Car floor of an elevator car and method for assembling an elevator car

Abstract

A car floor (3) for an elevator car (2) comprises a flat base part (4) and assembly feet (5) arranged thereon. In the assembly phase, the car floor (3) is supported on a shaft bottom (7) of an elevator shaft (6) by means of the assembly feet (5). In order to align the base part (4) into a horizontal position, each assembly foot (5) is designed as a height-adjustable assembly foot. Here, the height-adjustable assembly foot (5) has a threaded rod (11) for forming a spindle (10) for height adjustment.

Description

TECHNICAL FIELD

[0001] The invention relates to a car floor for an elevator car and to a method for assembling an elevator car. BACKGROUND

[0002] Elevator installations for transporting persons and goods comprise an elevator car which can be moved up and down in an elevator shaft. The elevator car can be moved by means of a drive unit by means of a hoisting appliance in the form of a load-bearing rope or load-bearing belt. In self-supporting elevator cars, a car frame is not required. In order to assemble such an elevator car, a car floor is brought into the pit of the shaft. Thereafter, in order to complete the elevator car, car side walls and a ceiling can be assembled. It frequently occurs that the shaft bottom is not completely level. It is therefore necessary to compensate for such unevenness of the floor or to level the car floor for other reasons. SUMMARY

[0003] It is an object of the invention to avoid the known disadvantages and in particular to propose a car floor by means of which the car floor can be leveled in a simple and efficient manner.

[0004] According to the invention, this object and others are achieved by a car floor having the features of claim 1. The car floor for an elevator car comprises a preferably flat base part for predefining a footwell area for passengers in the interior space of the elevator car. By means of arranging assembly feet on the base part, wherein at least one, preferably each, of the assembly feet is a height-adjustable assembly foot in order to align the base part into a horizontal position, the car floor can be leveled in a simple and efficient manner. Assembly foot receptacles for accommodating the assembly feet can also be provided on the base part, so that the assembly feet can be arranged on the base part. During the assembly phase, the car floor can be supported or placed on the shaft bottom of the elevator shaft of the elevator installation by means of the assembly feet. By means of the height-adjustable assembly feet, the local vertical position of the base part can be adjusted within the range of the respective assembly foot. In other words, the height adjustment relates to the distance between the base part and the car floor. Depending on in which direction the adjustment is made on the respective, height-adjustable assembly foot, this distance can be increased or decreased and the desired height can be adjusted.

[0005] If necessary, the assembly feet can be removed again at the end of the installation phase. However, the assembly feet can also be arranged permanently on the base part.

[0006] The base component is for example a member in the form of a composite structure or sandwich structure, as for example known from EP 1 004 538 A1. The base component comprises a floor panel, a cover panel and a centrally arranged composite structure core. The composite structure core, which forms the connection between the floor panel and the cover panel, can be composed of a large number of upright, intersecting lattices of thin sheets, which are firmly connected to the floor panel and the cover panel in a suitable manner. Of course, the base component can also be constructed in a different manner. For example, the core can be formed by one or more layers of honeycomb structure. Instead of the aforementioned, preferably flat base component with a floor panel forming the lower side and a cover panel forming the upper side, other car floor shapes can be considered, which in combination with the height-adjustable mounting feet as introduced here, for example the profiled part shown in WO 2006 / 026872 A2, which is trapezoidal in lateral view.

[0007] In order to form an elevator car which is essentially cuboid, the base component can have a rectangular shape in plan view. It is particularly advantageous in this case if four mounting feet are provided, which are arranged in the corner regions of the base component. Mounting foot receptacles can also be provided in the corner regions of the base component. Here, this arrangement in the corner regions comprises arranging the mounting feet near or adjacent to the corners of the base component. It is thus not necessary to position the mounting feet directly next to the corners in the geometric sense. Here, the mounting feet can be positioned inside or outside the vertical projection of the base component.

[0008] The car floor can thus be supported on the shaft floor during the mounting phase, preferably by means of four height-adjustable mounting feet. As an alternative to the arrangement in the corners, it is also conceivable to arrange the mounting feet centrally on the four rectangular sides of the base component.

[0009] The respective height-adjustable mounting feet can be designed in such a way and are here preferably manually operable, that a height adjustment of the base component can be achieved. Alternatively, instead of manual operation, it is also conceivable to use a drive to perform the height adjustment. Such a mounting foot which can be driven by means of a motor can also be operated by remote control.

[0010] In order to adjust the height, the respective height-adjustable mounting feet can be moved up and down in the vertical direction by means of a mechanical mechanism, for example by means of a screw drive. As an alternative to a screw drive, other mechanical mechanisms are also conceivable, for example a ratchet mechanism, a slide guide, a crank device, a detent device, a telescopic rod or a slide guide. Instead of a mechanical mechanism, it is also conceivable to use a hydraulic or pneumatic mechanism for height adjustment of the mounting feet.

[0011] The mounting feet can be height-adjusted by means of a spindle. Such a spindle is inexpensive and has the characteristics of being stable and durable and easy to operate. The height-adjustable mounting feet which can be operated by means of a spindle can thus be easily adjusted to the desired height.

[0012] The corresponding height-adjustable assembly leg can have a threaded rod which is or can be received in an internal thread associated with the base part and corresponding to the threaded rod to form a spindle. The assembly leg can thus be designed as a spindle. The threaded rod extends preferably in the vertical direction during the assembly phase and when it is arranged on the base part. The internal thread can form the aforementioned assembly leg receptacle.

[0013] Along the sides on the base part, spacing elements can be fixed or formed which position the assembly legs outside the vertical projection of the base part. The spacing elements can here comprise an internal thread in which the threaded rods of the assembly legs are or can be received. The spacing elements are for example angle pieces which are fixed on the vertical side wall sections of the base part.

[0014] For reasons of space, it is advantageous if the assembly legs are positioned within the vertical projection of the base part. In order to position the assembly legs within the vertical projection of the base part, the base part can have an internal thread integrated in itself, in which the respective associated threaded rod is or can be received to form a height-adjustable assembly leg. For this purpose, the base part can have in the corner regions inwards-lying holes through which the threaded rods pass, wherein the holes can have at least sectionally an internal thread in order to form a spindle. For this purpose, the aforementioned base plate of the base part can have for each assembly leg a hole through or into which the threaded rod is inserted.

[0015] For a secure standing, it is advantageous if on the lower end of the respective threaded rod facing the shaft bottom a punch-like support element is arranged which enlarges the support surface to the shaft bottom. The support elements can be connected to the threaded rods for example in a hinged manner by means of ball bearings.

[0016] On the upper end of the threaded rod, an engagement or operating mechanism can be arranged, for example a tool receptacle for a screwdriver or a spanner, an adjustment screw with a separate rotary handle, a wing screw or a toggle screw, whereby the manual operation of the spindle for the adjustment of the height assembly leg is simplified.

[0017] It is thus advantageous if for the securing of the height adjustment a locking nut is respectively mounted on the threaded rod.

[0018] Further, it is advantageous if for the checking of the horizontal position at least one spirit level is fixed to the base part. The spirit level can here be fixed at least temporarily or permanently on the base part. The spirit level can be a circular spirit level or a tube spirit level. The spirit level can be fixed on the base part by means of an adhesive connection. When a tube spirit level is used, it is advantageous if the tube spirit levels are arranged crossing one another.

[0019] Another aspect of the present application relates to a method for assembling an elevator car in an elevator shaft of an elevator installation. Herein, the method can comprise the following steps: (i) fitting a car floor, in particular the car floor described above, into the elevator shaft, wherein the car floor is placed on the shaft bottom; (ii) levelling the car floor standing on the shaft bottom by means of the fitting feet; (iii) fitting the car side walls and, preferably subsequently, the car top onto the car floor levelled in this way. BRIEF DESCRIPTION OF DRAWINGS

[0020] Further individual features and advantages of the present application can be derived from the following description of embodiments and the drawings. Therein:

[0021] Figure 1 A simplified representation of an elevator shaft is shown, wherein a car floor is placed on the shaft bottom;

[0022] Figure 2 A car floor after the levelling process is shown;

[0023] Figure 3 A car floor with fitted car side walls is shown;

[0024] Figure 4 A perspective view of a car floor according to the present application is shown, and

[0025] Figure 5 A partial perspective view of a corner region of a car floor according to an alternative embodiment is shown. DETAILED DESCRIPTION

[0026] Figure 1 A lower region of an elevator shaft 6 of an elevator installation denoted as a whole by 1 is shown. In the present case, the elevator installation 1 has an elevator shaft 6 with a small pit depth. On the shaft bottom 7 of the elevator shaft 6 there is a car floor denoted by 3. The car floor is composed of a base part 4, which predefines a passenger foot area, and fitting feet 5, by means of which the car floor 3 is supported on the shaft bottom 7.

[0027] Concrete is often used for the manufacture of elevator shafts. It is difficult to make the shaft bottom 7 have a flat and horizontal surface. Therefore, the car floor can be in a slightly inclined position after the first placement. By means of the height-adjustable fitting feet 5, this inclined position can be corrected. To this end, as Figure 2As is shown by way of example in the middle, the height-adjustable assembly feet 5 are adjustable in height until the base part is positioned in the desired horizontal position. After the base part 4 has been aligned, assembly of the elevator car can continue. The car side walls 8 can now be built on the car floor 3, which has been leveled in this way. After the car side walls 8 have been installed, the car roof 9, shown in dashed lines, can finally be installed on the car side walls 8.

[0028] Figure 4 A top view of a rectangular car floor is shown, which has four height-adjustable assembly feet 5 arranged in the corner regions. The respective assembly feet 5 are arranged outside the base part 4 in its corner regions by means of spacer elements 14. In the present case, the spacer elements 14 are embodied as angle pieces, which are fixed to the vertical side wall sections 17 of the base part 4. In the embodiment according to Figure 4 , the height-adjustable assembly feet are arranged outside the vertical projection of the base part 4. In Figure 5 , a variant is shown, in which the height-adjustable assembly feet 5 are arranged within the vertical projection of the base part.

[0029] The height-adjustable assembly feet 5 are designed and can be operated manually in such a way that a height adjustment of the base part 4 can be achieved. An inclined position, represented by the inclination angle a of the car floor relative to the horizontal, can thus be eliminated. In the example shown in Figure 2 , an assembly person operates the left height-adjustable assembly feet, designated 5'. The respective assembly feet 5, 5' can be moved up and down in the vertical direction for height adjustment by means of a mechanical mechanism 10, for example by means of a screw drive.

[0030] It follows from the two embodiments according to Figure 4 and Figure 5 that the assembly feet 5 can be adjusted in height by means of a screw. The height-adjustable assembly feet 5 have a threaded rod 11, which is accommodated in an internal thread associated with the base part 4 and corresponding to the threaded rod. By means of the threaded rod 11, which extends in the vertical direction, the car floor 3 can be locally raised or lowered at the respective assembly feet and thus the desired height can be precisely adjusted.

[0031] In the embodiment according to Figure 4 , the spacer elements 14 contain an internal thread, in which the threaded rods 11 of the assembly feet 5 are accommodated. On the lower end of the threaded rods 11, which faces the shaft bottom, a punch-like support element 12 can be provided, as is shown in Figure 4 , for enlarging the support surface for the shaft bottom 7. In order to operate the screw, the upper threaded rod end of one of the threaded rods 11 is grasped, for example by means of a tool (not shown here), and rotated clockwise or counterclockwise as required in order to adjust the height.

[0032] In embodiments according to Figure 5 In this embodiment, the base part has an internal thread integrated therein or arranged on the inner side, in which the respective threaded rod 11 is accommodated. In this embodiment, the nut, which is fixed to the base plate 16 and has a metal sleeve attached thereto, has an internal thread 13. On the upper end of the threaded rod 11, for example, a screw head 18 for an internal hexagon spanner is provided. Of course, other engagement or operating mechanisms for height adjustment are also conceivable. Instead of the screw head shown in the example, for example, a rotary handle, a wing screw or a toggle screw is considered as an operating mechanism.

[0033] It can be seen from Figure 5 that the base part 4 is a flat component of a composite or sandwich structure. The base part 4 mainly consists of a base plate 16, a cover plate 15 and a central (not specifically shown) composite core.

[0034] For checking the horizontal position, a level, for example a circular level or two tubular levels arranged crosswise with respect to each other, can be fixed (not shown) on the base part.

Claims

1. A car floor plate (3) for an elevator car (2), the car floor plate having a base component (4), characterized in that, Assembly feet (5) are arranged on the base component (4). During the assembly stage, the car floor plate (3) can be supported on the bottom of the elevator shaft of the elevator equipment by the assembly feet (5). In order to align the base component (4) in a horizontal position, at least one of the assembly feet (5) is designed as a height-adjustable assembly foot. The base component (4) is a flat base component for pre-defining a foot area for passengers in the interior space of the elevator car (2). The corresponding height-adjustable assembly feet (5) are designed to enable the height adjustment of the flat base component (4).

2. The car floor according to claim 1, characterized in that, Each of the mounting feet (5) is designed as a height-adjustable mounting foot.

3. The car floor according to claim 1, characterized in that, In order to form an elevator car (2) that is basically rectangular in shape, the base component (4) has a rectangular shape in the top view and is provided with four assembly legs (5).

4. The car floor according to claim 3, characterized in that, The four mounting feet (5) are arranged in the corner area of ​​the base component (4).

5. The car floor according to any one of claims 1 to 4, characterized in that, The mounting feet (5) can be height adjusted via the lead screw (10).

6. The car floor according to any one of claims 1 to 4, characterized in that, The corresponding height-adjustable mounting feet (5) have threaded rods (11).

7. The car floor according to any one of claims 1 to 4, characterized in that, Spacer elements (14) are fixed or formed on the side of the base component (4) for positioning the mounting legs (5) outside the vertical projection of the base component.

8. The car floor according to any one of claims 1 to 4, characterized in that, In order to position the mounting leg (5) within the vertical projection of the base component, the base component (4) is provided with an internal thread (13) that can accommodate each associated threaded rod (11) to form a height-adjustable mounting leg (5).

9. The car floor according to any one of claims 1 to 4, characterized in that, On the lower end of the mounting leg facing the bottom of the shaft, a support element (12) designed as a punch is arranged to expand the support surface for the bottom of the shaft (7).

10. The car floor according to claim 9, characterized in that, The support element (12) is arranged on the lower end of the corresponding threaded rod (11) of the mounting leg facing the bottom of the shaft.

11. The car floor according to any one of claims 1 to 4, characterized in that, To check the horizontal position, at least one level instrument is permanently or at least temporarily fixed to the base component (4) during the assembly phase.

12. A method for assembling an elevator car (2) in an elevator shaft (6) of an elevator system (1), The car floor plate (3) is installed into the elevator shaft (6), wherein, The car floor (3) is placed on the bottom (7) of the shaft, wherein the base component (4) of the car floor is a flat base component used to pre-define a foot area for passengers in the interior space of the elevator car (2). The height of the flat base component (4) is adjusted by operating at least one height-adjustable assembly foot (5), thereby leveling the car floor plate (3) which is erected on the bottom (7) of the shaft via the assembly foot (5). The car side wall (8) is added to the car floor plate (3).

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