DE102010047595B4 - Protection against falling from the roof - Google Patents

Abstract

Protection device (9) against the fall of a person from a building roof, characterized in that the protection device (9) is attached from above to a mounting plate (7) which is firmly connected to a passenger basket (6) installed on a lifting truck (1) A lowering of the passenger basket (6) results in a loosening of the protective device (9) attached to a roof part (21) from the mounting plate (7).

Description

The invention relates to a protective device against the fall of a person from a building roof.

Such a protective device is from the DE 100 34 066 B4 known. There a parapet grid is connected to the gutter of a roof, the grid being supported on a building wall by means of bars. The protection device is mounted on the edge of the roof by means of a ladder or a lift truck.

Such lifting trucks are well known from their daily appearance. They serve baskets in which people can stay to bring them to a desired working height of up to several dozen meters. From there, light bulbs can be replaced from high-lying lamps, cleaning work can be carried out on facades or any other activity that is at a certain height with a corresponding risk of injury in the event of a fall.

The lifting trucks can be movable and can be adjusted to the ground using lateral outriggers, so that the lifting arm can be extended safely. Self-propelled lifting trucks are also known, which can be driven automatically to their desired workstation, for example, by means of a chain undercarriage.

From the publication DE 298 08 993 U1 it is also known to connect a complete work platform to a roof in order to carry out work on the roof. The person stands on a slab of the stage while an adjacent slab has been removed, making the underlying roofing accessible. The entire work platform is provided with an outer parapet grille that can be swung away if necessary.

When installing photovoltaic roof systems, it is necessary to secure the installation personnel against falling, regardless of whether the PV system is to be installed on a barn roof 8 meters high or on a residential building roof 5 meters high. This is currently done using conventional scaffolding. Renting the scaffolding, starting it up and bringing it to and from the construction site and erecting it are cost-intensive and make up a significant share of the total assembly costs. In addition, depending on the height of the roof, anchor hooks must be hammered into the building wall to secure the scaffolding. The repair of the associated holes in the masonry make the assembly more expensive.

Accordingly, the present invention has for its object to provide a rapidly deployable protective device against the fall of people from roofs without having to make a major intervention in the building itself.

This object is achieved in that the protective device is plugged onto a mounting plate from above, which is firmly connected to a passenger basket installed on a pallet truck, lowering the passenger basket entails releasing the protective device attached to a roof part from the mounting plate.

As stated above, these guards are known per se. You will e.g. Connected to the roof structure at its edge using clamps such as screw clamps or other suitable fastening means. An edge area should be viewed below the edge, which covers an area up to 1.5m from the edge and can also extend to the masonry, steel skeleton etc. on which the roof is mounted. The present measure relates to the combination of such a known protective device as a detachable component to the passenger basket, from where it can be mounted on the roof.

As well as the usually existing basket with its walls provides protection against falling from the work platform in all external directions, the present protective device, which can be designed as a wall, net or grille, serves as prophylaxis against falling from a roof downwards. A wall or a lattice should be understood to mean any device that is flat and can be easily converted into a space-saving arrangement. The term wall or grating is intended to rule out the fact that the device itself has a spatial extension with a space that would allow a person to enter. On the other hand, a double wall with a narrow space or two grids connected in series with struts are regarded as one wall or one grille. For this purpose, the wall serving as a shield preferably comprises light metal pipes which are installed lengthways, crossways and diagonally. A corresponding lattice then also consists of such light metal profiles in its basic structure. The wall or the grid are between 7m and 20m long. Such protective grids are known, as already mentioned, and are between 70 cm and 170 cm high, depending on the steepness of the roof.

The protective device is advantageously a gable securing bracket with a fixing device for fastening it to the roof part. The roof part is in particular a rafters which the gable securing bracket is releasably attached. Such gable securing devices are known per se, their fixing device consisting of a plurality of hooks, clamping jaws or the like arranged along the longitudinal axis of the grating, which can be connected to the roof edge. The mounting plate is fastened to the person basket in such a way that at least part of the fixing device, ie the hook, clamping jaws, etc. can be reached from the person basket when the gable securing holder is in its installation position on the roof edge.

Due to the fact that the protective grille is attached to the mounting plate from above, a lowering of the passenger basket entails releasing the protective device from the mounting plate. This is a simple, tried and tested mechanism that e.g. is formed by vertically arranged, wedge-shaped downwardly tapering grooves in the mounting plate, in which a counterpart connected to the gable securing holder in the form of a V-shaped rail can engage.

• - Es wird die Schutzvorrichtung an die Montageplatte angebracht;
• - Des Personenkorb wird in eine Position verfahren, in welche die Fixiervorrichtung zumindest teilweise an dem Rand des Gebäudedachs anliegt oder sich unmittelbar vor dem Anliegen befindet, so dass die Herstellung der Verbindung Fixiervorrichtung mit dem Dachrand vom Montagekorb aus möglich ist;
• - Der Fixiervorrichtung wird mit Dachrand verbunden; und
• - Der Giebelabsicherungshalter wird von der Montageplatte gelöst und verbleibt am Dachrand.

The protective device is installed on or under the edge of the building roof by means of the lifting truck in the following, successive steps:

• - The protective device is attached to the mounting plate;
• - The passenger basket is moved into a position in which the fixing device lies at least partially against the edge of the building roof or is located directly in front of the contact, so that the connection of the fixing device with the roof edge is possible from the mounting basket;
• - The fixing device is connected to the roof edge; and
• - The gable securing bracket is released from the mounting plate and remains on the roof edge.

The disassembly is then carried out in the reverse order.

Since the fixing device has a plurality of fixing mechanisms distributed over the length and spaced apart from one another, it makes sense in the third step to first connect a fixing mechanism located in the central region of the gable securing holder to the edge and thus to attach the gable securing holder to the roof edge. After the person basket has been detached from the gable protection holder, in a further step the person basket is moved to another fixing mechanism on the same gable protection holder, and is connected there to the roof edge at other points.

• 1 einen Hubwagen nach der Erfindung mit eingeklappter Schutzvorrichtung
• 2 den Hubwagen mit ausgeklappter Schutzvorrichtung; und
• 3 Ausschnitt einer Seitenansicht mit an einem Dachsparren platzierter Schutzvorrichtung;
• 4 eine am Gebäude fixierte Schutzvorrichtung; und
• 5 eine lösbare Verbindungsart zwischen Personenkorb und Schutzvorrichtung.

Further advantages and refinements of the invention result from the description of an exemplary embodiment with reference to the figures. Show it:

• 1 a pallet truck according to the invention with the protective device folded
• 2 the pallet truck with the guard extended; and
• 3 Detail of a side view with protective device placed on a rafters;
• 4 a protective device fixed to the building; and
• 5 a detachable connection between the passenger basket and protective device.

In the 1 and 2 is 1 with a lift truck, which is designed as a trailer, which is indicated by an indicated drawbar and wheels. In general, a self-propelled vehicle is also possible. The pallet truck 1 is positioned and has four support stamps 3 that can be moved out to the side and lowered to the ground. This can compensate for uneven terrain and the pallet truck 1 takes a stable stand. An extendable lifting arm construction is mounted on the loading surface or on the side of the pallet truck 1 with two arms 5 ' and 5 ' is symbolized. At the end of the second lifting arm 5 ' is a passenger basket in a manner known per se 6 attached to which in turn a mounting plate 7 is attached. The mounting plate is used to create a detachable connection between the passenger basket 6 and a protection device 9 in the form of a lattice, hereinafter also called the lattice wall 9 called. The protection device 9 is in six parts 9a to 9f articulated, two of which are adjacent via a hinge 11 are interconnected. The sections 9a to 9f are in two groups of three sections each 9a - 9c and 9d - 9f divided over a stable frame construction 10 are interconnected. In the frame construction 10 is a counterpart 12 to the mounting plate 7 involved. Instead of the frame construction 10 a plate can also be used, which is the counterpart 12 forms or serves for its inclusion. In the stretched position shown after the 2 are the sections 9a - 9c and 9d - 9f locked to the adjacent section, so that no folding or folding is possible. The locked position can be achieved via hydraulic stamps (not shown) which also carry out the folding or folding process.

The grid construction includes a lower longitudinal strut 13 , an upper longitudinal strut 15 and between the two longitudinal struts 13 . 15 running diagonal struts 17 , Spatially behind the grid wall 9 can optionally be arranged at a distance of a few cm from a second grid wall (not shown), preferably of the same construction, which is in line with the first grid wall 9 over corresponding, across the two lattice walls 9 extending cross struts is connected. The second grid wall serves to increase stability.

At the bottom of the grid wall 9 is a fixing device 19 firmly with the grid wall 9 connected. The fixing device 19 is used for temporary fastening of the grid wall 9 with the roof edge of a building, for example on its rafters 21 , For this purpose, the fixing device 19 a variety of fixation mechanisms 23 on, which are designed in the illustrated embodiment as a curved leg, of which 2 each form a pair. The curvature of the legs is designed in such a way that, within a certain range of roof pitch, the grating wall is still in a satisfactory vertical position 9 is achieved. One leg of the pair is on the right side of the rafters 21 placed and the other on the left. In this position, they are screw clamps (not shown) with the rafters 21 jammed. The respective fixing mechanisms 23 are along the longitudinal axis of the grid wall 9 Slidably arranged on a rail to adjust their position to different rafter distances.

In the position of the pallet truck after the 2 first the two fixation mechanisms 23 ' and 23 " , which are located on the left or right of the assembly basket with the rafters jammed. This will make the grid wall 9 pinned to the edge of the roof, and those on the passenger basket 6 attached mounting plate 7 can of the counterpart 12 on the grid wall 9 be released. The passenger basket 6 is then used to fix the remaining fixation mechanisms 23 move along the edge of the roof.

In the 4 is the grid wall 9 shown in a fully assembled position on the building roof.

The 5 . 5a and 5b show an example of the mounting plate 7 as the releasable connection to the grid wall 9 can manufacture. The mounting plate points to this 7 two bridges 25 that run towards each other in a V-shape. The bridges 25 have one shoulder at each end 27 that point to each other. This creates a hook-shaped groove that tapers towards the bottom. The counterpart 12 after 5b that firmly with the frame construction 10 is connected, has a hammer head-like part 29 on. The part 29 is also V-shaped in such a way that it fits positively into the webs 25 formed groove can be inserted from above.

The connection is made on the floor by the grid wall 9 with the hammer head-shaped part 29 from above into the bridges 25 is introduced. Shoulders 27 prevent the part from slipping out 29 out of the groove. Loosening the connection after fastening the grid wall 9 on the roof is done by lowering the passenger basket 6 together with the mounting plate firmly attached to it 7 , Removing the grid wall 9 happens through the reverse process: First the passenger basket with its groove from below 25 . 27 for engaging in the hammer head bridge 29 brought, then the two not yet solved fixation mechanisms 5 ' and 5 ' solved, and the passenger basket 6 is together with the lattice wall 9 led away from the building roof.

LIST OF REFERENCE NUMBERS

1

lift trucks

3

support props

5 ', 5 "

poor

6

personnel basket

7

mounting plate

9

grid wall

10

frame construction

9a-9d

Sections of the lattice wall

11

hinge

12

Counterpart mounting plate

13

lower longitudinal strut

15

upper longitudinal strut

17

diagonal strut

19

fixing

21

rafter

23,23 ', 23 "

fixing mechanism

25

web

27

shoulder

29

Hammer head

Claims (4)

Protection device (9) against the fall of a person from a building roof, characterized in that the protection device (9) is plugged onto a mounting plate (7) from above, which is firmly connected to a passenger basket (6) installed on a lifting truck (1) A lowering of the passenger basket (6) results in a loosening of the protective device (9) attached to a roof part (21) from the mounting plate (7). Pallet truck after Claim 1 , characterized in that the protective device comprises a gable securing holder (9) with a fixing device (19) for fixing it to the roof part, in particular to a rafter (21), at least part of the fixing device (19) and the mounting plate (7) can be reached from the passenger basket (6). Procedure for installing the protective device (9) according to Claim 2 on or under an edge of the building roof by means of the lifting carriage (1), with the following successive steps: i) attaching the protective device (9) to the mounting plate (7); ii) moving the passenger basket (6) into a position into which the fixing device (19) lies at least partially on or under the edge of the building roof; iii) connecting the fixing device (19) to the roof edge; and iv) releasing the protective device (9) from the mounting plate (7). Procedure according to Claim 3 , wherein the fixing device (19) has a plurality of fixing mechanisms (23) spaced apart from one another, characterized in that in step iii) a fixing mechanism (23 ', 23 ") lying in the central region of the gable securing holder is first connected to the edge, and after step iv ) the passenger basket (6) is moved to a further fixing mechanism (23), and this is then connected to the edge.

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