Lifting device for transporting a load in a lifting device

Abstract

Lifting device (100; 102; 104; 106; 106) designed to move at least one load vertically over a lifting height of up to three meters between an upper access point arranged at the head of the lifting device (100; 102; 104; 106; 106) and a lower access point located vertically below it, wherein the lifting device (100; 102; 104; 106) comprises a cabin (10) designed to accommodate at least one person and at least one drive device (88; 88') designed to move the cabin (10) with at least two drive units (21; 21') arranged parallel to each other, - wherein the drive units (21; 21') for moving the cabin (10) each comprise a support belt (22) designed as a flat belt and each comprise a motor-driven winding roller (60) designed for winding the support belt (22), - wherein the support belts (22) each run from an end stop (86) in the manner of a pulley system over at least one support roller (62) arranged below the end stop (86) and designed to support the cabin (10), and over at least one deflection roller (64) arranged stationary between the winding roller (60) and the support roller (62) to the winding roller (60), and wherein the support belts (22) interact with the winding roller (60) in a force-fit manner, - wherein the support rollers (62) are attached to a roof (14) of the cabin (10), - and wherein the drive units (21; 21') and the support rollers (62) are arranged in a vertical plane above the cabin (10), characterized in that - the winding rollers (60) of at least two of the parallel drive units (21) are arranged together on a drive shaft (89) of a motor (90) designed to drive the drive units and - the parallel drive units (21) are each assigned at least one self-operating compensating device (92) designed in the form of a compensating rocker or a compensating roller, wherein the compensating device (92) uses lever forces to distribute the load of the cabin (10) evenly onto the flat belts (22). and / or that - the lifting device (100; 102; 104; 106) comprises at least two motors (90) designed to drive the drive units, each assigned to one of the winding rollers (60), and - the drive device (88') comprises at least one motor control element (92') designed to regulate the speed of the respective motors (90) in order to distribute the load of the cabin (90) evenly onto the flat belts (22) of the drive units.

Description

Technical field

[0001] The present invention relates to a lifting device designed to move at least one load, for example a person and / or an animal, vertically over a lifting height of up to three meters between an upper access point located at the head of the lifting device and a lower access point located vertically below it. In this sense, a lifting device is therefore a device for the vertical transport of persons or goods between different levels of a building or structure.

[0002] The lifting device comprises at least one cabin designed to accommodate at least one person and / or at least one animal, and at least two drive units arranged parallel to each other. For moving the cabin, each drive unit includes a carrying belt and a motor-driven winding roller designed to wind up the carrying belt. The parallel drive units therefore each have separate carrying belts and separate winding rollers.

[0003] Starting from an end stop, the carrying belts each run - via at least one support roller arranged below the end stop and designed to support the cabin, as well as - via at least one deflection roller, fixedly arranged between the winding roller and the support roller - to the winding roller of the drive unit.

[0004] The carrying straps are guided in the manner of a pulley system over the carrying roller attached to the cabin and over the deflection roller which is fixedly arranged between the winding roller and the carrying roller, and run independently of each other.

[0005] To move the cabin, the winding roller can be rotated in opposite directions, whereby the support belts are wound onto the winding roller or unwound from the winding roller. State of the art

[0006] Lifting devices for private residences are already widespread. They serve in particular to assist people with limited mobility in overcoming one or two floors in their own homes.

[0007] These small home lifts can be installed independently of the staircase construction and can be used with or without a masonry shaft. Typically, these lifts include a rope drive, a cabin, and guide rails designed to direct the cabin's movement.

[0008] An example of such a house lift is described in publication EP 2 356 056 B1. This lift can be installed either freestanding or in a hoistway. The cabin is moved by means of suspension cables and guided by two vertical guide rails of a hoistway structure. A double pulley system is provided as the drive unit. Each pulley system comprises a suspension cable, a motor-driven winding pulley, and at least one deflection pulley. Chains, steel cables, and preferably toothed belts are proposed as suspension cables or belts.

[0009] To create space for the cabin inside the hoistway, EP 2 356 056 B1 teaches that the winding rollers should be arranged in opposite corner areas of the hoistway structure and mounted on the longitudinal sides of the hoistway structure or on the side walls of the hoistway. This provides the cabin with more vertical space within the hoistway. The deflection pulleys and the support rollers are attached to the side supports of the cabin. With this lateral suspension, the load is concentrated on the loaded side supports, which can lead to local deformation of the loaded side supports and the cabin floor. Furthermore, this design requires sufficient width for the installation of the lifting mechanism, as the traction element, drive pulleys, deflection pulleys, and support rollers are located laterally to the side of the cabin.

[0010] Document KR 100821640B1 describes a lift that makes no mention of guide rails or a shaft structure. This lift is primarily designed for high-rise buildings or large residential complexes and utilizes a complex system of suspension cables, drive wheels, and counterweights to move and level the cabin. The installation, manufacture, and maintenance of this cable-operated lift are correspondingly complex.

[0011] A lifting device for a pallet truck, specifically for a storage and retrieval machine, is known from German patent application DE 10 2019 115 025 A1. In the drive mechanism of this lifting device, a flat belt is guided over a deflection pulley, similar to a block and tackle, to enable efficient power transmission and precise control of the pallet truck's movement. This lifting device is not designed for transporting people. Description of the invention: Problem, solution, advantages

[0012] Based on the disadvantages and shortcomings outlined above, and taking into account the prior art described, the present invention aims to further develop a lift device of the type mentioned at the outset in such a way that the lift device can be manufactured and installed in a particularly simple, space-saving, and cost-effective manner. The objective is, in particular, to provide a customized yet cost-effective vertical home lift for people with disabilities and / or for animals.

[0013] In particular, the drive unit for lifting the cabin should be designed in such a way that the torque for a drive motor of the lifting device remains as small as possible, safety is ensured, and vibration during operation remains as low as possible.

[0014] This problem is solved by a lifting device with the features specified in claim 1. Advantageous embodiments and expedient further developments of the present invention are characterized in the respective dependent claims.

[0015] The present invention is therefore based on the fact that the support belts are each designed as flat belts, i.e., they have a structure-free or smooth inner surface. In contrast to toothed belts, flat belts transmit forces by frictional engagement.

[0016] The drive unit is therefore designed as a double rope drive with pulley system, using a flat belt instead of a rope.

[0017] Flat belts have a smaller thickness and lighter weight compared to conventional steel cables, which helps to reduce the overall weight and increase the efficiency of the lifting device.

[0018] Furthermore, flat belts can achieve very high rotational speeds and transmit large torques. They can be wound onto the winding rollers in a multi-layered configuration with concentrically stacked windings. This allows for smaller deflection radii compared to ropes, chains, and toothed belts. Smaller deflection radii result in lower torques at the lifting device's gearbox, thus enabling the use of smaller gearbox sizes. The gearbox transmits the power of a motor designed to drive the drive unit to the winding rollers. The motor is therefore designed to drive the winding rollers and thus move the flat belts and the cabin. The flat belts couple the cabin to the motor.

[0019] The use of flat belts instead of ropes, chains or toothed belts makes it possible to design the drive device more compactly and to install it in a smaller installation space while maintaining the same performance.

[0020] Furthermore, flat belts allow for a more flexible design of the lifting mechanism, as they offer greater flexibility compared to steel cables, chains, or toothed belts and adapt better to different winding roller diameters. Additionally, flat belts are considered virtually maintenance-free compared to cables, chains, and toothed belts, as they do not require lubrication.

[0021] Furthermore, the use of flat belts instead of steel cables, chains and toothed belts reduces noise caused by metal friction and improves driving comfort.

[0022] Another advantage of the drive unit of the lift device of the present invention is that it requires fewer components compared to a classic toothed belt drive, which allows for a simpler design and simplifies assembly.

[0023] In the present invention, the support rollers are attached to the roof of the cabin. The support rollers can be attached directly or indirectly to the roof. Furthermore, the drive units are arranged in a vertical plane above the cabin.

[0024] In other words, the flat belts, deflection pulleys, and idler pulleys are arranged in the vertical plane above the cabin. The roof-mounted suspension and the arrangement, which is coplanar to the cabin in the vertical plane, leaves the sides of the cabin free, offering greater flexibility in the placement of doors or access points.

[0025] In an advantageous embodiment, the flat belts are guided from the support roller to the stop element over at least one further deflection roller, wherein the first deflection roller and the further deflection roller are arranged in a common horizontal plane and are positioned relative to the support roller such that the flat belt runs vertically between the first deflection roller and the support roller, as well as between the further deflection roller and the support roller, i.e., in the conveying direction of the platform or cabin. The vertical guidance of the flat belts to and from the support roller, by means of the two deflection rollers arranged at the same height relative to each other, stabilizes the movement of the flat belts and increases the energy efficiency of the lifting device.

[0026] Regarding the arrangement, the support rollers can be positioned centrally on the cabin roof or distributed symmetrically across the roof. In this arrangement, the drive units transmit the tractive force directly perpendicular to the cabin. The cabin's center of gravity is therefore located directly below the point of application of the support rollers. The forces of the drive system thus act directly on the cabin, minimizing potential imbalances or unwanted movements, as the drive unit does not exert any horizontal forces or torques. This ensures safe and stable cabin movement.

[0027] Since a roof-mounted lift optimally distributes the load across the cabin and prevents it from being transferred to the floor, the cabin floor can have a thinner wall thickness than, for example, the roof and side elements. This allows the floor to be very thin. As a result, the lift mechanism can be designed so that the cabin is accessible at all entry points. Ideally, the cabin—in other words, the mobile unit of the lift mechanism—is accessible from all sides.

[0028] The floor can be made of steel, for example, a steel platform. Alternatively, due to the roof suspension, the floor can also be made of lighter materials than steel, such as wood, perhaps sourced from regional forestry.

[0029] In contrast to a side suspension, a roof suspension allows the cabin housing to be lighter and have a thinner floor.

[0030] The flat belts can be made primarily from synthetic materials, such as plastics (e.g., polyamide, polyester, and / or aramid), from at least one elastomer (e.g., rubber), from at least one composite material (e.g., leather-plastic laminate), or from natural materials (e.g., leather). Flat belts made from these materials are lightweight yet highly durable and offer particularly quiet operation. Preferably, the flat belts are made primarily from at least one polymer (e.g., high-tech polymers) and have at least one, preferably several, steel strands for reinforcement. Compared to conventional steel cables, this allows for a higher load-bearing capacity with a reduced metallic cross-section.

[0031] Advantageously, the lifting device includes at least one speed control unit designed to regulate the speed of the winding rollers depending on their diameter. This speed control unit adjusts the speed to the winding roller diameter because the diameter of the winding rollers increases non-linearly as the flat belts are wound. Thus, the speed control unit enables a constant travel speed or adapted acceleration and deceleration.

[0032] In an advantageous embodiment of the present invention, the winding rollers of at least two of the drive units, arranged parallel to one another, are mounted together on a drive shaft of a motor. To compensate for diameter differences of the winding rollers caused by variations in the thickness of the flat belts, the parallel drive units are advantageously equipped with at least one self-acting compensating device, designed as a compensating rocker or a compensating roller. This compensating device uses leverage to distribute the load of the cabin evenly across the flat belts.

[0033] The compensating device is arranged at the end stop of the flat belts, for example, interposed between the further deflection pulley and the end stop. Advantageously, the deflection pulleys are arranged such that the flat belts run essentially horizontally to the compensating device. Furthermore, the deflection pulleys are advantageously designed such that the flat belts run from the support pulley essentially perpendicular to the deflection pulley.

[0034] To enable optimal winding, the deflection rollers of a drive unit are advantageously arranged in such a way that the flat belts run at an angle of about 30 degrees to the winding roller.

[0035] Independently of or in conjunction with the above, the lifting device of an advantageous embodiment of the present invention comprises at least two, preferably three or four, motors designed to drive the drive units. Each motor is assigned to one of the winding rollers. To ensure the most stable movement of the cabin, the drive device includes at least one motor control element designed to regulate the speed of the respective motors in order to distribute the cabin load evenly across the flat belts of the drive units.

[0036] The lift device is advantageously designed for subsequent installation in a building or structure with an upper level, for example an upper floor, and a lower level below it, for example a lower floor.

[0037] For suspending the drive units, the lift device advantageously comprises at least one suspension by means of which the drive units are suspended from a building ceiling of the upper access point and / or from a structure arranged in the area of ​​the upper access point, in particular a self-supporting structure.

[0038] This supporting structure can replace a masonry shaft. The supporting structure laterally defines a vertical space in which the cabin moves and restricts the cabin's movement within this space. The supporting structure therefore includes at least one shaft boundary element that defines the vertical space in which the cabin moves.

[0039] Advantageously, the supporting structure is designed to be open, at least on the lower floor, whereby the supporting structure limits the vertical space on at most one side and allows access to the cabin from various sides of the building or the structure surrounding the elevator. The supporting structure can be designed to be so open on the lower floor that it allows the cabin to swing freely.

[0040] The supporting structure is advantageously located at least in the area of ​​the upper access point. The supporting structure comprises a suspended ceiling and frame girders designed to support the suspended ceiling.

[0041] Advantageously, the cabin and the drive unit are suspended from the frame ceiling, with the frame ceiling being designed to distribute the load onto the frame supports.

[0042] The frame deck is designed to support the nominal load, the weight of the load-bearing device, the drive unit, and, if applicable, the compensating unit. The frame deck then transfers the load to the frame beams. This suspension from the frame deck allows the weight force to be distributed across the entire structure of the frame deck and from there evenly transferred to the frame beams. Because the load is distributed across the frame beams, the individual frame beams can be less robust than would be the case, for example, with a lateral suspension.

[0043] By distributing the loads across the frame deck, local point loads on the frame beams are minimized. This extends the service life of the supporting structures and reduces the risk of material fatigue or failure.

[0044] Furthermore, suspending the drive unit from the frame ceiling makes installation and maintenance easier, as it is more accessible and does not need to be mounted directly on the side frame supports.

[0045] The frame ceiling is preferably modular in design. For suspending the cabin, the drive unit, and, if applicable, the compensation unit, the frame ceiling has at least one suspension bracket connecting opposite sides of a surrounding frame. Advantageously, the frame ceiling has a modular design, with the suspension bracket being attachable to at least two different points on the frame. The frame ceiling is therefore advantageously designed to be adjustable in modular increments of, for example, 50 mm.

[0046] Operating elements for the lift device, such as a dead man's switch (emergency stop button), emergency lowering, alarm indicator, and / or facial recognition, are arranged on at least one vertical handrail extending between the ceiling and floor of the cabin in an advantageous embodiment of the invention. The handrail is designed so that the user of the lift device can hold onto it. Arranging the operating elements on a handrail allows the controls or function buttons to be positioned at different heights. For example, an additional emergency stop button can be located near the floor. Should a person fall, the emergency stop button is within easy reach. Furthermore, users, for example those familiar with public transportation, are accustomed to operating elements being located on handrails. The sensors and electrical components for the operating elements can be located inside the handrail.

[0047] The present lift device is preferably designed to be so small and lightweight that, according to the German Ordinance on Industrial Safety and Health, no technical inspection is required for its approval. Advantageously, the lift device has a maximum travel height of three meters and a maximum travel speed of 0.15 meters per second. Such lift devices are not subject to the standards and safety regulations for elevators and are also referred to as house lifts, home lifts, vertical lifts, platform lifts, passenger lifts for the home, mini-lifts, vertical elevators, or people's lifts.

[0048] The home lift can be designed, for example, for retrofitting into a building with multiple floors or levels. The building can be a residential building, such as an apartment or a private house, like a single-family or multi-family home, or a commercial building, such as an agricultural building, like a barn.

[0049] Advantageously, the drive unit is designed to continuously acquire position data reflecting the cabin's current orientation, tilt, and position. Based on this data, it automatically performs electronic, mechanical, and / or hydraulic compensating measures to maintain the cabin in a horizontal and balanced position and to prevent or counteract horizontal deflections, i.e., pendulum movements. The lift mechanism is therefore self-leveling.

[0050] To detect the spatial position, orientation, and / or movement of the cabin and / or the flat belts, the compensation device can include at least one position sensor. The lifting device is advantageously designed to regulate the drive unit based on the data acquired by the position sensor in order to distribute the cabin load evenly across the support lines.

[0051] The position sensor, also known as an inclination sensor or tilt sensor, measures the cabin's deviation from the horizontal (ground) plane or the direction of gravity. The position data acquired by the position sensor can include various parameters, such as position angle, direction, acceleration data, and / or vibration data.

[0052] The term "self-leveling" refers to the fact that the lift device is able to automatically level the cabin horizontally based on the acquired position data, or to maintain a level cabin position and prevent pendulum effects. The lift device can therefore automatically level the cabin horizontally without requiring any external intervention by a person or the use of a structural element connected to the cabin, such as a mechanical guide rail.

[0053] A self-leveling lift device that uses electronic and / or mechanical and / or hydraulic compensating measures to position the cabin can therefore partially or even completely dispense with traditional guide rails.

[0054] In an advantageous embodiment of the present invention, the lift device is free, at least on the lower floor, from structural elements such as guide rails which can be connected to or engaged with the cabin and are designed to guide, control and align the movement of the cabin along a predetermined linear path.

[0055] The complete or partial elimination of conventional guide rails allows access points to the cabin to be located on different sides of the space in which the cabin moves vertically. By using compensating measures instead of traditional mechanical guide rails, the lift system becomes lighter and more flexible. Furthermore, these compensating measures can be used in addition to traditional mechanical guide rails. This allows, for example, the supporting structure from which the cabin and drive unit are suspended to be designed to be particularly lightweight, minimizing or even completely preventing peak loads caused by swaying or tilting movements of the cabin.

[0056] The present invention thus provides a simple and retrofittable lift device that requires little space and offers the possibility of individual adjustment of the dimensions of the lift device.

[0057] Furthermore, a self-leveling lift system offers the advantage of improved passenger safety and comfort. The cabin remains in a horizontal and balanced position at all times, minimizing the risk of rocking or unpleasant swaying during the ride.

[0058] To enable the cabin to automatically align itself horizontally, the lifting device includes at least one position sensor designed to continuously detect the cabin's current position. Furthermore, the lifting device includes at least one control unit designed to evaluate the position data acquired by the position sensor.

[0059] The drive device is designed to detect electrical control signals provided by the control unit and, depending on these signals, to perform compensatory actions to keep the cabin in a horizontal and balanced position. In other words, the drive device has at least one actuator or control element designed to provide electronic, mechanical, and / or hydraulic compensatory actions, based on the position data detected by the position sensor, to level the cabin horizontally.

[0060] The drive system is therefore able to process electrical signals supplied by a control unit and subsequently initiate automatic compensatory measures to keep the cabin horizontal and balanced at all times. These compensatory measures are carried out automatically and can be optimized with the aid of artificial intelligence to react to changes in cabin tilt, weight shifts within the cabin, or the current distribution of the load carried in the cabin.

[0061] The control unit can interact with the self-operating compensating device, designed as a rocker arm or a compensating roller, and / or with the motor control element. Furthermore, the control unit can interact with the motor control element.

[0062] In an advantageous embodiment of the present invention, the guidance and stabilization of the cabin is achieved at least partially and / or at least in certain areas by magnetic or electromagnetic fields. In this embodiment, the drive unit comprises, as an actuator element, at least one magnetic element, in particular at least one electrical and / or magnetic coil, to provide the electronic compensation measures. The electrical and / or magnetic coil is configured to automatically generate a defined magnetic field, such as a defined electromagnetic field, depending on the detected position data, in order to align and level the cabin and to counteract horizontal deflections, i.e., pendulum movements, of the cabin.

[0063] Preferably, in this embodiment, the drive unit comprises several magnetic elements that generate at least one magnetic or electromagnetic field. The position sensors are designed to detect the electric field generated by the magnetic elements. In order to selectively change the magnetic field and thereby align and level the cabin accordingly, the drive unit directs defined electric currents through the magnetic elements based on the detected control signals.

[0064] The cabin's horizontal position can therefore be corrected using magnetic elements. The use of magnetic elements offers the advantage of precise and sensitive adjustments to changes. Corrective measures can be carried out quickly and efficiently.

[0065] The drive unit moves the cabin vertically between different levels or floors and access points located within a space designated for the cabin, a so-called shaft. In this context, a shaft refers to the space in which the cabin moves. As mentioned earlier, a masonry shaft is not required. This means that the shaft can be an open space, for example, open on all sides or bounded by a wall on only one side.

[0066] The flat belt is attached to the cabin and suspended, for example, from the ceiling of the upper floor or from the supporting structure on the upper floor. The drive unit can be designed like a cable pulley or rope drive, using a flat belt, such as a reinforced flat belt, as an alternative to the rope.

[0067] The flat belt is connected to at least one drive element, which drives the flat belt and thus moves the cabin. This is achieved by the winding roller, which can also be referred to as a drive roller or drive wheel.

[0068] As mentioned above, a flat belt has the advantage over a rope that it can be wound around tighter radii, potentially resulting in a lower torque requirement. Therefore, using a flat belt instead of a rope allows for a reduction in drive torque, leading to smoother and quieter operation and reducing mechanical oscillations and vibrations of the drive unit.

[0069] To effectively minimize vibrations, the torque must be precisely matched to the requirements of the lifting device. Experience has shown that vibrations can be avoided particularly effectively when a flat belt with a width of approximately 20 mm to 50 mm, especially 30 mm to 40 mm, is used for conveying heights of up to approximately three meters and a maximum conveying speed of 0.15 meters per second.

[0070] Because a smaller and therefore more cost-effective gearbox can be used when using a flat belt instead of a rope, the use of a flat belt also enables space and cost savings.

[0071] In addition to the flat belt, the cabin can be secured by means of at least one safety rope or safety strap attached to the ceiling of the building or the supporting structure.

[0072] Advantageously, the suspension of the drive unit comprises at least two cabin suspension elements designed for attaching the cabin to the flat belt, which are mounted at spaced-apart points on the cabin. For this purpose, the suspension includes the double flat belts, each encompassing at least one flat belt end facing the cabin. Each cabin suspension element is assigned one flat belt end. The drive unit includes at least one winding roller for each flat belt end. Each winding roller is designed to move its assigned flat belt end directly or indirectly. This allows the cabin to be raised or lowered. In other words, the flat belts run over winding rollers and thus move the cabin up and down between floors.

[0073] The terms "above", "below", "front", "back", "horizontal", "vertical", "over", "below", "upwards", "downwards", "inside", "outside", "inwards", "outwards", etc. are used to indicate the positions and orientations that are appropriate for the intended use and arrangement of the lift device and for a user who is in the cabin and looking towards a door of the cabin.

[0074] The door on the cabin is usually at the front, but can also be half-height or, for example, designed as a barrier.

[0075] The winding rollers of the drive unit are preferably motor-driven, for example by at least one electric motor. The drive unit advantageously comprises at least one motor for driving the winding rollers. The motor can be located in the area of ​​the control unit.

[0076] In addition to or as an alternative to the compensation measures using the aforementioned magnetic element, the drive unit can also be designed such that the motor drive of the drive elements is controlled as an electrical and / or mechanical compensation measure. In this case, the drive unit is designed to control and monitor the motor drive of the drive elements based on the detected control signals in order to align and level the cabin. In other words, in this embodiment, the motor of the drive elements is designed as an actuator element. This enables precise alignment and leveling of the cabin.

[0077] There are therefore various designs of the self-leveling lift device. The leveling measures can be achieved via a suspension, for example a multi-point suspension, such as a four-point suspension, of the flat belts, whereby the motor drive of the respective winding rollers of the flat belts is individually controllable and self-leveling.

[0078] Furthermore, as described above, the compensation measures can be implemented by the aforementioned magnetic element, for example, in the form of a load measuring device referred to as a UC-AP sensor controller. A load measuring device referred to as a UC-AP sensor controller is a device for measuring loads that includes a sensor controller. This load measuring device, which comprises a microcontroller as its control unit and a load unit with position sensors, measures and processes loads precisely. The microcontroller controls the device and evaluates the data, while the load unit performs the actual measurements. This combination provides accurate load information for a wide range of applications.

[0079] Furthermore, the compensatory measures can be carried out using the balancing seesaw or balancing roller described above.

[0080] It is also conceivable that the compensating measures could be achieved by means of a counterweight attached to the cabin, for example, a trolley mounted on the cabin roof. In this case, the counterweight acts as an actuator. A combination of the various aforementioned compensating devices or measures is possible.

[0081] The drive mechanism is advantageously designed without a counterweight. This allows for more effective use of the shaft's cross-section, as no space is required for a counterweight, and results in a more compact design. Elevators without counterweights also have the advantage of being more energy-efficient and simpler in construction. This can lead to lower operating costs and easier maintenance. Eliminating the counterweight not only saves the cost of the counterweight itself, but also the space that would otherwise be reserved for it in the shaft. This can be particularly beneficial in buildings with limited space.

[0082] As mentioned above, the shaft advantageously includes at least one shaft boundary element, at least on the upper floor, which limits the shaft and controls the movement of the cabin within it. The shaft boundary element can be, for example, a wall element, such as a brick wall or wall cladding. Advantageously, the lift device is positioned so that it is in contact with a wall of the building. For example, the lift device can be located in a corner of the building. In this way, the building wall can be used as the shaft boundary element, eliminating the need for a separate shaft boundary element.

[0083] Instead of a wall element, the shaft boundary element can also be another structural element, for example, at least one rail along which the cabin can slide as it moves in the shaft. This could be, for example, a sliding rail or a guide rail with which the cabin is in contact.

[0084] In a particularly advantageous embodiment of the invention, the shaft is open, at least on the lower floor. For the purposes of this invention, an open shaft is defined as one that is limited by a structural element on at most one side. For example, the shaft may only have a shaft boundary element, such as a back wall, at its rear. This open design of the shaft allows the elevator device to be adapted particularly freely to the specific conditions of the building.

[0085] In another particularly advantageous embodiment, the shaft is closed on the upper floor and open on the lower floor.

[0086] In this embodiment, the shaft boundary element extends at least from the ceiling of the upper floor to the floor of the upper floor. However, the shaft boundary element can also extend from a ceiling of the upper floor to a floor of the lower floor.

[0087] Particularly on the upper floor, the shaft boundary element can be associated with a shaft frame or structure that encloses the shaft on all sides. Alternatively, especially on the upper floor, the shaft boundary element can comprise wall elements that horizontally enclose the shaft and define its outer circumference in cross-section. For example, the shaft can include a cladding or lining layer that surrounds and protects the shaft of the elevator device on the upper floor. The shaft cladding can be made of various materials such as metal, glass, plastic, or wood and serves to enhance the aesthetic appearance of the shaft as well as prevent dirt and damage. Advantageously, the suspension and control unit are located within the enclosed area of ​​the shaft.

[0088] The cabin advantageously comprises a housing in which the cabin floor and ceiling are rigidly or immovably connected to each other by supports. This allows the shaft boundary to be designed in such a way that it interacts with the cabin housing to control the cabin's movement within the shaft and prevent swaying. The housing can, for example, be a self-contained cabin enclosure.

[0089] The lift cabin is advantageously modular in design, consisting of a base plate, a load-bearing top plate, and vertical support columns that can be positioned on the base and top plates as needed. To allow for individual configuration, the base and top plates can, for example, be designed like perforated plates with regularly spaced recesses for attaching the support columns. This modular design makes it possible to adapt the cabin to different room sizes and shapes. The base is therefore advantageously designed as a platform, and the top plate as a cover plate.

[0090] Furthermore, the cabin is preferably modular in design. Modular in this context means that it is made up of multiple parts. This allows the cabin to be assembled on-site during the installation of the lift mechanism.

[0091] The cabin's housing ceiling has at least one roof suspension point by which the cabin is suspended from the head of the lift device. This allows the full width of the shaft to be used for the cabin space and, if applicable, the shaft boundary element.

[0092] The cabin housing can be less tall than the lower floor. In the case of an open shaft, if the cabin is located entirely within the lower floor, it is suspended freely from the suspension. The movement of the flat belts is then limited only by the dimensions of the shaft in the upper floor and / or in the area of ​​a ceiling opening located between the floors, as well as, if applicable, by the shaft's one-sided boundary in the lower floor. Therefore, if the cabin is located entirely within the lower floor, its movement is essentially controlled and directed only by the self-leveling compensating mechanisms provided by the drive unit. In other words, in this embodiment, the cabin floats freely or almost freely downwards after passing through the ceiling opening, provided the shaft is open below the opening.

[0093] Advantageously, the height of the cabin housing is only a few centimeters lower than the height of the floor below, for example, by a maximum of three centimeters, and particularly advantageously by a maximum of 0.5 centimeters.

[0094] To ensure good stability and accuracy of the self-leveling mechanism, the aforementioned magnetic element is advantageously arranged on the shaft boundary element. For example, the lift device could have at least one rail with magnetic coils mounted on a building wall, or the aforementioned support structure with magnetic coils. The magnetic fields generated by the magnetic coils then control and stabilize the cabin, holding it in the desired position. The coils are preferably arranged along the vertical travel path and in close proximity to the cabin. Direct contact with the cabin is not required, unlike with conventional guide rails.

[0095] Regardless of or in conjunction with this, the at least one magnetic element can also be located in the cabin area and / or in the suspension area and / or on the floor of the lower level. For example, the magnetic element can be placed on the cabin and in an area of ​​the support rollers and / or in the area of ​​the winding rollers.

[0096] The position sensors can be located, for example, in the area of ​​the cabin and / or in the area of ​​the suspension and / or in the area of ​​the shaft boundary element and / or on the floor of the lower access point.

[0097] In the method for transporting a load according to the present invention, a cabin designed to accommodate a person and / or an animal is moved over a conveying height of up to three meters between an upper access point and a lower access point located vertically below it. The cabin is moved by means of a drive device with at least two drive units arranged parallel to each other. To move the cabin, the drive units each wind a support belt attached to the cabin onto or off a motor-driven winding roller. Starting from an end stop similar to a pulley system, the support belts run over at least one support roller, arranged below the end stop and designed to carry the cabin, and over at least one deflection roller, fixed between the winding roller and the support roller, to the winding roller.The support belts are all flat belts, and the force is transferred from the winding rollers to the flat belts via frictional engagement. The drive units apply the force required to move the cabin directly and perpendicularly to the cabin.

[0098] The movement of the cabin, particularly on the upper floor, can be guided and controlled by means of at least one vertically extending shaft boundary element.

[0099] Advantageously, at least on the lower level, the cabin is kept in a horizontal and balanced position by self-leveling during its vertical movement. This is achieved by continuously monitoring the cabin's current position and orientation with at least one position sensor, evaluating the data acquired by the position sensor, and, if a deviation of the cabin's position from at least one predefined value is detected, electronic and / or mechanical and / or hydraulic compensatory measures are taken to keep the cabin in a horizontal and balanced position and to counteract horizontal deflections, i.e., pendulum movements, of the cabin.

[0100] Magnetic forces can be used as compensating measures. Furthermore, as a compensating measure, the movement of the flat belts can be controlled using at least two mechanically independent motors, thereby aligning and leveling the cabin accordingly. Independently of this, or in conjunction with it, the load of the cabin can be distributed evenly across the flat belts using at least one compensating rocker or roller.

[0101] The present invention provides a lift device that is particularly easy and inexpensive to manufacture and can be retrofitted into a building in a simple and cost-effective manner. Installation of the present lift device requires only the following steps: - Providing an opening in a ceiling located between the two floors, if no opening already exists, - Installing a suspension system, preferably self-leveling, on the upper floor, - Attaching the drive device with double pulley and flat belt - Possibly installing position sensors, a control unit and / or a compensation device. - Attaching the cabin to the suspension.

[0102] Optionally, at least one supporting structure and / or at least one shaft boundary element can be installed; for example, at least one conventional guide element, such as a guide rail, can be arranged in the ceiling opening.

[0103] The drive unit can be designed to level the cabin using a motor, at least two flat belts, and a compensating device located at the end stop of the flat belts that utilizes leverage. Alternatively, the drive unit can move the cabin vibration-free, for example, using four motors or drive elements. Additionally, the cabin can be centered by contact with a wall of the building. At least one rail, at least one belt, and / or at least one magnetic strip can be attached to the wall to further support the guidance.

[0104] Independently of or in connection with the aforementioned features, a further aspect of the invention is a lift device for a building with an upper floor and a lower floor below, wherein the lift device comprises - a cabin designed to carry a person, an animal and / or a load and - a lift unit designed to move the cabin vertically between the upper floor and the lower floor below, the lift unit comprising, -- at least one lifting device attached to the cabin, -- a suspension system by means of which the load-bearing element is suspended on the upper floor, and -- at least one drive element, wherein the drive element is designed to drive the lifting element and thus move the cabin, characterized by, - at least one tilt sensor for continuously recording tilt data, which reflects the current position and orientation of the cabin, and - at least one control unit designed to -- to compare the inclination data recorded by the tilt sensor with defined target values, -- to provide at least one control signal when at least one defined setpoint is exceeded and -- to supply the elevator unit with the control signal, wherein the elevator unit is designed to provide self-leveling electronic and / or mechanical and / or hydraulic compensating measures depending on the detected control signal in order to keep the cabin in a horizontal and balanced position and to avoid horizontal deflections, i.e. pendulum movements, of the cabin.

[0105] Finally, the present invention relates to the use of at least one lifting device of the type described above for transporting people, animals or loads between the different floors of a private building or between different levels of a structure, in particular as a passenger lift, for a private household, for example for barrier-free use of a private house or a private garden for persons with reduced mobility.

[0106] The present invention, due to its flat belt drive with pulley system and optional sensor-controlled stabilization, allows for increased clearance in the shaft area, enabling flexible room layouts. Furthermore, the invention facilitates smoother and more stable cabin movement through precise leveling measures and / or sensor technology. Continuous stabilization of the cabin's positioning also enhances the safety of the lift system. Additionally, sensor-based leveling allows for the partial or even complete elimination of traditional guide rails. This provides extra space for access points and opens up various possibilities for entering and exiting the cabin. For example, access points to the cabin can be provided on two, three, or even four different sides of the shaft. Brief description of the drawings

[0107] As discussed above, there are various ways to advantageously elaborate and further develop the teaching of the present invention. For this purpose, reference is made, on the one hand, to the claims subordinate to claim 1 and claim 10; on the other hand, further embodiments, features, and advantages of the present invention are described below, inter alia, with reference to the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 to Fig. 10 illustrated three examples of implementation and explained them in more detail.

[0108] It shows: Fig. 1 in schematic representation a first embodiment of a lift device according to the present invention, which operates according to the method according to the present description; Fig. 2 in schematic representation a first embodiment for a drive device of the lift device made of Fig. 1; Fig. 3 a detailed view of the drive unit of the drive device Fig. 2; Fig. 4 in schematic representation the drive unit of the drive device of the lift device Fig. 1; Fig. Figure 5 shows a schematic representation of a second embodiment of a drive device for the lift device. Fig. 1; Fig. 6A a detailed view of the frame ceiling of the supporting structure of the lift device Fig. 1 in assembled state; Fig. 6B the frame ceiling made of Fig. 6A in exploded view; Fig. 7 in schematic representation a second embodiment of a lifting device according to the present invention, which operates according to the method according to the present description; Fig. 8 The lifting device made of Fig. 7, wherein the cabin is located between the upper and lower floors; Fig. 9 in schematic representation a third embodiment of a lifting device according to the present invention, which operates according to the method according to the present description; Fig. 10 in schematic representation a fourth embodiment of a lift device according to the present invention, which operates according to the method according to the present description.

[0109] Identical or similar designs, elements, or features are found in the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 to Fig. 10 with identical reference symbols. Best way to implement the invention

[0110] To avoid unnecessary repetition, the following explanations regarding the embodiments, features and advantages of the present invention (unless otherwise stated) refer both to the aspects described in Fig. 1 first lifting device 100 as well as on the one shown in Fig. 8 shown second lifting device 102 as well as on the in Fig. 9 shown third lifting device 104 as well as on the in Fig. 10 fourth lift device shown 106

[0111] Fig. Figure 1 shows a first embodiment of a lift device designed for subsequent installation in a house, namely a house lift 100. To save space, the mechanism is located on top of the house lift 106 instead of on the side, as is usual. Up and down travel is achieved with a double rope drive with a pulley system and reinforced flat belts, as well as a compensating device 92, 92', which distributes the load evenly. A first embodiment of the compensating device 92 is shown in Fig. 3 shown and a second embodiment of the compensating device 92' is shown in Fig. 5 shown. As in Fig. As shown in Figure 1, the cabin 10 can be centrally attached to the support rollers 62 of the pulley system. An eccentric attachment of the support rollers 62 to the cabin 10 is shown in the Fig. 7, Fig. 9 and Fig. 10 shown. The drive unit 21 is in the Fig. 2, Fig. 3 and Fig. 4 shown in more detail.

[0112] A drive motor 90, in particular an asynchronous motor, of the drive system comprises a double brake 91 and a gearbox 97, in particular a bevel gear gearbox. A drive shaft 89, which is coupled to two winding rollers 60, winds an associated flat belt 22.

[0113] The flat belts 22 are each attached to one of the winding rollers 60 and are driven by them. Starting from an end stop 86, the flat belts 22 are guided horizontally to a first deflection roller 64 and from there vertically to the associated support roller 62. After completing a circuit around the support roller, the flat belt is guided vertically to another deflection roller 65 and from there to the winding roller 60. By means of the deflection rollers 64 and 65, the flat belts 22 are kept continuously on the same plane around the associated support roller 62, which is attached to the cabin.

[0114] A simple pulley system allows the load to be halved, thus reducing the torque on the gearbox. The pulley system can also be configured as a multiple pulley system, featuring several pulleys arranged essentially vertically to achieve greater force savings.

[0115] A multi-part, for example two-part, engine mount 73 supports the weight of the drive unit, the cabin, and the passenger. The flat belt 22 is, as in Fig. 4 shown, installed and finally attached to the end stop 86 of a compensating device 92.

[0116] The motor suspension 73 is suspended from a frame ceiling 76 of a supporting structure, namely a support frame. The supporting structure is self-supporting, so no structural integration into a building is required. Apart from the frame ceiling 76, the supporting structure is frameless, so that access to the cabin 10 is possible from all four sides of the lift device. This means that on the load-bearing sides, the supporting structure has only support columns, but no frame connecting the support columns.

[0117] The compensating device 92 is in Fig. Figure 5 shows in more detail. This is a compensating rocker or balance with a deflection lever 94 pivotally mounted on a central pivot point 93. The deflection lever 94 comprises two lever arms extending from opposite sides of the pivot point 93. The flat belts 22 are coupled to the lever arms and to the motor 90. The deflection lever 94 is designed to pivot towards the heavier side when the load on the flat belts 22 is unevenly distributed. This adjusts the length of the lever arms on both sides and distributes the load of the cabin 10 evenly across the flat belts 22. In other words, the balance 29 is a solid strip 94 mounted in the middle to absorb minor deflections of one connected flat belt and transmit them to the other connected flat belt, thus ensuring an even load distribution on both sides.

[0118] A mechanical stop (not shown) halts the rotation of the deflection lever 94 after a defined change in angle relative to the vertical, for example, an angle change of 6 degrees. This serves as a safety feature and stops the rotation of the deflection lever 94 in the event of a flat belt breakage.

[0119] The compensating balance 92 is sensor-controlled. The drive device 88 comprises at least one load sensor 96 for detecting the load applied by the cabin 10 to the associated flat belts 22. The load sensor 96 comprises at least one rocker control element 98, for example, at least one swashplate, which receives the incoming forces and movements and transmits them to the compensating balance 92. The compensating balance 92 acts as a decoupling element that compensates for unevenness.

[0120] The rocker control elements 98 are thus designed to align the deflection lever 94 of the compensating balance in order to adjust the length of the lever arms on both sides and to distribute the load of the cabin 10 evenly onto the flat belts 22.

[0121] At the in Fig. In the embodiment shown in Figure 1, the lift device has a single drive with support rollers 62 centrally mounted on the cabin. Alternatively, as shown in Figure 1, the following configurations are possible: Fig. Figure 5 shows a multiple drive, such as a triple or quadruple drive, with several mechanically independent motors 90 and each with a compensating device or control 92' designed to regulate the speed of the associated motor, to distribute the load evenly onto the flat belts 22.

[0122] The lifting device 100, 102, 104, 106 can therefore comprise several drive devices 88, 88'. Fig. 2 and Fig. Figure 3 shows a drive device 88, which is designed according to a first embodiment and comprises two drive units 21 designed according to a first embodiment.

[0123] In Fig. Figure 5 shows a second embodiment of a drive device 88'. Specifically, the one shown in Fig. Figure 5 of the lift device comprises two drive devices 88', each drive device 88' comprising two drive units 21' arranged parallel to each other, each with a support belt 22 and a winding roller 60. The two drive devices 88' can again be arranged parallel to each other; for example, the drive units 21' can each be arranged above the corner regions of a rectangular cabin 10.

[0124] At the in Fig. In the embodiment shown in Figure 5, the drive devices 88' each have a mechanically independent drive motor 90 for a flat belt 22. This offers the advantage that the required torque can be distributed across several motors 90, allowing smaller motors to be more easily and modularly integrated into the lift device. The motors are operated via the control unit 92' so that the cabin 10 is always kept horizontal. The control unit 92' can utilize at least one load sensor 96 and / or at least one position sensor 30 or tilt sensor. Furthermore, the control unit 92' can act as a speed control unit and regulate the speed of the winding rollers 60 depending on their diameter. Preferably, in the case of multiple drives, the load is picked up and transferred directly at the corners or on a frame of the cabin 10 by eccentrically mounting the support rollers 62 on the cabin ceiling.This reduces the load on the cabin ceiling and thus makes it possible to design the cabin ceiling more lightly in order to reduce the weight of the cabin (see . Fig. 6, Fig. 9 and Fig. 10).

[0125] The 106 home lift stands out significantly from conventional lift systems. It is a modular system that can be individually adapted to the specific conditions on site and allows for straightforward retrofitting in the future. This 106 home lift offers lifting heights over just two stops and a drop height of less than three meters. The cable drive is powered by a flat belt, for example, 4 mm wide, which is an efficient and space-saving solution.

[0126] The operation of the conveyor platform is designed to be particularly user-friendly: For people with disabilities, the button layout can be individually adjusted. Alternatively, instead of conventional buttons, there is the option of implementing personalized control, for example via voice commands.

[0127] Another advantage of the system is its easy transport and straightforward assembly, as only a few components are required. The short delivery times result from the fact that many components are identical for different platform sizes and can be retrieved directly from stock.

[0128] The lift system is self-contained and requires no extensive structural integration into the building; only adjustment is necessary. The supporting structure of the 106 home lift consists of easily connected standard components (see [reference]). Fig. 6A and Fig. 6B), and the level entry and exit ensures barrier-free use.

[0129] In the Fig. 7 and Fig. In the house lift 102 shown in Figure 8, the shaft on the lower floor is completely open. This improves the visual aesthetics of the house lift 102 within the building and opens up new architectural possibilities. The cabin 10 is guided downwards on four flat belts 22 and aligned by means of position sensors 30 and actuator elements, such as electric coils 50 or motor-driven support rollers 62.

[0130] The flat belts 22 can, for example, have a width of approximately 30 mm or approximately 40 mm.

[0131] To assist in guiding cabin 10, the house lift may also additionally have at least one conventional guide element, for example at least one guide rail (not shown).

[0132] The four flat belts 22 support the cabin 10 from above and are responsible for its vertical movement. Each flat belt 22 is driven by a motor. The flat belts are each attached to a corner of the cabin roof. Furthermore, the house lift 100 has a safety cable (not shown) located centrally on the roof of the cabin 10.

[0133] Cabin 10 has a solid, stable housing, preferably of a self-contained design. The cabin's depth can be variable, meaning that the cabin platform can be scaled to any desired dimensions in length and width. For this purpose, the cabin is preferably of a modular design.

[0134] The flat belts 22 are assigned to a suspension 20, which suspends the cabin 10 from a support frame or from the ceiling 210 of the upper floor.

[0135] The 102 home lift can be fully or partially battery-operated.

[0136] On the upper floor, the elevator shaft is enclosed. The shaft opening is clad on all sides to match the furnishings. To allow access to cabin 10, the shaft on the upper floor has a secured door 74. Typically, the elevator 102 is located in a corner of the floor, so that installing the enclosed shaft requires only one wall element and the wall element with the door 74.

[0137] The special innovation of the in the Fig. 6 and Fig. In the embodiment of the present invention shown in Figure 7, the cabin 10 does not require a conventional guide but is essentially positioned and held in the correct orientation by the drive unit. This is achieved by incorporating position sensors 30 that continuously monitor the horizontal and vertical alignment of the cabin during its movement. In the event of deviations from the target position, these sensors send signals to actuator elements, which can be designed as electrical coils 50 and / or motor-driven support rollers 62 or as winding rollers 60. These elements actively correct any tilting or displacement by acting against the flat belts 22 or by controlling the drive of the flat belts 22 accordingly, thus repositioning the cabin 10 without requiring physical contact with a shaft structure surrounding the cabin 10 or with the ground.

[0138] For this purpose, the house lift 102 includes at least one control unit 40 which is designed to - to compare position data recorded by the 30 position sensors with defined target values, - to provide at least one control signal when at least one defined setpoint is exceeded and - to apply the control signal to the drive unit.

[0139] Normally, the lift always parks at the top in the cabin; only when needed is it moved down using modern controls such as mobile phone, voice, eyes, etc., and then brings cabin 10 up.

[0140] The shaft space on the lower floor is completely accessible. Optionally, the position sensors 30 and / or the electrical coils 50 can be arranged on the floor. For example, the position sensors and / or the electrical coils 50 can be designed as four small, usually round, points and arranged flush with the floor, approximately 30-40 mm below the surface, to receive and / or process the signals.

[0141] Preferably, all technical elements of the drive unit located on the lower floor are powered purely by battery.

[0142] In the Fig. 9 and Fig. Figure 10 shows a custom-designed animal elevator that transports animals safely and comfortably up or down a building.

[0143] Two different embodiments of a corner cable guide are shown as suspension 20', 20". In this option, flat belts 22 are guided from the corners of the cabin 10 to the center.

[0144] The cabin 10 is aligned with the help of four small motorized support rollers 62 and with a leveling plate 80 (see Fig. 3) or without a leveling plate 80 (see Fig. 4) moved horizontally and smoothly over a conveying height of up to three meters.

[0145] To secure the animals, the cabin has 10 sturdy side walls, which, for example, are approximately 1.0 m high and can be made of wooden planks. Alternatively, the cabin can also be a floor-to-ceiling box, such as an animal transport container (not shown).

[0146] Cabin 10 may include a structure of barriers, grids or doors at the front and rear, which makes it possible to transport the animals safely and to support a "flow rhythm".

[0147] To make cabin 10 particularly robust, it can have a steel base plate with a thickness of, for example, 30 mm. The base plate 12 can be perforated for dirt and debris.

[0148] Furthermore, cabin 10 has a cover plate 14, which is less solid than the base plate, but has a reinforced edge.

[0149] Flexible connecting elements 16, so-called flexo parts, serve as vertical connections with an integrated steel cable that provides tensile strength.

[0150] A grating on the floor of cabin 10 facilitates cleaning and allows dirt to fall through. Furthermore, the spaces in the grating can be used to attach connecting elements 16. These connecting elements or supports 16 are designed to firmly hold the lower plate (base plate 12) to the upper plate (cover plate 14) of the cabin.

[0151] The cabin is controlled via a leveling system, with additional guidance provided at the ceiling end by a concrete wall. Guidance is primarily achieved using position sensors (30), but can also be supplemented by ball bearings, guide rails, magnetic strips, etc.

[0152] The dimensions of the lift are chosen to make it well-suited for transporting animals. For example, the floor height on the upper level can be 3.50 m and on the lower level 3.00 m. The depth T of the cabin can be, for example, 130 cm and the length L of the cabin 210 cm.

[0153] As in the Fig. 9 and Fig. As shown in Figure 10, the cabin 10 can slide along a wall and can additionally have at least one guide element, such as at least one guide rail or at least one thin, narrow magnetic strip, arranged on the wall. The magnetic strip can have the electrical coils 50 and, for example, enable stabilization similar to a magnetic track.

[0154] Additional sensors monitor whether the area below the cabin is free of animals or objects.

[0155] In addition, all components comply with existing safety standards and regulations, in particular with the EN 81-41 standard described in the publication SN EN 81-41.2010 by the Swiss Society of Engineers and Architects Zurich. The home lift is easy to operate and can be controlled, for example, via radio or a smartphone. REFERENCE MARK LIST 10 Cabins for accommodating at least one person and / or at least one animal 12 Base plate or floor of the cabin 10 14 Roof or deck surface, in particular deck plate, of the cabin 10 16 Connecting element for connecting the base plate 12 or the cabin floor to the cover plate 14 or the cabin roof 19 Mounting device of the cabin 10 for attaching the support roller 62 20 Suspension of cabin 10, namely flat belt suspension with centric or eccentric attachment of the support rollers 62 to cabin 10 21 Drive unit with flat belt 22 and winding roller 60 (first embodiment; see also Fig. 2 and Fig. 3) 21' Drive unit with flat belt 22 and winding roller 60 (second embodiment, see below) Fig. 5) 22 Flat belts, for example reinforced flat belts, in particular made of polymer with steel strand reinforcement 30 Position sensors for continuously recording the current position and orientation of the cabin 40 Control unit that can be supplied with the data acquired by the load sensor 96 and / or the position sensor, compares the data acquired by the load sensor 96 and / or position sensor 30 with defined setpoints and provides at least one control signal if at least one defined setpoint is exceeded 50 Magnetic element, in particular electrical coil 60 winding roller or drive roller or drive wheel 62 Carrying roller 64 Deflection pulley, in particular first deflection pulley 65 more pulleys 69 Supporting structure 70 Element of a cladding or of the supporting structure 69, in particular at least one wall element and / or at least one guide rail and / or element of a frame and / or a scaffold 71 vertical handrail of the cabin 72 further element of a cladding or of the supporting structure 69, in particular at least one further wall element and / or at least one further guide rail and / or one further element of the frame and / or scaffold 70 73 Drive mounting, in particular engine mounting 74 Door of a closed panel at the upper access point 76 Frame ceiling of the supporting structure 78 Suspension brackets of the frame ceiling 76 79 additional suspension beams of the frame ceiling 76 80 leveling plate, for example hydraulic leveling plate 86 End stop 88 Drive device first embodiment (see Fig. 2 and Fig. 3) 88' Drive device second embodiment (see Fig. 5) 89 Drive shaft 90 Drive motor or motor, in particular asynchronous motor, such as an electric motor 91 Brake, in particular dual engine brake 92 Compensating device, in particular compensating balance, compensating rocker or compensating roller, first embodiment (see Fig. 3) 92' Compensating device, in particular motor control element for controlling the speed of the motors 90, second embodiment (see Fig. 5) 93 central pivot point of the seesaw 94 Deflection lever, in particular solid strip or solid web or beam, of the compensating device, such as rocker beam 96 Load sensor 97 gearboxes 98 Rocker control element, in particular swashplate 100 Lifting device, in particular vertical lift, which serves for the up and down transport of persons, animals or loads (first embodiment; cf. Fig. 1) 102 Lifting device, in particular vertical lift, which serves for the up and down transport of persons, animals or loads (second embodiment; cf. Fig. 7 and Fig. 8) 104 Lifting device, in particular vertical lift, which serves for the up and down transport of persons, animals or loads (third embodiment; cf. Fig. 9) 106 Lifting device, in particular vertical lift, which serves for the up and down transport of persons, animals or loads (fourth embodiment; cf. Fig. 10) 210 Ceiling of the upper floor; the upper floor ceiling forms the upper boundary of the upper floor 220 Floor of the upper story; it forms the lower boundary of the upper story 230 Floor of the lower story; it forms the lower boundary of the lower story T Depth of the cabin L length of the cabin 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] EP 2 356 056 B1 [0008, 0009] KR 100821640B1

[0010] DE 10 2019 115 025 A1

[0011] Cited non-patent literature

[0000] SN EN 81-41. 2010

[0155] Standard EN 81-41

[0155]

Claims

[1] Lifting device (100; 102; 104; 106; 106) designed to move at least one load vertically over a lifting height of up to three meters between an upper access point arranged at the head of the lifting device (100; 102; 104; 106; 106) and a lower access point located vertically below it, wherein the lifting device (100; 102; 104; 106) comprises a cabin (10) designed to accommodate at least one person and at least one drive device (88; 88') designed to move the cabin (10) with at least two drive units (21; 21') arranged parallel to each other, - wherein the drive units (21; 21') for moving the cabin (10) each comprise a support belt (22) designed as a flat belt and each comprise a motor-driven winding roller (60) designed for winding the support belt (22), - wherein the support belts (22) each run from an end stop (86) in the manner of a pulley system over at least one support roller (62) arranged below the end stop (86) and designed to support the cabin (10), and over at least one deflection roller (64) arranged stationary between the winding roller (60) and the support roller (62) to the winding roller (60), and wherein the support belts (22) interact with the winding roller (60) in a force-fit manner, - wherein the support rollers (62) are attached to a roof (14) of the cabin (10), - and wherein the drive units (21; 21') and the support rollers (62) are arranged in a vertical plane above the cabin (10), characterized by , that - the winding rollers (60) of at least two of the parallel drive units (21) are arranged together on a drive shaft (89) of a motor (90) designed to drive the drive units and - the parallel drive units (21) are each assigned at least one self-operating compensating device (92) designed in the form of a compensating rocker or a compensating roller, wherein the compensating device (92) uses lever forces to distribute the load of the cabin (10) evenly onto the flat belts (22). and / or that - the lifting device (100; 102; 104; 106) comprises at least two motors (90) designed to drive the drive units, each assigned to one of the winding rollers (60), and - the drive device (88') comprises at least one motor control element (92') designed to regulate the speed of the respective motors (90) in order to distribute the load of the cabin (90) evenly onto the flat belts (22) of the drive units. [2] Lifting device (100; 102; 104; 106) according to claim 1, characterized by, that the lifting device (100; 102; 104; 106) comprises three or four motors (90) designed to drive the drive units, each assigned to one of the winding rollers (60). [3] Lifting device (100; 102; 104; 106) according to claim 1 or 2, characterized by , that the flat belts (22) of the drive units (21; 21') can be wound onto the winding rollers (60) in a multi-layer winding with concentrically superimposed windings, and that the lifting device (100; 102; 104; 106) has at least one speed control unit which is designed to control the speed of the winding rollers (60) depending on the diameter of the winding rollers (60). [4] Lifting device (100; 102; 104; 106) according to at least one of claims 1 to 3, characterized by , that - that the lift device (100; 102; 104; 106) comprises at least one, in particular self-supporting, supporting structure, at least in the area of ​​the upper access point, with a frame ceiling (76) and with frame beams designed to support the frame ceiling (76), wherein the supporting structure laterally delimits a vertical space in which the cabin (10) moves and restricts the movement of the cabin (10) within the vertical space and - that the cabin (10) and the drive unit (21; 21') are suspended from the frame ceiling (76), the frame ceiling (76) being designed to distribute the load onto the frame girders. [5] Lifting device (100; 102; 104; 106) according to claim 4, characterized by, that the frame ceiling (76) comprises a circumferential frame and at least one suspension beam (78, 79) connecting opposite sides of the frame for suspending the cabin (10) and the drive unit (21; 21'), wherein the frame ceiling (76) is modular in design and the suspension beam (78, 79) can be attached at at least two different locations on the frame. [6] Lifting device (100; 102; 104; 106) according to claim 4 or 5, characterized by , that the supporting structure (70; 72) in the lower floor is designed to be so open that the supporting structure (70; 72) allows the cabin (10) to swing freely. [7] Lifting device (100; 102; 104; 106) according to at least one of claims 1 to 6, characterized by , that operating elements designed for the operation of the lift device (100; 102; 104; 106) are arranged on at least one vertical handrail (71) extending between the ceiling and floor of the cabin (10). [8] Lifting device (100; 102; 104; 106) according to at least one of claims 1 to 7, characterized by at least one position sensor (30) for continuously acquiring position data which reflects the current orientation and position of the cabin (10), and by at least one control unit (40) which is designed to - to compare the position data recorded by the position sensor (30) with defined target values, - to provide at least one control signal when at least one defined setpoint is exceeded and - to supply at least one electrical and / or magnetic coil (50) of the lift device (100; 102; 104; 106) with the control signal, wherein the electrical and / or magnetic coil (50) is designed to automatically generate a defined magnetic field, such as a defined electromagnetic field, depending on the detected position data, in order to align and level the cabin (10) and to counteract horizontal deflections, i.e. pendulum movements, of the cabin (10).

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