JPS6250628B2 - - Google Patents

Abstract

1. Hoist for a facade having a carriage (1) which can travel on rails on the roof of a building and bears two booms (12, 13) which may pivot about vertical axes and by which hoisting cables (14, 15) for suspending a cradle (16) are guided, characterized in that the two booms (12, 13) have different lengths.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a lifting device for a facade having a truck that can run on rails laid on the roof of a building, the truck holding two pivotable jibs, It relates to a type in which a lifting rope for suspending a gondola is guided through both jibs.

This type of façade lifting device is used in particular for cleaning and cleaning the facades and windows of high-rise buildings. For this work, one or several operators board the gondola,
The gondola is then swung in front of the building's exterior wall by a jib, and is moved vertically along the façade by a lifting rope and horizontally by a trolley running on rails. .

For example, the Federal Republic of Germany Patent Application Publication No.
In the façade lifting device known from document 2326400, the two jibs can be pivoted about a horizontal axis, and when pivoting outwards or inwardly, the two jibs are pivotable. They are spaced apart from each other to allow the gondola to be guided between the jibs. As a result, the gondola suspended in front of the façade will always lie in the same plane as the trolley (perpendicular to the façade). Known façade lifting devices allow sufficient movement along the façade for maintenance and cleaning, but in corner areas of buildings there is often a difficulty in reaching said corners by the gondola or the gondola occupants. occurs. This is because, in conjunction with the rails laid on the roof of the building, it is not possible to guide the gondola horizontally around the corners of the building. To cope with this case, the entire upper structure of the truck is mounted on a turntable, and the turntable is rotated about a horizontal axis. Although this improves the positionability of the gondola, satisfactory results are rarely achieved.

The object of the invention is to improve the usability of a façade lifting device of the type mentioned at the outset, and in particular to improve its movement along corner areas of buildings.

The invention solves this problem in that the two jibs are mounted pivotably about a vertical axis and have different lengths.

With the façade lifting device of the invention, even when the truck is stationary, the gondola can be moved horizontally by pivoting the jib about the associated vertical axis. The gondola then simultaneously performs a movement away from or toward the façade; however, such a movement toward and away from the façade is particularly desirable in order to adjust the distance of the gondola with respect to the façade.

This is possible in particular with the facade lifting device according to the invention, without the need for specially guided rails or particularly long constructions of the jib.

In the façade lifting device of the present invention, the inactive position of the gondola, which is lowered onto the roof of the building, is located in front or behind the trolley when viewed in the direction of movement. In certain cases, it is also possible to lower the gondola in front of the truck superstructure parallel to the direction of movement, as in known facade lifting devices. In any case, the possibility for lowering the gondola is obtained and it is always possible to find an inactive position for the gondola even if the space situation on the roof is unfavorable.

The static aspects of the façade lifting device according to the invention are also advantageous. This is because there is no need for special supports, e.g. lifting cylinder arrangements in known facade lifting systems, and the jib is supported on a simple swivel bearing with a vertical swivel axis, which in particular This is because it absorbs vertical forces, providing relatively greater safety against gondola crashes. The service life is also improved. This is because the relationship between the centers of gravity in the working position and in the non-working position is almost the same.

Furthermore, due to the different lengths of the two jibs, other possibilities for steering the gondola, i.e. for positioning the gondola, are obtained. In that case, it is also possible to bring the gondola to a position at right angles to the building façade. For this purpose, the difference in length between the two jibs is equal to the distance between the two lifting ropes attached to the gondola.

Each jib can have its own swing drive. According to an advantageous embodiment of the invention, the positions of the two jibs can be adjusted independently of each other by operating the swivel drives of the two jibs independently of each other. It is thus possible, for example, to bring the gondola into a position in which it is not parallel to, but oblique to, the façade of a building. This is advantageous when working in corner areas of building façades. On the other hand, by moving both jibs synchronously or divergently from each other, it is possible to change the amount of overhang of the jib beyond the front wall of the building and thus the distance between the gondola and the front wall of the building.

If the jibs are arranged at different heights and/or have different inclinations, as described in the embodiment section of the invention, it becomes possible to move the gondola almost unlimitedly. This means that it is then possible to bring both jibs into a position where they intersect with each other, and the gondola can change its working position virtually steplessly, without having to replace the roof truck.

If both jibs are configured with different lengths and placed at different heights, the gondola, which is parallel to the façade, can be moved to the right or to the left with respect to the upper structure of the bogie. It is particularly advantageous that during the displacement, the distance of the gondola relative to the façade can also be varied, and such a change is also possible if the gondola is positioned transversely to the façade. This allows the gondola to be moved along recesses to work in recesses that are narrower than the normal width of the gondola, even if the recesses are recessed to the rear of the façade frontage. .

The jib can also be additionally pivotable about a horizontal axis as in the prior art.

The spacing between the pivot axes of both jibs can be adapted to the particular circumstances and may be larger or smaller than the spacing between the lifting ropes installed on the gondola, and the spacing between the two jibs about a common pivot axis can be It can also be made pivotable.

Next, embodiments of the present invention will be described with reference to the drawings.

The facade lifting device shown in FIG. 1 has a trolley 1 which can be run on rails 3 by means of a drive 2 in a manner known per se. It is laid on pillar 4. The pillars 4 sit on the roof 5 of a building whose façade 6 with a roof parapet 7 requires maintenance or cleaning. The truck 1 has two bearings 8, 9 with vertical bearing axes, in which there are pivot pins 10, 1 of the two jibs 12, 13.
1 is held, and lifting ropes 14 and 15 are guided through the jibs 12 and 13, respectively, and the ends of both lifting ropes are fixed to both sides of one gondola 16. Both jibs 12,1 mentioned above
3 respectively has a swivel drive (not shown), both swivel drives being built into the carriage 1 and, if necessary, able to be operated independently of one another. The lifting ropes 14, 15 are guided into the truck 1 and wound onto a driven winding drum (not shown). Jib 12, 13 against the horizon
The angle of inclination is approximately 30°. The angle of inclination and length of the jibs 12 and 13 are designed so that the gondola 16 can be easily lifted over the roof parapet 7.

In the embodiment shown in FIGS. 1 to 3, the spacing between the supports 8, 9 is equal to the spacing between the two lifting ropes 14 and 15 of the gondola 16, and thus virtually equal to the width of the gondola 16. Jibs 12, 13 have equal lengths. Therefore, when both jibs 12, 13 pivot in the same direction about the bearing axis, the gondola 16 moves horizontally in front of the façade 6, but the gondola 16 always remains parallel to the façade 6. Figure 3 shows jib 1
The so-called "inactive position" of 2, 13 is shown in solid lines, in which the gondola 16 is lowered in the area of the rail 3 in front or behind the carriage 1, viewed in the direction of movement of the carriage 1. This inactive position of the jibs 12, 13 approximately corresponds to the operating position shown in FIG. 2, and in FIG. has been done. In this operating position, the gondola 16 can be lowered to carry out maintenance or cleaning operations along the façade 6.

As can be seen in particular from FIG. 3, even though the rail 3 for the trolley 1 does not extend into the corner area 17 of the facade 6, but is led away from said corner area 17 in a curve 18. , jib 12, 13
By appropriately turning the gondola 16
can be brought up to the corner area 17 of the façade 6. It is clear that the gondola 16 can be brought closer or further away from the façade 6 by special actuation of the swivel drives of the jibs 12, 13. Especially the third
In the embodiment shown, by pivoting the jib 12 in a clockwise direction, it is possible to bring the gondola 16 closer to the corner area 17 and to swing it partially around the corner.

In the embodiment shown in FIG. 4, the jibs 12, 13 also have the same length. However, the supports 8, 9 of both jibs are arranged at a distance smaller than the mutual distance of the lifting ropes in the gondola 16, that is, smaller than the width of the gondola 16. In the embodiment shown, the two bearings 8 and 9 are located virtually side by side. By simply supporting the jib in this way, a movement is obtained that would only be possible with an additional mechanism (for example a turntable mounted on the truck superstructure). In FIG. 4, the corresponding operating positions are indicated with chain lines.

The embodiment shown in FIG. 5 has jibs 12, 13 of different lengths, that is, in this embodiment
2 is shorter than jib 13. In the operating position shown in solid lines, the gondola 16 is located at a certain distance from the façade 6. The jib 12 extends substantially at right angles to the façade 6 in the perspective view shown. Gondola 16 without changing the relative position of the gondola to Futsard 6.
When attempting to bring the jib 12 and 13 closer to the facade 6, the swing drive device of the jib 12 and 13 moves the jib 1
2 and 13 are operated so that they occupy the operating positions indicated by the dashed lines. The position changed parallel to the facade 6 in this way also applies when moving the jibs 12 and 13 in the same direction but with different turning angles (small for jib 12, large for jib 13). , obtained by being shifted laterally. In other words, the jibs 12 and 13 are spread out relative to each other, in which case the lifting ropes 14 and 15 are also spread out. Moreover, at the same time, the gondola 16 is brought closer to the futsard 6.

Also, if the jibs 12 and 13 are arranged at different heights or have different inclinations, the gondola 16 can also turn 180°,
and, for example, into the operating position shown in broken lines in FIG.

It is of course also possible to bring the gondola into any intermediate position, in particular into an operating position in which the gondola 16 is oriented at right angles to the façade 6, as shown in dashed lines in FIG. The gondola 16 is then changed in exactly the same way as in the parallel position at a distance from the façade. Such an operating position is also obtained if the mutual spacing of the bearings is equal to or greater than the gondola length.

With the illustrated lifting device for façades it is possible to move without difficulty along all types of façades, in particular façades with sections offset from the main front of the building, facades with half-open recesses, etc. . In particular, corner areas of the façade can be reached without difficulty using the illustrated façade lifting device. In some cases, it is also possible to use only a single jib, for example when it is necessary to travel along narrow recesses which cannot be reached by a gondola.

[Brief explanation of the drawing]

Fig. 1 is a side view of the elevator for the facade equipped with a gondola swiveled in front of the front of the building, and Fig. 2 is a view from the front of the building with the gondola swiveled above the roof of the building. Fig. 3 is a front view of the device; Fig. 3 is a plan view of the lifting device for the façade, showing the gondola in different positions; Fig. 4;
3 is a plan view of a different embodiment from that shown in FIG. 3; FIG. 5 is a plan view of the lifting device for a façade shown in a different operating position than that shown in FIG. 4; and FIG. 6 is shown in various operating positions. FIG. 6 is a plan view of a different embodiment; 1... Trolley, 2... Drive device, 3... Rail,
4... Support, 5... Roof, 6... Futsade,
7... Rooftop parapet, 8, 9... Support stand, 1
0,11...Swivel pin, 12,13...Jib, 1
4, 15... Lifting rope, 16... Gondola, 1
7... Corner range, 18... Curve.

Claims (1)

[Scope of Claims] 1. A lifting device for a façade, which has a truck that can run on rails laid on the roof of a building, wherein the truck holds two pivotable jibs,
In a type in which a lifting rope for suspending a gondola is guided through both jibs, both jibs 12 and 13 are supported so as to be pivotable about a vertical support axis and have different lengths. A lifting device for a footsard, which is characterized by: 2. The lifting device for a facade according to claim 1, wherein both jibs 12 and 13 have a common turning drive device. 3. A lifting device for a facade according to claim 1, wherein each jib 12, 13 has its own swivel drive. 4. A lifting device for a facade according to claim 3, wherein the swivel drives can be operated independently of each other. 5. The elevating device for a facade according to claim 1, wherein the difference in length between the jibs 12 and 13 is equal to the distance between the elevating ropes 14 and 15 attached to the gondola 16. 6. A lifting device for a facade according to claim 4, wherein both jibs 12 and 13 are arranged at different heights. 7. The lifting device for a facade according to claim 4, wherein both jibs 12 and 13 have different inclinations. 8. The elevating device for a facade according to claim 1, wherein the distance between the pivot axes of the two jibs 12 and 13 is larger than the distance between the two elevating ropes 14 and 15 attached to the gondola 16. 9. The lifting device for a facade according to claim 1, wherein the distance between the pivot axes of both jibs 12 and 13 is smaller than the distance between both lifting ropes 14 and 15 attached to gondola 16. 10. A lifting device for a facade according to claim 1, wherein both jibs 12 and 13 are pivotable about a common pivot axis.