for attaching the belt drive unit to / on a machine bed of the elevator system, particularly in the form of screw connections. This allows the connection to the machine bed to be customized in a comparatively simple manner. The fastening means comprise, for example, point-like and / or slot-like fastening holes / bores. The fastening means are advantageously arranged in the axial region of the corresponding bearing.

[0036] According to one embodiment, a / the positive / non-positive coupling part of the respective housing part is arranged in an axial section corresponding to the corresponding 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.

[0037] According to one embodiment, the axial distance between the bearings (seats) corresponds at least approximately to the axial distance between the force-locking / positive-locking coupling parts of the housing and / or the base, in particular with a deviation of a maximum of 10%, preferably a maximum of 5%. This also promotes an advantageous design with regard to force input and force transmission. According to one embodiment, an axial position of the corresponding bearing / bearing seat corresponds to an axial position of a corresponding coupling part (on the corresponding housing part and on the base) and a corresponding mounting interface on the base. This also promotes an advantageous force flow (path). The mounting interfaces (e.g., screw connection points) are advantageously arranged as far transversely as possible at the same axial position as the coupling parts (in particular, elongated holes or slots).

[0038] Damping elements or similar mounting means can also be provided at the respective mounting interface or can be arranged in cavities or receiving areas provided for this purpose, for example on the underside of the foot.

[0039] The aforementioned object is also achieved by an elevator system with a belt drive unit according to the present disclosure, wherein the elevator system has a machine bed, in particular arranged 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 the machine bed or mounted on the machine bed. This results in the aforementioned advantages, in particular with regard to comparatively simple / uncomplicated installation 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 respect to different length and / or width dimensions of different machine beds or different housings.

[0040] The aforementioned object is also achieved by a method according to the corresponding independent method claim, namely by a method for assembling and mounting a belt drive unit of an elevator installation, in particular a belt drive unit according to the present disclosure, comprising the steps of: positive / non-positive coupling of at least two housing parts with a base of the belt drive unit at corresponding non-positive / positive coupling sections and thereby supporting the housing parts against one another; assembly of further components in / onto the housing defined by the housing parts and the base, in particular bearings and shaft in 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 installation by connecting the base to the machine bed.This results in the advantages mentioned above, in particular with regard to high variability in terms of design on the one hand and the simplest and at the same time robust / load-bearing connection between the housing and the machine bed on the other hand, especially with variable lengths, especially with variable drive zone length (or width).

[0041] It should be understood that the foot is advantageously connected to the housing parts as early as possible in the creation of the belt drive unit, in particular to align the housing parts relative to one another as intended, to facilitate further assembly steps, and to keep potential positional tolerances / deviations, e.g., in connection with the strut attachment, as small as possible. The foot can contribute significantly to rigidity and thus also enable final post-processing steps on the housing, e.g., in the area of ​​inner circumferential surfaces for accommodating bearings, i.e., in the axial area of ​​a respective target position of the bearings. This makes it possible, not least, to achieve a high level of (dimensional) accuracy while keeping post-processing effort as low as possible.

[0042] According to one embodiment, at least one strut is installed between the housing parts to support the housing parts against each other, particularly in an upper circumferential area. This promotes good support and positioning of the housing parts relative to each other and can also maximize the achievable accuracy in connection with any desired post-processing steps (minimal positional tolerances as possible).

[0043] According to one embodiment, two housing parts are coupled to the base 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. This also promotes support of the housing parts over a comparatively large width. According to one embodiment, the base is connected to the machine bed at least two axial positions, namely at a first and second axial position, wherein these axial positions are spaced from each other at a distance corresponding to an axial distance of bearings mounted in the housing (at least approximately). This can also further optimize the force flow and promote the slimmest possible design with comparatively low material usage. If the distance should / cannot be exactly identical in amount (e.g.due to design features of the corresponding machine bed), it is advantageous to maintain a deviation of a maximum of 5%.

[0044] The aforementioned object is also achieved by a belt drive unit in a proper, operational arrangement on a machine bed of an elevator system, wherein the belt drive unit is manufactured by positively / non-positively coupling at least two housing parts and a base of the belt drive unit at corresponding non-positively / positively locking coupling sections, thereby supporting the housing parts against each other on the one hand, and by positively / non-positively connecting the base and machine bed on the other. Based on the aforementioned advantages, this also enables advantageous integration of the belt drive unit into the elevator system, in particular a streamlined assembly process.

[0045] The aforementioned object is also achieved by using a multi-part housing in combination with a base 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 corresponding non-positive / positive coupling sections are coupled by coupling a first housing part of the housing in a positive / positive manner to a first coupling part of the base and a second housing part of the housing in a positive / positive manner to a second coupling part of the base, wherein the belt drive unit is mounted by connecting the base to the machine bed, advantageously also in a positive / positive manner. This allows the aforementioned advantages to be realized, in particular with regard to a good synergistic compromise with regard to the requirements mentioned here.Summary: When designing, constructing, and constructing belt drive units for elevator systems, application-specific adaptation may be necessary, particularly depending on the length of the shaft of the belt drive unit. 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 in sections and supports the bearings, wherein the housing has a first housing part and a second housing part, which housing parts are supported against one another by means of struts. According to the invention, the belt drive unit has a base configured for mounting the belt drive unit to a machine bed of the elevator system, which base is configured to interact with both the first and the second housing part in a form-fitting / non-positive manner.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.

[0046] Short description of the drawings

[0047] The invention is described in more detail in the following drawing figures, wherein reference is made to the other drawing figures for reference symbols that are not explicitly described in a respective drawing figure.

[0048] They show:

[0049] Figure 1 is a side view in schematic representation of a belt drive unit according to an embodiment, wherein the foot is shown in an arrangement on the base of the housing;

[0050] Figure 2 shows a plan view of a one-piece base of a belt drive unit according to embodiments;

[0051] Figure 3 shows a side view in schematic representation of an elevator system with a belt drive unit according to embodiments;

[0052] Figure 4 shows a schematic representation of steps of a method for assembling and mounting a belt drive unit according to exemplary embodiments. Detailed description of the drawings

[0053] The invention will first be explained with general reference to all reference numerals and figures. Special features or individual aspects of the present invention will be discussed in connection with the respective figure.

[0054] A belt drive unit 10 of an elevator installation 1 is provided for mounting on a machine bed 1.1 of the elevator installation, wherein the belt drive unit 10 interacts as intended with at least one belt 3 (usually with two or three belts), wherein the belt drive unit 10 has, 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 has in particular a first housing part 11.1 and a second housing part 11.2, wherein the housing parts are optionally supported against one another 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 are enclosed by the respective housing part, in particular individually in one of the housing parts 11.1, 11.2.For this purpose, the outer surfaces of the shaft and the corresponding housing part can be designed as bearing seats / surfaces (axial sections for accommodating the respective bearing), e.g., by ensuring a predefined surface finish. This can optionally also be achieved in the housing (part) by material-removing post-processing. 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 displaced in an elevator shaft 9 by means of the belt drive unit 10.

[0055] On the first housing part 11.1, a first end-face flange 11d or similar end-face mounting means can be provided, in particular for the motor, and / or on the second housing part 11.2, a second end-face flange 11e or similar end-face mounting means can be provided, in particular for the brake unit.

[0056] In the lower region 11a of the respective housing part 11.1, 11.2, at least one non-positive / positive coupling section, in particular a positive / positive coupling part 11b, is arranged, in particular overlapping the lowest circumferential position (and, for example, extending over a circumferential angle of, for example, 20°), for example in the form of a radially projecting spring, i.e., a male coupling part. A separate foot 15, in particular configured as a base plate, preferably removable, is equipped with non-positive / positive coupling sections, in particular positive / positive coupling parts 15b, in particular configured as an elongated hole.According to one of the exemplary embodiments, the corresponding coupling parts 11b, 15b are at least substantially positively connected, optionally purely positively connected, but are nevertheless generally described here as "positive / non-positively connected," since non-positive connection can also be implemented as a supplementary operating principle, particularly in combination with other coupling means. The corresponding coupling parts 11b, 15b each form a positive / non-positive connection 13, particularly in the form of a tongue-and-groove connection or a slotted connection, which are advantageously each arranged in an axial section corresponding to the bearing seats.

[0057] The foot 15 is advantageously designed as a solid, integral one-piece structure. Functionally, the foot 15 can be divided into three sections, particularly with an H-shaped outline: first axial section 15.1 for the first housing part, second axial section 15.2 for the second housing part, and intermediate axial section 15.3 (optionally in 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 configured as or adapted for screw connections, so that the foot can be connected to the machine bed, particularly in the axial region of the coupling parts 15b, particularly by means of fastening means 14, for example configured as screws.

[0058] In the following, the invention is explained in more detail with reference to embodiments.

[0059] In Fig. 1, a belt drive unit 10 with a shaft 5 with several

[0060] Driving zone sections 5.1 for several belts, wherein at least one in

[0061] Essentially, a 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.

[0062] In Fig. 2, an advantageously H-shaped outline contour Ul5 of the foot 15 can be seen; the respective coupling region 15b and the respective mounting interface 15c are arranged at least approximately at the same axial position xl5.

[0063] In Figures 1 and 2, the following reference numerals are also explained:

[0064] Circumferential position Pu of the respective strut, H-shaped outline Ul 5 of the foot 15, first and second axial section xl, x2 of the shaft, axial section / position xl2 corresponding to the corresponding bearing (seat), axial section / position xl5 of coupling part 15b and preferably also of the respective mounting interface 15c, axial distance Ax of the

[0065] Bearings (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.

[0066] Fig. 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 displaced, driven, and / or braked.

[0067] Fig. 4 shows the steps of a method for assembling and installing a belt drive unit of an elevator system described here, namely a first step S1: positive / non-positive coupling of the housing part(s) and base, optionally also attaching struts to the housing, optionally reworking the housing; a second step S2: assembling further components into the housing; and a third step S3: mounting the entire assembly (housing together with the attached drive and / or brake unit) or at least the housing on the machine bed. List of reference symbols

[0068] I Elevator system

[0069] 1.1 Machine bed for receiving / supporting a belt drive unit

[0070] 3 straps

[0071] 4 Engine, drive

[0072] 5 Wave

[0073] 5.1 Drifting zone

[0074] 6 Brake unit

[0075] 7 elevator car

[0076] 9 Elevator shaft

[0077] 10 Belt drive unit

[0078] II Housing

[0079] 11.1 first housing part

[0080] 11.2 second housing part

[0081] 11.3 Strut

[0082] 11a lower part of the housing

[0083] 1 1b force-locking / form-locking coupling section, in particular form-locking / force-locking coupling part in the lower housing area

[0084] 1 Id first end flange or similar end mounting means

[0085] I the second end flange or similar end mounting means

[0086] 12 camps

[0087] 12a first camp

[0088] 12b second camp

[0089] 13 positive / non-positive connection

[0090] 14 Fasteners for mounting on / to machine bed

[0091] 15 feet, especially in the form of a base plate, preferably removable

[0092] 15.1 Axial section for first housing part

[0093] 15.2 Axial section for second housing part

[0094] 15.3 intermediate axial section, optionally in one piece or separate / multi-piece

[0095] 15b force-locking / positive-locking coupling section, in particular form-locking / positive-locking 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

[0096] 51 first step: positive / force-locking coupling of housing part(s) and base

[0097] 52 Second step: Assembly of further components into the housing S3 Third step: Assembly of the belt drive unit

[0098] Ul 5 H-shaped outline of the foot r radial direction xl first axial section of the shaft x2 second axial section of the shaft xl2 axial section / position corresponding to the corresponding bearing (seat) xl 5 axial section / position of coupling part and mounting interface Ax axial distance of the bearings (seats) to each other x longitudinal direction (main extension direction of the shaft)

Claims

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 in that the belt drive unit (10) has a foot (15) designed for mounting the belt drive unit to a machine bed (1.1) of the elevator installation (1), which foot is designed to be connected to both the first and the second housing part (11.1, 11.2) to cooperate in a form-fitting / non-positive manner, wherein the housing (11) and the base (15) are provided with corresponding non-positive / non-positive coupling sections.

2. Belt drive unit according to claim 1, wherein the foot (15) is designed integrally, advantageously as a base plate; and / or wherein the foot is reversibly coupled 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 in one piece, in particular formed from flat material; or wherein the foot is in several parts, wherein a first foot part and a second foot part are connected by an intermediate axial section (15.3) are supported against each other; and / or wherein the base is formed from flat material and the housing parts are designed as castings.

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 a first 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 end face 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 end face 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 (xl2) corresponding to the corresponding bearing seat, in particular at least approximately in exactly the same axial position; and / or wherein the axial distance between the bearings corresponds at least approximately to the axial distance between the positive / non-positive coupling parts of the housing and / or the base.

10. Belt drive unit according to one of the preceding claims, wherein one / the 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 foot.

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. A 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) with a base (15) of the belt drive unit at corresponding non-positively / positively locking coupling sections 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 at 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 base at least positively, 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 base 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 an elevator system (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) to corresponding non-positive / positive coupling sections and thereby supporting the housing parts against one another 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 corresponding non-positive / positive coupling sections are coupled by a first housing part (11.1) of the housing being positively / positively coupled to a first coupling part (15b) of the foot and a second housing part (11.2) of the housing being positively / 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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