EP2694419B1 - Elevator - Google Patents

Description

The invention relates to an elevator with an elevator car and a floor for the elevator car according to the preamble of claim 1. Elevator cabs are installed, for example, in cabin frames which in turn are guided on rails mounted in elevator shafts and moved up and down by drive machines via wire ropes or other suspension means become. Rigid cabin floors can be constructed in composite or sandwich construction, which makes the floors highly static and dynamic and relatively lightweight. Such a "sandwich" bottom can essentially be made up of the following components: a first plate (base plate) for setting a lower side, a second plate (cover plate) spaced from the first plate, and a support structure arranged therebetween.

A genus comparable comparable soil is from the EP 1 004 538 A1 known. The support structure arranged between two plates consists of a multiplicity of intersecting flat profiles, which in the EP 1 004 538 A1 are referred to as lamellae. The longitudinal and transverse profiles are put together via mutually complementary slots to form a grid-like composite structure and then welded together. In practice, it has been shown that even this rigid ground is no longer sufficient, especially for applications with very high mechanical loads.

From the EP 566 424 A1 For example, a sandwich-type floor has been disclosed which comprises two superimposed layers separated by an intermediate plate and having a honeycomb structure. Each honeycomb layer has evenly distributed and identically formed honeycombs over the entire surface. The two honeycomb layers have different sized honeycombs. The superimposed in plan view honeycomb layers define a packing density, which remains unchanged over the entire floor surface.

It is therefore an object of the present invention to avoid the disadvantages of the known, and in particular to provide a lift with an elevator car and a floor for the elevator car of the type mentioned, the soil high demands for stiffness and under very high mechanical loads Resilience is sufficient. The floor should continue to be easy and inexpensive to produce be.

According to the invention, these objects are achieved with a lift with a floor having the features of claim 1. The flat underside for the floor can be formed by a metallic plate, for example made of steel. Approximately plane-parallel to this base plate, a second plate may be arranged to specify the flat top. Like the base plate, this cover plate can also be made of steel or another metallic material. Of course, it would also be conceivable to provide other materials or compositions for the mentioned plates. The plates for defining the bottom and top could, for example, be made of fiber-reinforced materials or layers laminated together. For stiffening the floor is located between the top and bottom of a generally having a first packing density support structure. The first packing density is predetermined by a first arrangement with approximately uniformly distributed walls or wall segments with respect to a plan view. The top view results from a view in the direction of the surface normal of a floor surface of the floor. When installed, the plan view is accordingly defined by a vertical direction or by the direction of travel of the car. For local reinforcement of the soil, the support structure in the reinforced area has a higher second packing density than the first packing density. To form this local reinforcement, the support structure has a second arrangement arranged in the first arrangement and overlapping the first arrangement in an overlapping region. Reinforced locally means that the support structure is not reinforced over the entire floor surface, but only in a portion of the floor area. In other words, the support structure, with respect to the plan view outside the overlap region, at least partially has the first packing density. The support structure could have a honeycomb structure (for example, a honeycomb structure). Conventional honeycomb structures are characterized by evenly distributed and similarly formed honeycomb. According to the present invention, the local reinforcement of the honeycomb structure can be provided by the structure comprising a zone (reinforced area) with smaller cells. The smaller cells could have the shape of a honeycomb in accordance with the first arrangement which predetermines the basic structure. Of course, the cells may have different shapes. The zones with the smaller cells are obviously distinguished from the zone with the first packing density by a higher packing density. By the inventive local reinforcement of the cabin floor can be high For example, optimizing impact energies on the bottom of the soil.

The floor may have a support structure forming a layer or sandwich layer. The first arrangement and the second arrangement would then be arranged in the same layer or sandwich layer. Of course, a floor with several support structure layers would be conceivable.

The support structure can have walls or wall segments extending from the underside to the top or bridging the distance between the top and bottom and associated with the first arrangement and the second arrangement. The walls or wall segments may be made of the same material as the base plate and cover plate. Of course, other materials for the support structure would be conceivable. Incidentally, for certain applications, it would also be conceivable to dispense with a base plate. In this variant, the underside of the floor would be predetermined by the support structure.

According to the invention, the support structure has a first arrangement with walls or wall segments which are distributed approximately uniformly over the bottom surface and define the first packing density. The support structure further comprises a second arrangement for local reinforcement overlying the first arrangement. The second arrangement may be a separate component (or group of components) from the first arrangement, which is placed in or on the first arrangement and optionally connected to this, for example by welding. This floor version can be produced very easily and in a few steps.

The walls or wall segments of the second arrangement may, for example, be positively and / or materially connected to the walls or wall segments of the first arrangement. Thus, for fixing a support structure assembled from first and second arrangements, the second arrangement can be welded to the first arrangement.

The initially mentioned first arrangement with the first packing density can consist of a multiplicity of upright standing, intersecting profiles which form a type of grate. A simple floor with such a grate configuration is shown in FIG EP 1 004 538 A1 described. In addition to the first grate assembly, the support structure may include a second grate assembly or even multiple second grate assemblies. In the latter case, the individual second grid arrangements can be distributed evenly or unevenly over the bottom surface. As a result of the superposition of the first grid by a second grid, a structure with a second packing density, which is higher than the first packing density of the basic structure, is produced in the overlapping or overlapping area. This can be achieved in a particularly simple manner excellent values in terms of mechanical strength and stiffness. In particular, this local reinforcement makes it easy to avoid undesired deformations of the soil after a collision with a buffer or other object arranged at the bottom of the shaft.

It can be advantageous if each profile of the second arrangement is arranged between two adjacent profiles of the first arrangement. It is also conceivable, however, that in each case two or more profiles of the second arrangement are arranged between two adjacent profiles of the first arrangement.

In terms of manufacturing technology, it can be advantageous if both the profiles of the first arrangement and the profiles of the second arrangement are provided with slots assigned to crossing points for receiving intersecting profiles. The intersecting profiles of the first arrangement and the intersecting profiles of the second arrangement each have mutually facing slots. For joining the first arrangement and the second arrangement, the respective profiles may be provided with further slots. For this purpose, the already assembled longitudinal and transverse profiles of the first arrangement in the same direction aligned slots for receiving the assembled longitudinal and transverse profiles of the second arrangement, which in turn contain corresponding slots, which are grouped aligned in the same direction. The second grid (composite second arrangement) can thus be connected in a single step, especially by placing it from one side with the first grid (composite second arrangement). The two grating arrangements, ie, the first and the second arrangement, can advantageously be designed in each case before assembly as rigid assemblies. For example, the assemblies designed as rigid assemblies can be welded together by welding, Gluing or other methods in the cross position fixed profiles

For a floor having a certain width and length, it may be advantageous if the profiles of the second arrangement extend in the profile longitudinal direction each less than half the width or length of the floor. This embodiment would be particularly advantageous for about two centrally positioned in the ground second arrangements. Of course, other dimensions could be advantageous for the profile lengths of the second arrangement.

It can advantageously be further if the profiles of the first arrangement and the profiles of the second arrangement have the same material thickness. In this way, manufacturing costs and costs can be further reduced.

For certain applications, it may be advantageous if the local reinforcement is arranged centrally in the ground with respect to a plan view.

The intersecting profiles of the first and second assemblies can form chambers which can be partially or completely filled with a suitable filling compound for weighting and balancing the cabin. As filling material, the most diverse materials can be used, which are suitable to complain the elevator car. Thus, cement, building rubble, stones, liquids, oils, metal and especially lead body, etc. are conceivable. In this case, the filling compound in an embedding mass, such as a silicone, a gel, rubber, cement, plastic, etc., be embedded. Thus, for example, unwanted movements of the filling compound can be prevented. During the production of the elevator car floor, during the assembly of the elevator installation and / or within the framework of the maintenance of the elevator installation, the filling compound can be filled into at least one of the chambers of the support structure of the cabin floor or if necessary also removed or emptied.

The elevator has in the shaft bottom a buffer element for collecting the elevator car in an end position. The elevator car is designed in such a way the local reinforcement is arranged in a region overlapping with respect to a plan view to the buffer element and the buffer element is supported directly on the ground in the end position. In contrast to conventional elevators, in which the support via a bottom side of the cabin associated horizontally extending frame profile takes place, the present embodiment has some significant advantages. In addition to the considerable weight savings, it is also possible to achieve less massive and therefore leaner cabin designs.

Figur 1

eine perspektivische, stark vereinfachte Darstellung eines Aufzugs mit einer Aufzugskabine,

Figur 2

eine Draufsicht auf eine Stützstruktur für einen erfindungsgemässen Boden einer Aufzugskabine,

Figur 3

eine perspektivische Explosionsdarstellung auf einen erfindungsgemässen Boden für die Aufzugskabine

Figur 4

der Boden aus Figur 3 aus einem anderen Blickwinkel,

Figur 5

der Boden gemäss Figur 4 mit einer fertig zusammengesetzten Stützstruktur,

Figur 6

eine Detailansicht auf die Stützstruktur aus Figur 5, und

Figur 7

eine perspektivische Darstellung zum prinzipiellen Aufbau der Stützstruktur.

Further individual features and advantages of the invention will become apparent from the following description of exemplary embodiments and from the drawings. Show it:

FIG. 1

a perspective, highly simplified representation of an elevator with an elevator car,

FIG. 2

a top view of a support structure for a floor according to the invention an elevator car,

FIG. 3

an exploded perspective view of an inventive floor for the elevator car

FIG. 4

the ground out FIG. 3 from a different angle,

FIG. 5

the soil according to FIG. 4 with a fully assembled support structure,

FIG. 6

a detailed view of the support structure FIG. 5 , and

FIG. 7

a perspective view of the basic structure of the support structure.

FIG. 1 shows a generally designated 1 elevator with a mounted on support means 4 cab 3. The shaft is shown by way of suggestion and designated 2. Such or similar elevators have been known and used for a long time. In the embodiment according to FIG. 1 is located at the bottom of the shaft a spring-mounted buffer element 9 for collecting the car 3 in an end position. The buffer element 9 is located approximately centrally below a bottom 5 of the car 3. The bottom 5 is such stated that the buffer element 9 can directly or directly supported on the ground. To absorb an impact on the buffer of the bottom 5 is additionally reinforced in the middle. This reinforcement is described below with reference to FIGS. 2 to 6 described in detail.

In FIG. 2 is a designated 6 possible variant of an inventive support structure for the bottom of the elevator car in plan view. The support structure essentially consists of two grid-like arrangements 10 and 11. The first arrangement 10, which defines a type of basic structure which, viewed in plan view, covers approximately the entire floor surface, consists of a multiplicity of parallel longitudinal profiles 12 and transverse profiles 13 substantially uniformly distributed longitudinal and transverse profiles 12 and 13 are arranged at right angles crossing each other and define a first packing density. In this application, the term "packing density" is understood as meaning the ratio of the volumes of the individual chambers or cells formed by walls or wall segments to a total volume (corresponding in the present exemplary embodiment essentially to the entire volume of the support structure). Since the walls or wall segments are vertical to the ground level, the packing density can be read from the area ratio. The support structure 6 has, by way of example, thirteen longitudinal profiles 12 and eighteen transverse profiles 13, the respective distances between the profiles being the same. The first arrangement 10 by itself is almost identical to the already known from the prior art composite structure core configured with the grating arrangement. With regard to further constructive details for this arrangement is therefore on the EP 1 004 538 A1 which is hereby expressly included as part of the disclosure of this application. The second arrangement 11 is fundamentally approximately the same as the first arrangement 10 and differs from the first arrangement 10 essentially only by the apparent smaller outer mass and consequently lower number of profiles.

The longitudinal and transverse profiles 12 and 13 of the first arrangement form a plurality of checkerboard distributed chambers. The profiles 14 and 15 (four longitudinal profiles 14, five transverse profiles 15) crossing each other at right angles divide the chambers assigned to the first arrangement with the profiles 12, 13 into four chambers of equal size. By the Overlaying the first grid arrangement 10 with the second grid arrangement 11 thus results in a quadrupling of the packing density. The strength of the profiles for the support structure and the profile distances and thus the packing densities are particularly dependent on the floor load, the cover plate thickness and overall height and can be optimized for example by means of FEM calculations.

As seen from the top view Fig. 2 is clearly visible, the support structure 6 for forming the local reinforcement on a arranged in the first arrangement 10 and the first arrangement 10 in an overlap region overlying second assembly 11. Evidently, the support structure 6 has, outside the overlapping area, the first packing density specified only by the profiles 12, 13.

Constructive details of the structure of the inventive cabin floor 5 are from the embodiment according to the FIGS. 3 to 6 removable. The bottom 5 comprises a bottom plate 7, a cover plate 8 and a support structure 6 arranged therebetween and provided with a plurality of chambers. Laterally, the bottom is closed with longitudinal and transverse side parts 20 and 21. In FIG. 4 missing for a better understanding of the floor structure, the cover plate. Out FIG. 4 the centrally located locally reinforced zone with four times the packing density is particularly well visible. The somewhat double grid forming arrangement 11 has a square shape in plan view. The outer dimensions of the second arrangement 11 can be adapted, for example, to the size of a component acting on the floor (cf. Fig. 1 : eg buffer element). The second arrangement could also have a rectangle in plan view with the same aspect ratios as the floor as a whole.

The components 6, 7 and 8 and 20 and 21 are made of sheet steel, for example, and can be manufactured by means of cutting, bending and welding methods and connected to each other. Out FIG. 5 As an example, a possible method for producing the soil. The assembled into gratings profiles for the first and second assembly 10 and 11 are fixed, for example by welding and so rigidly connected. The second grate assembly 11 is shown in the illustration FIG. 5 set from above on the first grid assembly 11. For an approximately accurate connection of the two assemblies 10 and 11 are each facing each other Slots 16, 17 and 18, 19 are provided.

The bottom 5, according to the present embodiment, has evidently a single-layer support structure 6. The second arrangement 11 is arranged in the first arrangement 10 and thus in the same position. Instead of a single layer or sandwich layer with first arrangement 10 and the second arrangement 11, depending on the intended use, a floor with such a plurality of support structure layers would be conceivable.

As is apparent from the detailed representation of the second grate assembly 11 according to FIG. 6 can be seen, the slots 18,19 extend approximately at right angles to a ground plane or to the profile longitudinal direction. The slots 18,19 extend from a bottom-side profile end to about the middle of the profile 14, 15, whereby in the assembled state all profiles come to rest on the same level.

How out FIG. 7 shows, in each case the profiles of the second arrangement between two profiles of the first arrangement are arranged. In FIG. 7 is a profile adjacent to the profile 12 is denoted by 12 '. Between the spaced at a distance a from each other profiles 12 and 12 'is approximately centrally the profile 14 of the second arrangement. The central positioning and alignment is indicated by a distance a / 2. The profile distance a can be between 5 cm and 20 cm and preferably between 10 cm and 15 cm. In the present embodiment, the profiles of the second arrangement - in contrast to the previous embodiment according to FIG. 6 - Joined together with the respective identically oriented profiles of the first arrangement to the support structure simultaneously. The walls or wall segments formed by the second arrangement (in FIG Fig. 7 exemplified by the profile 14) are positively connected via the slots with the walls or wall segments formed by the profiles 12 and 13 of the first arrangement. For fixing a support structure assembled from first and second arrangements, the second arrangement is advantageously welded to the first arrangement.

Claims (7)

1. Lift with a lift cage (3) including a floor (5) and a buffer element (9) for catching the lift cage (3) in an end position in the shaft base, wherein the floor (5) has a flat lower side (7) and a flat upper side (8) arranged at a spacing from the lower side, wherein arranged between the upper side and the lower side is a support structure (6) having a first arrangement (10) with walls or wall segments which are approximately uniformly distributed with respect to a plan view and which predetermine a first packing density, characterised in that the support structure (6) has for local reinforcement of the floor a second arrangement (11) which is disposed in the first arrangement (10) and is superimposed on the first arrangement in a region of overlap, wherein the support structure in the region of overlap has a second packing density which is higher by comparison with the first packing density, that with respect to the plan view the support structure (6) has outside the region of overlap the first packing density at least in a region and that the lift cage is so formed that the local reinforcement is arranged in a region of overlap with respect to the buffer element (9) and the buffer element (9) in the end position is supported directly on the floor (5).
2. Lift according to claim 1, characterised in that at least the first arrangement and preferably equally the second arrangement (11) each consist of an intersecting profile members (12, 13, 14, 15) which stand on edge, in the form of a grating.
3. Lift according to claim 1 or 2, characterised in that each profile member (11, 15) of the second arrangement is disposed between each two adjacent profile members (12, 13) of the first arrangement.
4. Lift according to claim 2 or 3, characterised in that not only the profile members (12, 13) of the first arrangement, but also the profile members (14, 15) of the second arrangement are provided with slots (16, 17, 18, 19), which are associated with intersection points, for reception of intersecting profile members.
5. Lift according to any one of claims 2 to 4, characterised in that the floor has a width and a length and the profile members (14, 15) of the second arrangement respectively extend in profile length direction less than half the width or length of the floor.
6. Lift according to any one of claims 1 to 5, characterised in that the profile members (12, 13) of the first arrangement (10) and the profile members (14, 15) of the second arrangement have the
7. Lift according to any one of claims 1 to 6, characterised in that the local reinforcement is arranged centrally in the floor (5) with respect to a plan view.

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