EP2460755A1 - Lifting device, in particular lift or pneumatic platform - Google Patents

Abstract

The lifting device comprises a drive unit for partially vertical lifting of a load-carrier. The drive unit has a drive engine (14) and a drive shaft (11) which is provided with a drive element. A traction element (23) is arranged between the drive unit and the load-carrier, where a carrying unit is provided for carrying the drive engine. The drive unit has a reduction unit having the drive element and a driven element (20) which is arranged on a driven shaft (3).

Description

The invention relates to a lifting device, in particular elevator or lifting platform, according to the preamble of claim 1.

State of the art

So far, a wide variety of elevators with a variety of drive systems or support structures, which are generally cantilevered between the floors of a building, common. The lifting truck is a load pickup or elevator pulley or elevator car fixed, the lift truck is moved by means of the drive unit along the adjustment. Often both the truck and the load bearing on the support structure out. For example, appropriate elevators in buildings with about 2 to 10 floors in single or multi-family houses, office buildings or the like u.a. installed as part of the renovation of the building. However, conventional elevators are comparatively expensive, so that they are currently used in particular as so-called "home lifts" little.

Frequently, the drive unit comprises, in addition to the drive motor, a loaded on train rope, chain, belt or the like, to which the lift truck and optionally a counterweight of the lift truck are fixed. In normal operation, the lift truck or the counterweight is also braked by means of the drive unit. Partially, the drive motor for this purpose each one connected to the engine brake (see, eg DE 102 58 344 A1 or EP 0 979 205 B1 ). Also, separate brakes are common (see. EP 1 460 022 A1 ). In some embodiments, two motors for use in individual embodiments, whereby the drive unit is easier to assemble, but is comparatively wide and requires space accordingly (see, eg DE 10 2004 047 431 A1 ).

In addition, drive systems for corresponding lifting devices are already known, which by means of a transmission, in particular a belt drive with reduction, the adjustment of the load or the counterweight allow (see. DE 102 007 018 375 A1 ). This commercially available electric motors can be used for the drive, on the one hand are low and on the other hand realize a comparatively large torque for the method of lifting the load with the help of the transmission or the reduction.

In particular, by means of the latter lifting devices, the economics of corresponding elevators could be improved, but for the economic breakthrough, these systems were not yet sufficient. Although the production of the drive system could be significantly reduced by the use of commercially available components such as the electric motors, but especially the continuous operation and the economic maintenance and repair of these elevators was still not sufficient to generate a corresponding demand.

Purpose and advantages of the invention

The object of the invention is in contrast, an initially mentioned lifting device, in particular an elevator or lift, with a drive unit for at least partially vertical lifting a load suspension to propose, which is significantly more economical compared to lifting devices according to the prior art, in particular realized a significantly more economical operation ,

This object is achieved on the basis of a lifting device of the aforementioned type, by the characterizing features of claim 1. The measures mentioned in the dependent claims advantageous embodiments and developments of the invention are possible.

Accordingly, a lifting device according to the invention is characterized in that a carrying device is provided which is substantially U-shaped. Preferably, this or the U is oriented substantially vertically. With such U-shaped support devices, for example, an endless or O-ring-shaped traction means can be advantageously disassembled or in the proper condition, i. be mounted as a closed O-ring.

In a U-shaped support device, for example, a bearing cap can be removed after supporting the corresponding shaft and then, for example, the bearing can be disassembled. Alternatively or in combination with this, the wrap-around traction means or a corresponding belt, etc., may well be dismantled or mounted. Subsequently, or in turn, then the bearing cap or the correspondingly removed support device component can be mounted.

In addition, with a U-shaped support device and an installation and / or removal of the shaft, in particular the output shaft, carried out in an advantageous manner. For this purpose, the width of the intermediate space or the opening / recess between the U-legs is advantageously greater than a diameter of the corresponding shaft or shaft section.

During the aforementioned assembly or disassembly of corresponding components, it is according to the invention not necessary to remove the train loaded tension element from the corresponding drive or output shaft, ie during these activities, the load bearing, for example, by the prescribed brakes or fuses for sure supported over the / the tension elements, so that the corresponding assembly or disassembly of the aforementioned component can be done in a simple manner. This leads to a particularly economical operation of the lifting device according to the invention.

A particular advantage of the U-shaped bearing element or the U-shaped bearing device is that through the corresponding opening of the U or its slot and a closed O-shaped ring like a belt of a reduction unit can be easily inserted or threaded and the Output shaft and the drive shaft can be placed.

Advantageously, the opening or the slot of the U-shaped support device to the corresponding opposite shaft. That that the U-shaped support device of the drive shaft has an opening or a slot in the direction of the output shaft and / or a U-shaped support device of the output shaft has an opening or a slot in the direction of the drive shaft.

Alternatively or in combination, however, it is also particularly advantageous to arrange the opening or slot upwardly, i. the U is arranged substantially vertically or upright. With the aid of this measure, it is achieved that the weight force or the pressure load of the corresponding shaft, which acts on the carrying device, is received in an advantageous manner by the carrying device or the carrying unit. Especially in the case where e.g. the U-shaped support device upright arranged in a vertically arranged shaft or the opening / the slot is oriented upward, may well also a threading or unthreading a closed O-shaped belt or the like to the end or the front side of the corresponding shaft to be performed around, especially with disassembled storage at the corresponding shaft end.

In first experiments it has been shown that the present invention in lifting devices with a two waves wrapping traction means is crucial. An endless or O-ring traction means must meet the highest safety standards and, in contrast to other purely mechanical support components are replaced comparatively frequently to represent no danger point even at the slightest wear or abrasion. This is especially necessary for passenger lifts in particular. Even the relatively wear-prone bearings can be removed and installed with a support device according to the invention without much effort.

Advantageously, can be realized by using a relatively stable bearing cap as a bearing seat advantageous support unit. By means of this measure, namely, a comparatively thin and thus inexpensive support housing can be realized, since the relatively stable bearing cap or bearing seat realizes sufficient stability of the housing. Also, by using a bearing cap as a bearing seat, the threading and unthreading of the traction means or closed belt, etc., as already explained above, is particularly easy to realize.

Preferably, at least one supporting device for supporting the drive shaft and / or the output shaft is provided at least during an assembly phase between the two bearing devices of the drive unit and / or between the two bearing units of the reduction unit.

With the help of the support device according to the invention components can be supported on the lifting device both during assembly and during disassembly in an advantageous manner and thus easier or easier to assemble or disassemble. This increases both the efficiency of the first installation or commissioning and in the maintenance or repair of the lifting device according to the invention.

For example, the drive system has several modules on, which are advantageously a maximum of 70 kg, preferably between 10g and 50kg, heavy. This makes it possible that on the one hand only a few, pre-assembled and possibly tested assemblies are necessary and on the other hand, these are good for a fitter or two technicians without technical aids such as crane, etc. good hand. Accordingly, eliminates both the time and cost of providing cranes, etc., for example, to mount the elevator in the initial installation, or to disassemble or reassemble individual components or assemblies for maintenance or repair purposes. Also complex on-site functional checks can be significantly reduced or eliminated.

By the support device according to the invention, on the one hand, the drive shaft and / or on the other hand, the output shaft or at least one of these bearing even under load, i. even with tension element subjected to tension, assembled or disassembled. As a result, the complex securing of the load receiver or the elevator car and / or the counterweight can be significantly reduced or eliminated. This is not only at the initial assembly, but rather especially during a repair or maintenance during operation of crucial advantage. As a result, the operating costs and maintenance costs are reduced to a considerable extent, so that not only a cost-effective production of the lifting device according to the invention, but above all a cost-effective operation of the lifting device according to the invention is ensured. This now seems to lead to the economic breakthrough of a lifting device according to the invention, in particular for use as so-called. "Home lifts", both for new construction as well as for retrofitting in existing buildings.

Preferably, the drive shaft and / or the output shaft has at least one support surface as the contact surface of the support device. This can be ensured that the support is no impairment or damage to the output shaft and / or support surface, what else would significantly limit the safe further operation of the lifting device according to the invention. Due to the specially provided and advantageously designed support surface can be ensured that even in zugbelasteten tension elements or under load, ie while the load, in particular the elevator car, elevator pulley and / or counterweight, is attached to the tension element or on the elevator rope or the like, components or component groups are advantageously removable or mountable.

Advantageously, the support unit comprises at least one support surface as the contact surface of the support device. This ensures in a corresponding manner that the support unit is not affected or damaged by the support by means of the support device according to the invention, even at high loads during disassembly or assembly.

By the advantageous support surface of the support unit and / or the particular annular or circumferentially arranged support surface of the output shaft or the drive shaft, a defined or predetermined support for the assembly or disassembly of corresponding components or elements of the lifting device according to the invention is realized, which is not only one exact, low-tolerance initial assembly, but also a careful disassembly and assembly or installation of individual component components or lifting elements guaranteed. This is especially important in lifting devices for transporting people. Accordingly, the hoist according to the present invention can provide high safety standards over many years or decades, especially in the passenger elevator area. This greatly improves the overall economy of the hoist according to the present invention.

Of particular advantage is a guide or a guide device for guiding the support device provided. This can be performed in an advantageous manner, especially when attaching or introducing the support device. For example, the support surface and / or the support surface is curved in an advantageous manner in the direction of the shaft axis, for example, concave or convex or prism-shaped. This ensures that a transversely or laterally introduced to the shaft axis support device according to the invention is securely positioned or not slipping or displaced in the axial direction. This increases the safety during the support by means of the support device according to the invention.

Alternatively or in combination with the curved support surface and / or support surface, this can be provided as a recess or groove and / or laterally or in the direction of the shaft axis next to the support surface and / or support surface, a survey or the like as a guide. This also a fixation in the direction of the shaft axis is realized.

In a particular embodiment of the invention, the support device has at least one wedge or a wedge-like support element, which is arranged for example between support unit and drive shaft or output shaft for supporting during the assembly or disassembly phase. A corresponding wedge or wedge-like element can advantageously be laterally, i. transverse to the vertical, are introduced into the corresponding space, so that the drive shaft or the output shaft is supported in an advantageous manner.

Above all, alternatively, the support device can also comprise at least one thread comprehensive screw, which is arranged for example substantially vertically or adjustable. An advantageous screw can be arranged or screwed, for example, during normal operation of the support unit and for the special case of operation, eg maintenance or repair, etc., for example, from below substantially vertically upward be adjusted against the drive shaft and / or output shaft until it is supported accordingly. After carrying out appropriate measures, such as repair or maintenance, etc., then the screw or the screw can be adjusted back or screwed back accordingly from the output shaft or the drive shaft, so that the corresponding shaft is free again.

In general, it is advantageous to arrange the supporting device for the special operating case, such as maintenance, repair or the like, on the output shaft and / or drive shaft in such a way that at least one of the bearings is advantageously relieved, so that this and / or further elements can be temporarily dispensed with or omitted Removable and thus interchangeable. This applies especially to components of the reduction unit, especially when using endless elements such as a belt, belt, etc.

In addition, it is also conceivable that when using reduction units with gears or the like quite individual gears can be replaced accordingly. In addition to the use of belts or gears, in principle also toothed belts, V-belts, ropes, belts, chains or the like as corresponding according to the invention interchangeable components are conceivable.

In an advantageous embodiment of the invention, at least one supporting device arranged at the front end on the drive shaft and / or output shaft and provided with at least one bearing device of the drive unit or the bearing unit of the reduction unit is provided. Here, the support device is an essential component of the support unit. Preferably, the support device comprises at least one bearing element, such as a rolling bearing or a rolling bearing arrangement with several rolling bearings, e.g. designed as a ball bearing, roller bearings or the like.

Basically, it is advantageous, the drive shaft and / or the Output shaft on one end face with a fixed bearing and on the other side or the opposite side to equip a floating bearing. One or both of these longs can be arranged or positioned in the advantageous carrying device.

In a particular embodiment of the invention, the support device has at least one removable during the assembly phase support member. For example, the end-side support element or the support device, which is preferably arranged substantially vertically, by means of a detachable connection, in particular a screw or the like, for the special case of operation such as maintenance or repair, etc., of the support unit, e.g. from a base plate or the like, are advantageously solved or removed.

The removable support member of the support device may, for example, wear or position the corresponding bearing during operation and / or be formed as a bearing cap or bearing cover.

For example, can be removed by removing the support member, the respective bearing in an advantageous manner along the drive shaft and / or along the output shaft. As a result, for example, an exchange of the corresponding bearing can take place and / or the traction means can be disassembled or exchanged according to the invention in a particularly simple manner.

Especially with the use of two shafts looping traction means, it is advantageous to provide a tensioning device for tensioning the traction means. This makes it possible that an optionally occurring during operation elongation or stretching of the traction means leads to no impairment of the operation. For example, a tension or compression spring is provided as a clamping element, which increases the distance between the drive shaft and the output shaft with a corresponding elongation of the traction means and further generates an advantageous clamping force.

Preferably, a tensioning device or a tensioning spring has a stop unit or a stop element which ensures a minimum distance between the drive shaft and the output shaft or a minimum distance between the two end faces of the tensioning device or tensioning spring which are adjustable relative to each other. For example, the stop element is designed as a stop sleeve, which is preferably arranged substantially circumferentially around the tension spring around. With the help of such a distance unit or spacer element ensures that at a reversal of direction, there is no adverse reduction in the distance between the drive shaft and output shaft, which could possibly occur slippage of the traction device occur. Such a slippage could also occur during the corresponding starting or accelerating of the lifting device according to the invention.

Advantageously, at least one separating device is arranged between the tension-loaded tension element of the load receiving device and the wrapping traction device, in particular on the circumferential side of the drive shaft or traction sheave. For example, this can be done as a radially oriented cutting disc or the like. Alternatively, or in combination, at least one labyrinth seal with a plurality of grooves, grooves, etc., a fabric ring or felt ring or the like can be arranged between the tension element and the traction means. By means of such a separation device or a separating element of the aforementioned type prevents, for example, lubricating oil, dirt or the like from the tension element to traction means can migrate or vice versa, which would lead to a significant security risk, especially in passenger elevators or the like.

In an advantageous manner, the separation device can also be realized as a scraper element, for example as a rubber lip or the like, which is arranged, for example, statically on the support unit and the drive shaft or the Output shaft strikes during turning operation accordingly. Also hereby, a migration of lubricating oil or the like from the tension element to the traction means can be prevented.

According to the invention, numerous advantages are realized, which consist primarily in that, for example, a standard or commercially available standard electric motor, preferably an asynchronous motor, or a so-called "gearless drive" drives the traction sheave by means of a standardized envelope drive and preferably by the separation of Traction sheave unit and drive motor replacement of both the electric motor and bearings of the Hülltriebeinheit and / or the traction sheave substantially without dismantling the entire drive or without hanging or relieving the elevator car or the counterweight is easily possible. This leads to an economically favorable operation of the lifting device according to the invention over many years.

Further advantages of the lifting device according to the invention will become apparent, for example, from the choice of the individual components, such as electric motor, bearings, enveloping, brake, which may preferably all consist of commercially available components or are freely available as standard components.

In addition, an advantageous, modular design of the drive system when required by higher lifting speeds, larger torques, etc., ensures the use of another or second drive motor, in particular series electric motor. This can be grown or flanged in an advantageous manner to the drive system.

Preferably, the drive shafts of the two drive motors are arranged substantially flush with one another or in axial extension relative to one another and / or arranged on opposite sides of the drive system. As a result, a particularly space-saving design of a correspondingly expanded modular drive system is realized. A further advantage of the present invention can be realized in that, due to the separation of motor and traction sheave, substantial weight savings of the individual components are achieved, in particular through the use of an already mentioned standard asynchronous motor or a "gearless drive".

Further advantages of the invention are particularly evident in terms of noise. For example, can be realized by the separation of drive motor and traction sheave advantageous ventilation of the drive motor, so that can be dispensed with a self or forced ventilation of the drive motor. So far, corresponding fan for the drive motors are often provided, which has then led to a disturbing noise.

In addition, an advantageous structure-borne noise decoupling between the drive motor and the traction sheave is made possible by the advantageous separation of drive motor and traction sheave unit. As a result, engine-inherent structure-borne noise is not conducted via the traction sheave and the ropes into the cabin or the load receiver or via the support unit or traverse into the building. This is especially in so-called "home lifts" or passenger lifts of considerable advantage, since in general even the slightest noise is considered a restriction of comfort.

In the sense of the invention, a supporting device is also arranged between two bearings of the drive shaft or output shaft when the supporting device or a part of the supporting device protrudes when supporting the shafts in the substantially horizontally oriented region between the bearings. This can also be achieved, for example, by aligning a support element such as a screw or the like substantially parallel to the shaft and supporting the shafts or the traction sheave or the like at the end, wherein a screw end presses against the shaft and protrudes in the said intermediate region of the bearings or is arranged. The opposite end of the Screw or the like is arranged or fixed to the support device in an advantageous manner.

embodiment

An embodiment of the invention is illustrated in the drawing and is explained in more detail below with reference to the figures:

Figur 1

eine schematische, perspektivische Ansicht einer Hebevorrichtung gemäß der Erfindung von vorne;

Figur 2

eine schematische, perspektivische Ansicht der Hebevorrichtung gemäß Figur 1 von hinten;

Figur 3

eine schematische, perspektivische Ansicht der Hebevorrichtung gemäß Figur 1 von der Seite;

Figur 4

eine schematische Schnittdarstellung der Hebevorrichtung gemäß Figur 1 und

Figur 5

eine schematische, perspektivische Ansicht einer zweiten Hebevorrichtung gemäß der Erfindung mit zwei Antriebsmotoren.

In detail shows:

FIG. 1

a schematic, perspective view of a lifting device according to the invention from the front;

FIG. 2

a schematic, perspective view of the lifting device according to FIG. 1 from the back;

FIG. 3

a schematic, perspective view of the lifting device according to FIG. 1 of the page;

FIG. 4

a schematic sectional view of the lifting device according to FIG. 1 and

FIG. 5

a schematic perspective view of a second lifting device according to the invention with two drive motors.

By means of cables or suspension means 23, for example, an elevator car (not shown in detail) and optionally a corresponding counterweight are moved in a vertical shaft. The support means 23 are driven by means of friction on support means grooves 19 of a traction sheave 20. The drive of an output shaft 3 and the traction sheave 20 is preferably carried out via a traction means according to the invention or an O-ring, ie endless V-ribbed belt 15. The V-ribbed belt 15 is preferably driven via an asynchronous motor 14 and a drive shaft 11.

The drive shaft 11 is supported by a support bearing 12 and a centering and support flange 13 in a rocker 10 rotatably mounted by means of a bearing 18 and about an axis of rotation. The motor 14 is centered on the rocker 10 and flanged. The rocker 10 or the / the V-ribbed belt 15 are biased by a clamping unit or spring 21. This prevents that even with an elongation of the V-ribbed belt 15 does not slip through it in the course of time.

The traction sheave 20 is according to the illustrated variant in Fig. 4 formed by a continuous shaft 3, the support discs 9 and the tube 8. shaft 3, support plate 9 and tube 8 are frictionally and / or positively connected to each other. In this case, an advantageous shrinkage process step in the production of the traction sheave 20 may be provided.

The tube 8 has for the frictional transmission of the drive and braking torques grooves 19 in which the support means 23 run. In addition, the tube 8 forms the preferably smooth running surface for the V-ribbed belt 15. The traction sheave 20 is mounted in a traction sheave housing by means of the bearings 4 and the centering and support flanges 16 and 5 via the side walls 2.

The shaft 3 has at one or both ends not shown spline profiles on which at least one brake rotor 7 is arranged or plugged. The centering and support flange 5 is preferably used as a starting and braking surface for the brake rotor 7. To the complete traction sheave 20 in the side cheeks 2 of the traction sheave housing 25 and remove can, point the side cheeks 2 openings 17 which can be closed with a component not shown.

The V-ribbed belt 15 is tensioned according to the invention with at least two preferably compression springs 21 via the rocker 10. The position of the springs is chosen so that the least two-way rocker 10 as little as possible deformed and the V-ribbed belt 15 is biased uniformly over its entire length.

The rocker bearing 18 has elements for structure-borne sound insulation. Furthermore, the rocker as well as the springs are decoupled against structure-borne noise by special damping elements.

All individual parts of the traction sheave housing 25, such as base plate 1, side walls 2, web 26, are preferably prefabricated so that they can be exactly mated together and positioned in the welding preparation by tongue and groove 22. The same applies to the rocker 10. The connection of a second motor 24 (see. Fig. 5 ) allows a modular design, if required by drive technology or for reasons of space.

In an advantageous variant of the invention, the traction sheave 20 can be statically supported against the traction sheave housing 25 without relieving the support means by means of one or more supporting and / or holding elements and thus wearing parts such as e.g. Bearings 4,12, V-ribbed belts 15 etc. are replaced.

For this purpose, the base plate 1 has an opening 27, preferably with internal thread 28, whereby for disassembly or assembly, for example, the bearings 4, 12, 18, the springs 21 and / or the shafts 3, 11 and / or the V-ribbed belt 15, etc., one in Fig. 4 separately, schematically illustrated support screw 30 can be screwed. The screw 30 is screwed in until it abuts against a support surface 29 of the traction sheave 20 and supports it. After that you can For example, the support flange 5 are removed or unscrewed and the bearing 4 are removed along the axis of the shaft 3. Optionally, the shaft 3 including the second bearing 4 can be removed.

In principle, after removing one of the bearings 4, the V-ribbed belt 15 can be removed or threaded. In this case, not necessarily the opening 17 of the support device according to the invention is necessary, but only very helpful. Without this opening 17, the V-ribbed belt 15 can optionally also be placed around the free end of the shaft 3 and mounted on the traction sheave 20. In general, an old or used V-ribbed belt 15 is not disassembled in the aforementioned manner, but rather cut and removed by simple means. That only the closed or O-ring, in particular new V-ribbed belt 15 is mounted accordingly.

Without further illustration, a support wedge may alternatively be provided for the disassembly or assembly of individual components or assemblies according to the invention between the traction sheave 20, in particular on the support surface 29, and the base or base plate 1 or is wedged. Again, an effective support of the drive system according to the invention can be realized, the cables 23 may continue to be under tensile load.

Preferably, the web 26 has a mounting opening, not shown, for laterally introducing and removing a support wedge mentioned above. In the normal operating case, this mounting opening of the web 26 is preferably closed by means of a cover.

Preferably, the side cheeks 2 of the traction sheave housing 25 are open upward so that the traction sheave 20 can be inserted into the housing 25.

Advantageously, the rocker 10 has two rotatably mounted bearings, which are supported in the side walls 2 of the traction sheave housing.

In a particular embodiment of the invention is within the two side walls of the rocker 10 which serve to accommodate the motor and the thrust bearing, arranged an envelope.

For example, the side wall of the rocker opposite the motor 14 has a support bearing for the drive shaft 11 of the V-ribbed belt 15.

It is advantageous if the spring tensioning device is supported on both side cheeks 2 of the traction sheave bearing.

Preferably, the spring forces for tensioning the V-ribbed belt 15 are arranged in or near the common force line of action of the motor 14, rocker 10 and V-ribbed belt 15.

It is particularly advantageous that the drive unit can be disassembled into individual components for transport into the building and / or in the building in order to facilitate transport.

In a particular embodiment, two motors 14, 24 are centered on a rocker 10 and connected to a connector such as a rocker. a connection sleeve positively connected to each other, wherein this or the connecting sleeve can fulfill the function of the drive shaft 11 for the V-ribbed belt 15 at the same time.

According to the invention, for example, by replacing the rope pulley 20 to a belt friction pulley, the drive system from the suspension rope to the suspension belt in the engine room or in the elevator shaft with relatively little effort to be rebuilt.

Preferably, the traction sheave 20 on a positive and / or frictionally shaped pipe section 8, on Both the V-ribbed belt 15 and the support means 23 are arranged.

Advantageously, a brake-side centering and support flange 5 is present, which takes over the function of the housing-side brake flange for the brake rotor 7.

In one possible variant of the invention, the traction sheave tube 8 is frictionally and positively connected to at least one support disc 9.

In a particular embodiment of the invention, at least one of the support disks 9 with the continuous shaft 3 of the traction sheave 20 frictionally and positively connected.

Preferably, the sheet metal blanks for the traction sheave housing 25 and / or for the rocker 10 to simplify the welding preparation plugged and fixed, in particular with tongue and groove formed.

In an advantageous embodiment of the invention, a motor 14 and / or two motors 14, 24 arranged for reasons of space centrally or approximately centrally to the traction sheave 20 on the traction sheave 20. In addition, 25 brakes 6 can be arranged to save space on both sides of the traction sheave housing.

Advantageously, 8 grooves can be attached to both sides of the support means grooves 19 on the outer diameter of the traction sheave tube, which prevent the migration of possible lubricants of the support means 23 to the belt running surface or the brake 6 towards or significantly complicate.

For example, the opening 17 is closed on the brake-side side cheek 2 of the traction sheave housing by a preferably insertable member to prevent the transport of a possibly existing lubricant to the brake disc out.

It is advantageous to provide the attachment points of the rocker 10 to the traction sheave housing 25 with damping elements in order to isolate the traction sheave housing 25 and the traction sheave 20 from vibrations and vibrations caused by the motor 14, 24 and bearing 12.

Furthermore, the motor 14, 24 for noise reduction, thermally be designed so that can be dispensed with a self-ventilator and / or a forced cooling fan.

Advantageously, by suitable measures such as e.g. Choice of the center distance, belt transmission ratio, belt profile of the V-ribbed belt 15 or rubber compound of the V-ribbed belt 15 are dispensed with a profiling of that portion of the traction sheave tube 8 on which the V-ribbed belt 15 runs.

Preferably, the belt-side traction sheave bearing 4 is held by a seated on the outer diameter of the bearing centering and support flange 5 so that upon disassembly of this flange 5, an opening is released through which the V-ribbed belt 15 of the Hülltriebes for assembly purposes and / or can be threaded.

In a particular embodiment of the invention, the belt-side rocker bearing 12 is held by a seated on the outer diameter of the bearing centering and support flange 13 so that upon disassembly of this flange an opening is released, through which the V-ribbed belt 15 of the Hülltriebes for assembly purposes and / or can be threaded out.

For easy installation of the V-ribbed belt 15, the drive shaft 11 can be assembled and disassembled together with the centering and support flange 13 and the support bearing 12 as a unit.

It is particularly advantageous to design the bearing of the drive shaft 11 on the motor side as a movable bearing and a support bearing side as a fixed bearing 12.

In principle, the drive motor 14, 24 can also be placed elsewhere, in order to satisfy the respective usually limited space conditions. For example, the drive motor 14, 24 can also be arranged below the drive disk 20 or the base plate 1.

Exemplary features of an embodiment according to the invention:

• Dual circuit safety brake from Mayr
• powerful asynchronous motor from ABB
• High performance V-ribbed belts from Contitech
• Wear-free encoder from Kübler
• whisper-quiet system, because no fan required
• modular construction
• very easy to maintain
• Hardened traction sheave
• high quality stock
• very easy
• space-saving installation
• no additional option cards required with the frequency converter
• The asynchronous motor used makes it possible to use any lift-compatible frequency inverter

Advantageous, exemplary construction - also for modernization:

• Simple disassembly makes it easy to handle even in modernizations to and within the building
• easily dismantled into four main portable components:
  • engine
  • seesaw
  • Traction sheave with traction sheave housing
  • brake

• sehr leise, baumustergeprüfte Zweikreis-Sicherheitsbremse ROBA® - duplostop® von Mayr - auch als Schutzeinrichtung gegen unkontrollierte Fahrkorbbewegung nach oben einsetzbar

The individual components each weigh in between 10kg and 40kg

• very quiet, type-tested dual-circuit safety brake ROBA® - duplostop® from Mayr - can also be used as a guard against uncontrolled car movement upwards

Easy replacement of the components:

• all individual components are e.g. designed for a service life of more than 20,000 operating hours
• fast engine change with applied ropes and under load
• easy belt replacement with applied ropes and under load
• easy storage change with applied ropes
• Encoder change takes place without calibration
  • Encoder but wear-free
• future-oriented:
  • by replacing the traction sheave is a support means change from the rope to a future support means, such as belt, easily possible

Advantages of a possible embodiment with a whisper-quiet belt drive:

• High performance V-ribbed belts CONTI-V MULTIRIB® from Contitech
• a special treatment process reduces the belt elongation to a negligible size
• A special belt tensioning system eliminates the need for manual tensioning of the belt during the entire service life
• a special material mixture of the belt in conjunction with a built-in belt tensioning system torque arm prevents slippage of the belt in all normal operating conditions

LIST OF REFERENCE NUMBERS

1

baseplate

2

side cheek

3

wave

4

camp

5

support flange

6

brake

7

brake rotor

8th

pipe

9

supporting discs

10

seesaw

11

drive shaft

12

support bearings

13

support flange

14

engine

15

V-ribbed belts

16

support flange

17

mounting hole

18

rocker bearing

19

Support center grooves

20

traction sheave

21

feather

22

Tongue and groove arrangements

23

rope

24

engine

25

Traction sheave housing

26

web

27

opening

28

inner thread

29

support surface

30

screw

Claims (7)

Lifting device, in particular elevator or lifting platform, with a drive unit for at least partially vertical lifting of a load receiver, wherein the drive unit has at least one drive motor (14, 24) and at least one drive element (11) comprising a drive shaft (11), wherein at least one loaded to train Zugelement (23) is arranged at least between the drive unit and the load receiving, wherein at least one support unit (1) for carrying at least the drive motor (14, 24) is provided, wherein the drive unit at least one drive element (11) and at least one on a The reduction unit is formed as a traction drive with at least one the drive element (11) and the driven element (20) looping traction means (15), wherein the drive unit at least one, in particular two spaced apart as well as on both sides of the Antr Bearing elements (12) arranged for rotatably supporting the drive shaft and wherein the reduction unit at least two spaced and both sides of the driven element (20) arranged bearing units (4) for rotatably supporting the output shaft (3), characterized in that at least one At least one of the bearing device (12) of the drive unit or the bearing unit (4) of the reduction unit receiving support means (2, 5, 13) is provided on the front side of the drive shaft (11) and / or output shaft (3) is provided, and that the supporting device ( 2, 5, 13) is substantially U-shaped. Lifting device according to claim 1, characterized in that the carrying device (2, 5, 13) has at least one support element (5, 13) removable during the assembly phase. Lifting device according to one of the preceding claims, characterized in that at least one supporting device (30) for supporting the drive shaft (11) and / or the output shaft (3) during an assembly or disassembly phase between the two storage devices (12) of the drive unit and / / or between the two bearing units (4) of the reduction unit is provided. Lifting device according to one of the preceding claims, characterized in that the drive shaft (11) and / or the output shaft (3) at least one support surface (29) as a contact surface (29) of the support device (30). Lifting device according to one of the preceding claims, characterized in that the carrying unit (1) comprises at least one support surface (28) as a contact surface (28) of the supporting device (30). Lifting device according to one of the preceding claims, characterized in that the supporting device (30) has at least one wedge. Lifting device according to one of the preceding claims, characterized in that the supporting device (30) has at least one screw element (30) comprising at least one thread.

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