DE29717998U1 - Cabin suspension - Google Patents

Description

PATENT ATTORNEYS FELIX-MOTTL-STRASSE 1A D-76185 KARLSRUHE

M4961/97

13 October 1997

hydraulic lift systems
waiter mayer gmbh

Cabin suspension

Description

The invention relates to a cabin suspension for an elevator, in particular for a hydraulic single-piston elevator, with two guide elements for guiding the cabin suspension on the guide rails of the elevator, as well as with a support arrangement connected to the guide elements and running essentially perpendicular to the direction of movement of the elevator cabin for holding the elevator cabin.

Such a cabin suspension serves to guide the cabin on the guide rails of the elevator, whereby the ropes or the hydraulic cylinder usually also act on the cabin suspension.

Usually, the elevator car is simply placed on the support arrangement of the cab suspension and screwed to it. When assembling an elevator on site, the problem often arises that the entry edge of the elevator car is not exactly parallel to the exit edges of the individual floors due to manufacturing tolerances and inaccuracies in the alignment of the guide rails. This problem is solved when assembling an elevator

This has so far been eliminated by loosening the screws that connect the elevator car to the support arrangement and screwing them back in with spacers in between. Since this work usually has to be carried out in an elevator shaft, the screw connections that need to be loosened are difficult to access. The exact alignment of the elevator car relative to the exit edges of the elevator shaft is therefore complicated and time-consuming.

The present invention is based on the object of improving a cabin suspension of the type mentioned at the outset in such a way that the alignment of the elevator cabin relative to the exit edges of the elevator shaft is simplified during assembly.

This object is achieved by a device having the features of claim 1.

Advantageous embodiments and further developments of the invention result from claims 2 to 7.

The cabin suspension according to the invention therefore comprises two guide elements for guiding the cabin suspension on the guide rails of the elevator and a support arrangement for holding the elevator cabin, which runs essentially perpendicular to the direction of movement of the elevator cabin and is pivotally connected to the guide elements, wherein at least one support strut with adjustable length is additionally provided, which - spaced from the articulation points of the support arrangement on the guide elements - is hinged on the one hand to a guide element and on the other hand to the support arrangement.

Since the resulting bracing of the support arrangement is adjustable, preferably because the support strut is an adjustment tube with a right-left thread, the screw connection of the elevator car to the support arrangement no longer has to be loosened in order to align the entry edge: The alignment can be carried out in a simple manner by adjusting the support strut; if an adjustment tube is used as the support strut, this is done by simply turning the adjustment tube.

The support arrangement can essentially consist of two longitudinal beams connected in a U-shape or frame-like manner by means of cross beams, with each of the two longitudinal beams preferably being assigned a support strut.

The support arrangement according to the invention is preferably used together with guide elements that are connected to form a slide-shaped frame. This results in a support arrangement that has a certain inherent stability due to the presence of two fixed articulation points.

There are particular advantages if the support arrangement is dimensioned in such a way that - with sufficient inherent stability - it can still twist by a few centimeters if the two support struts are adjusted asymmetrically: This means that the elevator cabin can be aligned with the exit edges of the elevator shaft in any spatial direction.

Finally, the longitudinal beams can also be designed to be adjustable in length in order to allow adaptation to different cabin sizes or to compensate for manufacturing tolerances.

An embodiment of the invention is described in more detail below with reference to the accompanying drawings. They show:

Figure 1 is a perspective view of an inventive

Cabin suspension;

Figure 2 is a side view of the same cabin suspension.

The cabin suspension 1 shown in Figure 1 consists of a left guide element 2 and a right guide element 3, which are connected to a slide-shaped frame via an upper and a lower crossbar 4 and 5 and a stabilizing cross 6, as well as a support arrangement 7 hinged to the guide elements 2 and 3. The support arrangement 7 is essentially formed by a left and a right longitudinal beam 8 and 9, which are connected in a frame-like manner via a rear and a front crossbar 10 and 11.

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The stability of the support arrangement 7 is also increased by a further support element 12.

The left longitudinal member 8 is pivotably attached to the left guide element 2 at the articulation point 13, just as the right longitudinal member 9 is pivotably attached to the right guide element 3 at the articulation point 14. The stability of the support arrangement 7 is ensured despite its pivotability by the fact that the left longitudinal member 8 is assigned a left support strut 15 which is pivotally attached to the left longitudinal member 8 and to the left guide element 2; in a corresponding manner, the right longitudinal member 9 is also held in position by a right support strut 16.

In the embodiment shown, the support struts 15 and 16 are designed as adjustment tubes with right/left threads and therefore only need to be rotated in order to be able to raise or lower the longitudinal beams 8 and 9. By raising or lowering the longitudinal beams 8 and 9 in this way, an elevator car (not shown) that is screwed to the beam arrangement 7 using the elongated holes 17 can be aligned relative to the exit edges of the elevator shaft (also not shown).

For the sake of clarity, the guide rails of the elevator and the parts of the guide elements 2 and 3 that roll or slide on them have not been shown. The hydraulic cylinder that engages the cabin suspension 1 has also not been shown for the sake of clarity.

The longitudinal beams 8 and 9 of the illustrated embodiment consist of square tubes, into each of which a telescopic extension 18 and 19 is slidably inserted. This allows the lengths of the longitudinal beams 8 and 9 to be easily changed, whereby the extensions 18 and 19 can be screwed to the longitudinal beams 8 and 9 in a wide variety of positions via the long holes 20.

Figure 2 shows a side view of the embodiment of a cabin suspension 1 according to the invention already shown in Figure 1. Accordingly, only the right guide element 3, a side view of the upper and lower cross struts 4 and 5 and the stabilizing cross 6, as well as

of the support arrangement 7, only the right longitudinal support 9, the articulation point 14 and the right extension 19 together with the elongated holes 20 used for their fastening are visible.

From Figure 2 it can be seen that the support strut 16 is pivotally connected to the carrier arrangement 7 via an upper fastening plate 21 and pivotally connected to the right guide element 3 via a lower fastening plate 22. The longitudinal support 9, together with the support strut 16 and the lower part of the guide element 3, thus forms a triangle, the interior angles of which can be easily changed by changing the length of the support strut 16 due to the pivotable suspension of the parts.

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M4961/97

13 October 1997

List of reference symbols

1 cabin suspension

2 Guide element (left)

3 Guide element (right)

4 Cross brace (upper)

5 Cross brace (lower)

6 Stabilization cross

7 Carrier arrangement

8 Longitudinal member (left)

9 Longitudinal member (right)

10 Cross member (rear)

11 Cross member (front)

12 Support element

13 Articulation point

14 Articulation point

15 Support strut (left)

16 Support strut (right)

17 long holes

18 Extension (left)

19 Extension (right)

20 long holes

21 Mounting plate (upper)

22 Mounting plate (lower)

Claims (7)

-7- M4961/97 13 October 1997 Protection claims 1. Cabin suspension for an elevator, in particular a hydraulic single-piston elevator, with two guide elements (2, 3) for guiding the cabin suspension (1) on the guide rails of the elevator, and with a support arrangement (7) connected to the guide elements (2, 3) and running essentially perpendicular to the direction of movement of the elevator cabin for holding the elevator cabin, characterized in that the support arrangement (7) is pivotally connected to the guide elements (2, 3) in each case, and that in addition at least one support strut (15, 16) with adjustable length is provided, which, spaced from the articulation points (13, 14) of the support arrangement (7) on the guide elements (2, 3), is articulated on the one hand to a guide element (2, 3) and on the other hand to the support arrangement (7). 2. Cabin suspension according to claim 1, characterized in that the guide elements (2, 3) are connected to form a slide-shaped frame. 3. Cabin suspension according to one of claims 1 or 2, characterized in that the support arrangement (7) consists essentially of two longitudinal supports (8, 9) connected in a U-shape or frame-like manner by means of cross supports (10, 11). 4. Cabin suspension according to claim 3, characterized in that a support strut (15, 16) is assigned to each of the two longitudinal beams (8, 9). 5. Cabin suspension according to claims 2, 3 and 4, characterized in that the support arrangement (7) is dimensioned such that a slight twisting of the support arrangement (7) is possible due to an asymmetrical adjustment of the two support struts (15, 16). -8th- 6. Cabin suspension according to one of claims 3 to 5, characterized in that the longitudinal beams (8, 9) are designed to be adjustable in length. 7. Cabin suspension according to one of claims 1 to 6, characterized in that the support struts (15, 16) are designed as adjustment tubes with right/left threads.