EP1712726A2 - Stair with adjustable inclination - Google Patents

Abstract

The aid has a stair-type arrangement including a stair part (4), which is formed with intermediate stages (5) from two parallel tread supports (3). The stair part is connected with gusset plates (10), which are fastened at the supports. Two slotted holes are arranged at a distance from one another in the respective plates, by which fastening screws grasp through and the level is designed as chassis frame attacks.

Description

The invention relates to a tilt-adjustable climbing aid according to the preamble of the protection claim. 1

In the context of the present invention, a climbing aid is understood to mean any staircase-type installation with which it is possible to reach from a lower level to a higher, above-lying level.

It staircase parts are used for this purpose usually, and there is a need to form such stairs parts tilt adjustable to create at an offset between the lower and the upper level of the staircase in the most favorable position can.

In the following description, a pedestal stair is described as an embodiment, to which the present invention is not limited. Instead of a pedestal steps are also known as lifts and so-called highways, gangways, work platforms, maintenance platforms and the like. In the case of all ascent aids, it is therefore a matter of wanting to get from a lower level via a staircase section to a higher level.

So far, it is known to connect the staircase part at the higher level by a so-called gusset plate. In this case, it is necessary to connect the staircase part consisting of two parallel rails and intermediate steps, each with an upper gusset plate which is fastened to the upper spars of the staircase part, to the upper level. If the plane is designed, for example, as a mobile scaffold or as a stand scaffold, it is known to provide this gusset plate with a number of holes and in this case to use fastening screws which connect the staircase part via the gusset plate and the holes arranged there fixedly to the stationary or chassis.

The term "gusset plate" is broadly worded. Under a gusset plate is also a "node plate" understood or other sheet-like connecting elements, which are usually plate-shaped. It can also be used in this case a casting.

When using gusset plates, it is therefore known to provide the gusset plate with spaced holes, and to drive through these holes fastening screws that engage with its bolt-side end in an associated nut or a screw thread.

Disadvantage is that with the use of gusset plates with defined holes not easily the inclination of the staircase part can be changed to the stationary or moving pedestal part.

If you want to change the inclination, then it is necessary to look in the gusset other holes that are not usually available. It must therefore be attached their own holes.

Another disadvantage is that you possibly then exchanges the gusset plate against another gusset plate, which have the necessary holes for adjusting the required inclination of the staircase part.

Thus, it is necessary to stock a variety of gusset plates for incline adjustable stair parts, which must be used if necessary (when changing the inclination).

The arrangement of a plurality of holes in a grid plate designed as a node plate has the disadvantage that overall the cross section of the node plate is weakened and on the other hand, a stepless inclination adjustment of the staircase part to the stationary or mobile scaffolding is not possible.

The invention is therefore based on the object, a staircase part of a climbing aid of the type mentioned in such a way that it can be connected continuously to a stationary or mobile scaffold or other connection level, without the need for the use of other fasteners.

To solve the problem, the invention is characterized by the technical teaching of claim 1.

An essential feature of the invention is that the staircase is connected to the side walls attached to the spars gussets and that in the respective gusset plate at least two spaced-apart, approximately arcuate slots are present through which fastening screws reach through and on as a driving or scaffold stand attack trained level.

With the introduction of elongated holes, which are preferably bent in the direction of the pivot axis of the staircase part, there is now the significant advantage that now by the fastening screws which engage in the slots, a continuous pivoting of the staircase part with the attached gusset plate to the stand or mobile scaffolding is possible.

To adjust the inclination of the staircase part to the stationary or mobile scaffold, it is therefore sufficient to loosen the fastening screws, so as to pivot the gusset plate in the region of the slots with the staircase part hanging thereon, in turn, then the fixing screws änzuziehen.

With one and the same gusset plate thus different inclinations of the staircase part can be adjusted.

In a preferred embodiment, the slots and the length of the slots are formed so that, for example, an inclination adjustment of a staircase portion in the range of 30 ° to 60 ° is given to a fixed mounting surface.

To adjust the inclination, it is preferred in this case if the gusset plate is firmly attached to the outside of the spars of the staircase part and projects laterally beyond the end faces of the spars of the staircase part, so as to form a connecting plane to the stationary stand or scaffold. Furthermore, it is essential that there is a separate attachment hole beyond the elongated holes, which has a fastening screw which engages in the stationary or mobile scaffolding.

Furthermore, it is essential that the stationary or mobile scaffold still further fastening screws are assigned, which reach through the elongated holes.

To adjust the inclination thus several screws are loosened, namely once the fixing screw, which passes through the singular hole in the node plate, which serves as a pivot axis for the gusset plate and the fastening screw in the slot.

After loosening this fastening screw, the gusset plate can thus be pivoted by inclination adjustment of the staircase part, if at the same time the fastening screws passing through the oblong holes have been loosened.

After the inclination adjustment of the staircase part all fastening screws are tightened again on the stand or scaffold and the new inclination adjustment is guaranteed.

The subject of the present invention results not only from the subject matter of the individual claims, but also from the combination of the individual claims with each other.

All information and features disclosed in the documents, including the abstract, in particular the spatial design shown in the drawings, are claimed to be essential to the invention insofar as they are novel individually or in combination with respect to the prior art.

In the following the invention will be explained in more detail with reference to drawings showing only one embodiment. Here are the drawings and their description further essential features and advantages of the invention.

Figur 1:

perspektivische Ansicht einer Podesttreppe;

Figur 2:

eine Seitenansicht einer Teildarstellung der Podesttreppe mit einem Winkel von 45° für das Treppenteil;

Figur 3:

die gleiche Darstellung wie Figur 2 mit einem Winkel von 60° für das Treppenteil;

Figur 4:

die Draufsicht auf das Knotenblech;

Figur 5:

die Seitenansicht des Knotenblechs;

Figur 6:

die perspektivische Ansicht des Knotenblechs;

Figur 7:

ein Schnitt durch die Befestigung des Knotenblechs an dem Holm des Stand- oder Fahrgerüstes;

Figur 8:

Draufsicht auf den Kopf der Befestigungsschraube.

Show it:

FIG. 1:

perspective view of a pedestal staircase;

FIG. 2:

a side view of a partial view of the pedestal steps at an angle of 45 ° for the staircase part;

FIG. 3:

the same view as Figure 2 with an angle of 60 ° for the staircase part;

FIG. 4:

the top view of the gusset plate;

FIG. 5:

the side view of the gusset plate;

FIG. 6:

the perspective view of the gusset plate;

FIG. 7:

a section through the attachment of the gusset plate to the spar of the stationary or mobile scaffold;

FIG. 8:

Top view of the head of the fixing screw.

Reference to the figures 1 to 8, the attachment of a staircase part 4 of a pedestal steps 1 is explained in more detail on a support frame 11 as an exemplary embodiment of a tilt-adjustable climbing aid.

The staircase part 4 consists of two parallel arranged stair rails 3, which preferably consist of a light metal alloy and corresponding longitudinal grooves 17 (see Figure 7).

It is an extruded aluminum profile.

Instead of an extruded light metal profile and plastic profiles can be used.

The staircase part 4 is further connected to a stair railing 2 in a conventional manner, wherein the stand scaffold in its upper part has a circumferential stair railing.

The staircase part 4 has individual, mutually parallel stages 5, which are also connected laterally via fasteners not shown in detail with the stair rails 3.

The stationary or chassis initially consists of a horizontal base frame 6 with mutually parallel longitudinal beams 9, which are interconnected by respective transverse beams 7 and give an approximately rectangular frame.

Laterally on the frame cross member 7 are arranged, on which rollers 8 are fixed.

At this base frame 6, a support frame 11 is now attached, which merges into an upper footprint 26.

According to the invention now the inclination of the staircase part 4 to the upper stand or chassis 26, 11, 6 are set.

For this purpose, it is necessary to realize the connection of the individual parts by gusset plates 10.

It is essential that, for example, the staircase part 4 is supported in the upper region by obliquely extending struts 12, 13 and these struts are in turn arranged by the gusset plates 10 according to the invention to the stair struts 3 of the staircase part 4.

Furthermore, the connection of the upper part of the staircase part 4 takes place via the gusset plates 10 according to the invention to the struts 13 of the gauging surface 26.

Furthermore, there is also the support frame 11 of vertical struts, which are attached by means of the junction plates 10 according to the invention to the other struts 9, 13.

This results in the universality of the gusset plates 10 used, which not only serve to set a slope, but also for the production of firm connections.

In Figure 2 is shown as a first embodiment that the upper node plate 10 by means of slots 16 and here passing through fastening screws is attached to the strut 13, and Figure 3 shows a different inclination setting, where it can be seen that the entire staircase part 4 would be rotated and here now a slope at an angle 18 'to the lower base frame 9 occupies.

For example, while the angle 18 in FIG. 2 is 45 °, the angle 18 'in FIG. 3 is 60 °.

Similarly, the angle 27 in Figure 2 is about 135 °, while the angle 27 'in Figure 3 is about 120 °.

Essential features of the gusset plate 10 according to the invention will be described with reference to FIGS. 4 to 6.

First, it is essential that in the gusset plate on one side, z. B. in the upper left corner, a mounting hole 24 is present and that in contrast, two spaced-apart mounting holes 23 are present.

The two mounting holes 23 are used for fastening the junction plate 10 to the stair member 3, whereby two spaced attachment points are ensured.

The upper - spaced therefrom - mounting hole 24 is used to define a pivot point around which the gusset plate is then pivoted when the fastening screws are released. Through the mounting hole 24 engages a clamping screw 15, as shown in Figure 7.

It preferably consists according to Figure 8 of an approximately oval clamping head 19 which is suitable to engage with a corresponding rotation in the longitudinal groove 17 of the aluminum profile and dig in there.

There may be additional tips 28 to ensure a permanent engagement of the profile in the walls of the longitudinal groove 17.

The clamping head 19 is preferably material integral with a threaded bolt 20 which engages either through the mounting holes 23, 24 or through the slots 16, 25 therethrough.

On the opposite side with respect to the node plate 10, a washer 22 and a nut 21 seated thereon are fixed, so that a secure attachment is provided.

The disc 22 may also be connected to the nut 21. Likewise, the nut 21 may be self-locking.

It is now important in the connection, that initially all fastening screws are screwed, with the mounting holes 24 and the slots 16 carry appropriate mounting screws.

If now the inclination to be adjusted, then first the clamping screws 15 are loosened in the slots 16 and then the clamping screw 15 in the mounting hole 24th

It adjusts the inclination of the staircase part 4, as shown for example in the transition from Figure 2 to Figure 3.

Thus, in turn, all fastening screws (clamping screws 15) are tightened in the fastening holes 24 and the oblong holes 16 and thus a perfect inclination adjustment of the staircase part 4 to the upper strut 13 is achieved.

It is important that even when loosening screws (clamping screws 15) does not drop the stairs part, because always the fixing screw remains through the mounting hole 24 and frictionally transmits a corresponding pivoting moment.

In this way, a stable bond always remains.

FIG. 2 shows that also further connecting plates 14 can be present, which likewise has longitudinal slots lying in the longitudinal direction, which also serve for adjusting the inclination, if - as shown in FIG. 2 - the staircase part 4 is adjusted in inclination by the angle 18.

The length of the oblong holes 16, as shown in FIG. 4, depends on the setting angle 18.

Furthermore, a slot 25 is still shown, which serves for other fastening tasks. The lateral mounting hole 29 is used for other fastening tasks, which are not shown here.

LIST OF REFERENCE NUMBERS

1

stair

2

banisters

3

stairs Holm

4

stair part

5

step

6

basic Placed

7

transverse spar

8th

role

9

longeron

10

gusset plate

11

support frame

12

strut

13

strut

14

connecting plate

15

clamping screw

16

Long hole

17

longitudinal groove

18

Angle 18 '

19

clamping head

20

threaded bolt

21

mother

22

disc

23

mounting hole

24

mounting hole

25

Long hole

26

footprint

27

Angle 27 '

28

sharpen

29

mounting hole

Claims (16)

Tilt-adjustable climbing aid and in particular a staircase-like installation for ascending from a lower level to an upper level, the staircase-like installation comprising a staircase part (4) which is formed by two parallel stair struts (3) with intermediate steps (5) and at an upper one Level is connected, characterized in that the stair part (4) with laterally to the stair rails (3) attached gussets (10) is connected and that in the respective gusset plate (10) at least two spaced apart, approximately arcuate elongated holes (16 , 25) are present through which engage through fastening screws and engage a formed as a stationary or chassis level. Tilt adjustable climbing aid according to claim 1, characterized in that the stationary or chassis parallel to each other arranged longitudinal beams (9), which by means of corresponding rollers (8) having transverse bars (7) are interconnected and a horizontal base frame (6) with an approximately rectangular Frame, which has a fixed support frame (11) and merges into an upper contact surface (26), wherein the support frame (11) is formed of vertical struts, which by means of the gusset plates (10) to the struts (9, 13) are attached , Inclinable climbing aid according to claim 1 and 2, characterized in that the staircase part (4) in the upper region by means of obliquely extending struts (12, 13) is supported, wherein the struts (12, 13) by means of gusset plates (10) on the stair rails (3 ) of the staircase part (4) are arranged and the inclination of the staircase part (4) to the upper stand or chassis (26, 11, 6) is adjustable. Tilt adjustable climbing aid according to claims 1 to 3, characterized in that the arcuately shaped elongated holes (16, 25) are preferably bent in the direction of the pivot axis of the staircase part (4). Inclinable climbing aid according to claims 1 to 4, characterized in that the elongated holes (16, 25) fastening screws for a continuous pivoting of the staircase part (4) with the attached thereto gusset plates (10). Inclinable climbing aid according to claims 1 to 5, characterized in that for adjusting the inclination of the staircase part (4), the fastening screws and clamping screws (15) are to be solved and the gusset plate (10) in the region of the elongated holes (16, 25) with the thereto hanging staircase part (4) is pivotable. Tilt adjustable climbing aid according to claims 1 to 6, characterized in that the clamping screw (15) through the mounting hole (23, 24, 29) of the gusset plate (10) passes through and an oval clamping head (19), which in a corresponding rotation in a longitudinal groove (17) engages, wherein the clamping head (19) of the clamping screw (15) is formed integrally with a threaded bolt (20) which through the mounting holes (23, 24, 29) or through the slots (16, 25) through in a on the opposite side of the node plate (10) arranged nut (21) engages with an underlying disc (22). Inclinable climbing aid according to claims 1 to 7, characterized in that the gusset plate (10) has differently adjustable inclinations of the staircase part (4). Tilt adjustable climbing aid after the. Claims 1 to 8, characterized in that the elongated holes (16, 25) and the length of the elongated holes (16, 25) have an inclination adjustment of a staircase part (4) of 30 ° to 60 ° to a fixed mounting surface. Tilt adjustable ascent aid according to claims 1 to 9, characterized in that the gusset plate (10) is fixedly attached to the outside of the staircase strut (3) and projects beyond the end face of the staircase strut (3), wherein the gusset plate (10) forms a connection plane to the stationary stand or mobile scaffold. Tilt-adjustable climbing aid according to claims 1 to 10, characterized in that the elongated holes (16, 25) in the gusset plate (10) spaced mounting holes (23, 24, 29) with a fastening screw (15), which in the stationary or chassis intervention. Tiltable climbing aid according to claims 1 to 11, characterized in that the stand or chassis further fixing screws (15) are assigned, which pass through the elongated holes (16, 25). Tilt adjustable ascent aid according to claims 1 to 12, characterized in that for adjusting the inclination of the staircase part (4) through the gusset plate (10) cross-fastening screws (15) in the mounting holes (23, 24, 29) and the oblong holes (16 , 25) on the stand or chassis are loosened. Inclinable climbing aid according to claims 1 to 13, characterized in that after the inclination adjustment of the staircase part (4) through the gusset plate (4) passing through fastening screws (15) in the mounting holes (23, 24, 29) and slots (16, 25) be tightened on the stand or chassis. Inclinable climbing aid according to claims 1 to 14, characterized in that the staircase spar (3) is designed as a light metal profile or plastic profile and has longitudinal grooves (17). Inclinable climbing aid according to claims 1 to 15, characterized in that the angles (18, 18 ', 27, 27') resulting from the inclination adjustment of the staircase part (4) are mutually dependent.

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