EP2694419A1

EP2694419A1 - Floor for an elevator car

Info

Publication number: EP2694419A1
Application number: EP12708865.6A
Authority: EP
Inventors: Beat BRÜGGER; Christoph Schuler; Lukas Zeder; Thomas WÜEST; Urs Schaffhauser; René STREBEL
Original assignee: Inventio AG
Current assignee: Inventio AG
Priority date: 2011-04-06
Filing date: 2012-03-16
Publication date: 2014-02-12
Anticipated expiration: 2032-03-16
Also published as: KR20140053877A; US9090434B2; CN103459293A; SG193231A1; HK1191920A1; WO2012136461A1; MX336007B; ES2586278T3; EP2694419B1; KR101914808B1; US20120255811A1; AU2012238984B2; CN103459293B; BR112013020826B1; MX2013011633A; AU2012238984A1; BR112013020826A2

Abstract

The invention relates to a floor for an elevator car, comprising a base plate (7), a cover plate (8), and a support structure (6) arranged therebetween. The support structure (6) comprises a first grating arrangement (10) made of a plurality of upright intersecting profiled sections (12, 13). For local reinforcement, the support structure (6) additionally comprises a centrally arranged second grating arrangement (11) that is superimposed on the first arrangement.

Description

Floor for an elevator car

The invention relates to a floor for an 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 cables or other suspension means. 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 has become known from EP 1 004 538 AI. The support structure arranged between two plates consists of a large number of intersecting flat profiles, which are referred to as lamellae in EP 1 004 538 A1. The longitudinal and transverse profiles are joined together via slots that are complementary to one another to form a grid 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 EP 566 424 AI a sandwich-type floor has become known, which comprises two superimposed and separated by an intermediate plate layers with 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 floor of the type mentioned above, which meets high demands in terms of stiffness and load capacity even under particularly high mechanical loads. The floor should continue to be easy and inexpensive to produce. According to the invention, these objects are achieved 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 AI 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 production of the elevator car floor and / or as part 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.

Another aspect of the invention relates to an elevator with an elevator car with the previously described floor.

If the elevator in the shaft bottom has a buffer element for catching the elevator car in an end position, it can be advantageous if the elevator car is so equipped. is designed such that 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 in the end position directly on the ground. 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.

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

Figure 1 is a perspective, highly simplified representation of an elevator with a

Elevator car,

FIG. 2 is a plan view of a support structure for a floor of an elevator car according to the invention;

Figure 3 is an exploded perspective view of an inventive

Floor for the elevator car

FIG. 4 shows the floor from FIG. 3 from a different angle,

FIG. 5 shows the floor according to FIG. 4 with a completely assembled supporting structure,

FIG. 6 is a detailed view of the support structure of FIGS. 5, and

Figure 7 is a perspective view of the basic structure of the support structure.

FIG. 1 shows a lift designated overall by 1 with a cab 3 fastened to support means 4. The shaft is shown as an indication and designated by 2. Such or similar elevators have been known and used for a long time. In the exemplary embodiment according to FIG. 1, a spring-mounted buffer element 9 for catching the car 3 in an end position is located on the shaft bottom. 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 in detail with reference to FIGS. 2 to 6.

FIG. 2 shows a plan view of a possible variant designated by 6 for a support structure according to the invention for the floor of the elevator car. 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, comprises approximately the entire floor surface, consists of a plurality 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 design details for this arrangement, reference is therefore made to EP 1 004 538 AI, which is hereby expressly applicable 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 can be clearly seen from the plan view according to FIG. 2, the support structure 6 has a second arrangement 11 arranged in the first arrangement 10 and overlapping the first arrangement 10 in an overlap region for forming the local reinforcement. Evidently, the support structure 6 has, outside the overlapping area, the first packing density specified only by the profiles 12, 13.

Design details for the construction of the cabin floor 5 according to the invention can be taken from the exemplary embodiment according to FIGS. 3 to 6. 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 Figure 4 lacks the cover plate for a better understanding of the floor structure. From Figure 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 (see FIG. 1: for example, 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. FIG. 5 shows, by way of example, a possible method for producing the floor. 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 set in the illustration according to Figure 5 from above to the first grate assembly 11. For an approximately precise connection of the two arrangements 10 and 11, in each case turned slots 16, 17 and 18, 19 provided.

The bottom 5, according to the present exemplary embodiment, has, as is apparent, 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 can be seen from the detailed illustration of the second grate assembly 11 according to FIG. 6, the slots 18, 19 run 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 side to about the middle of the profile 14, 15, whereby in the assembled state all profiles come to rest on the same level.

As can be seen from FIG. 7, the profiles of the second arrangement are respectively arranged between two profiles of the first arrangement. In FIG. 7, a profile adjacent to the profile 12 is designated by 12 '. Between the profiles 12 and 12 'which are spaced apart from one another at a distance a, the profile 14 of the second arrangement is located approximately in the center. 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 exemplary embodiment, the profiles of the second arrangement-in contrast to the preceding exemplary embodiment according to FIG. 6 -are assembled simultaneously with the respective identically oriented profiles of the first arrangement to form the support structure. The walls or wall segments formed by the second arrangement (represented in FIG. 7 by way of example by the profile 14) are connected in a form-fitting manner via the slots to the walls or wall segments of the first arrangement formed by the profiles 12 and 13. For fixing a support structure assembled from first and second arrangements, the second arrangement is advantageously welded to the first arrangement.

Claims

claims

1 . Floor for an elevator car with a flat underside (7) and arranged at a distance to the bottom flat top (8), wherein between the top and bottom of a support structure (6) containing a first arrangement (10) with respect to a plan view about uniformly distributed walls or wall segments, which provide a first packing density, is arranged, characterized in that the support structure (6) for locally reinforcing the soil arranged in the first arrangement (10) and the first arrangement in an overlapping region overlying second arrangement (11 ), wherein the support structure in the overlap region has a higher second packing density compared to the first packing density, and in that the support structure (6) has the first packing density at least in certain regions with respect to the plan view outside the overlap region.

2. Floor according to claim 1, characterized in that at least the first and preferably also the second arrangement (11) each consist of a plurality of upstanding, intersecting profiles (12, 13, 14, 15) in the form of a grating.

3. Floor according to claim 1 or 2, characterized in that depending on a profile

(11, 15) of the second arrangement is arranged between two adjacent profiles (12, 13) of the first arrangement.

4. Floor according to claim 2 or 3, characterized in that both the profiles (12, 13) of the first arrangement and the profiles (14, 15) of the second arrangement with crossing points associated slots (16, 17, 18, 19) for Recording of intersecting profiles are provided.

5. Floor according to one of claims 2 to 4, characterized in that the bottom has a width and a length and the profiles (14, 15) of the second arrangement extending in the profile longitudinal direction each less than half the width or length of the bottom ,

6. Floor according to one of claims 1 to 5, characterized in that the profiles (12, 13) of the first arrangement (10) and the profiles (14, 15) of the second arrangement, the same material thickness.

7. Floor according to one of claims 1 to 6, characterized in that the local reinforcement with respect to a plan view is arranged centrally in the bottom (5).

8. Elevator with an elevator car containing a bottom (5) according to one of claims 1 to 7.

9. Elevator according to claim 8, characterized in that the elevator (1) in

Manhole base has a buffer element (9) for collecting the elevator car (3) in an end position and that the elevator car is configured such that the local reinforcement is arranged in an overlapping region to the buffer element (9) and the buffer element (9) in the end position directly on the ground (5) is supported.