US20020185335A1

US20020185335A1 - Safety device

Info

Publication number: US20020185335A1
Application number: US10/164,613
Authority: US
Inventors: Mark Verdyk
Original assignee: Individual
Current assignee: Albuko NV
Priority date: 2001-06-11
Filing date: 2002-06-10
Publication date: 2002-12-12
Also published as: EP1267014A1; BE1014221A3; HK1053158A1

Abstract

Safety device, which is intended for temporarily fastening a person by means of a safety harness (12) and a safety line (11) at a part of a scaffold construction comprising, amongst others, vertical scaffold elements (2) which are provided with flanges (8) with openings (9), characterized in that between the free extremity of said safety line (11) and the scaffold construction (1), a support (10) is provided to which said safety line (11) can be connected.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a safety device, such as it can be applied during mounting works, and more particularly when mounting scaffolds, on one hand, and when working on such scaffolds, on the other hand.

2. Discussion of the Related Art

It is known that scaffolds, more particularly tubular scaffolds, are built up by attaching horizontal tubes between vertical tubes, by means of clamping parts, by sliding into each other or such in order to obtain, together with the application of so-called cross connections, a solid construction upon which one can work in order to erect other constructions, buildings or other elements, and/or to work on said constructions etc., for example, during renovations, repair works etc.

At different heights of such scaffold construction, subsequently working floors are provided on which the scaffold workers and/or the workers working at or on such construction can move.

During the erection of such scaffolds as well as during the use of such scaffolds for erecting, cleaning, repairing etc. adjacent constructions, the scaffold mounting staff and/or workers are obliged to connect themselves to the scaffold by means of a safety harness with a safety line in order to limit, in the case of a fall, such fall to the length of the safety line.

To this aim, the safety harness which encases the worker is fastened to a scaffold element by means of a safety line with a length of, for example, 1 meter, and possibly by means of a hook or the like.

The aforementioned, however, has as a consequence that the worker concerned has a restricted freedom of movement of approximately 1 meter in respect to the fixation point of the safety line, such that, if he wants to move on, he will have to unfasten the safety line and will have to re-fasten it at another location.

SUMMARY OF THE INVENTION

The present invention relates to a safety device whereby the worker is offered a freedom of movement which clearly is larger that it has been possible up to now, but whereby the maximum safety is maintained, in consideration of the fact that the safety line also will have a length of only 1 meter.

When this safety device, for example, has a length of 1 meter, the worker will be able to move at the working floor over a distance with a radius of two meters, seen from the fixation point of the safety device, whereby the safety remains as high as before.

The device according to the invention which shows the aforementioned and other advantages and which is intended for temporarily fastening a person to a part of a scaffold construction by means of a safety harness and a safety line, to this aim substantially consists of a support which is provided between the free extremity of said safety line and the actual scaffold construction to which said safety line is connected.

Preferably, said support will be hingeably connected to the scaffold construction in order to guarantee a maximum movement of the person to be safeguarded.

BRIEF DESCRIPTION OF THE DRAWINGS

With the intention of better showing the characteristics of the invention, hereafter, as an example without any limitative character, a preferred form of embodiment of a safety device according to the invention is described, with reference to the accompanying drawings, wherein: [0013]
FIG. 1 in perspective represents a building scaffold whereby a safety device according to the invention is applied; [0014]
FIG. 2, at a larger scale, represents the part indicated by F[0015] 2 in FIG. 1;
FIG. 3 represents a plan view of FIG. 1, with the indication of the accessible working zones.[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENT

In FIG. 1, a [0017] scaffold 1 is represented which, according to a known embodiment, is constructed of a number of tubular vertical scaffold elements 2 and tubular horizontal scaffold elements 3, of which some vertical scaffold elements 2 are connected to each other by means of cross connections 4, and on which, at certain heights, boards 5 are provided which form a working floor 6.
In this case, the [0018] working floor 6 is bordered by a number of additional horizontal scaffold elements 3 which together form a balustrade 7.
As usual in scaffolding, the [0019] vertical scaffold elements 2, at certain levels, are provided with ring-shaped flanges 8 which are fixed at the vertical scaffold elements at suitable mutual interspaces and whereby a number of openings 9 is provided in these flanges 8.
The [0020] horizontal scaffold elements 3 and the cross connections 4 can be anchored in a known manner in the openings 9 of these flanges 8, by means of complementary fixation means at the extremities of these scaffold elements 3 and cross connections 4.
In the form of embodiment represented in the drawings, the safety device according to the invention comprises a [0021] support 10, formed as a frame to which a safety line 11 of a safety harness 12 of a worker 13 can be fastened, whereby this support 10 is freely pivotable around a vertical pivoting axis X-X.
In this form of embodiment, the [0022] support 10 consists of a round tube 14 which is installed vertically and at which two transversely directed profiles 15 and 16 are fixed, which, for example, are formed by a square tube, whereby these two profiles are connected to each other at their free extremities and whereby the profile 15 preferably will be installed horizontally.
At the height where the two profiles [0023] 15-16 are connected to each other, an eyelet 17 can be fixed at a distance from the pivoting axis X-X in order to allow the fastening of the safety line 11 in a simple manner.
The length of the [0024] round tube 14 is somewhat larger than the core distance of two flanges 8 of one and the same vertical scaffold element 2.
In the [0025] round tube 14, a second round tube 18 is provided in a freely pivotable manner, the extremites of which latter tube protrude from the tube 14 at opposite sides.
At these protruding extremities of the [0026] tube 18, transverse protrusions 19 are provided, the interspace of which is equal to the length of the tube 14.
At the [0027] free extremity 20 of each radial protrusion 19, a downwardly directed vertical pin is fixed, a longer pin 21 at the top and a shorter pin 22 at the bottom, respectively.
The pins [0028] 21-22 are provided in their mutual prolongation and have a cross-section, the shape of which is complementary to the shape of the openings 9 of the flanges 8 of the vertical scaffold elements 2.
The use of the device according to the invention is very simple and as follows. [0029]
When erecting a [0030] scaffold 1, the safety device is provided, with the pins 21-22 directed downward, in the openings 9 of the flanges 8 of a vertical scaffold element 2 protruding above the working floor 6, whereby the difference in length of the pins 21-22 facilitates providing the safety device.
Thus, the [0031] eyelet 17 is at a certain height in respect to the working floor 6, and usually above the head of a worker 13.
As the [0032] worker 13 arrives on the working floor 6 in order to perform works at that location, he fastens the safety line 11 of his safety harness 12 to the eyelet 17 of the safety device, such that he is secured from that moment on, and, with a possible fall, his falling distance will be limited by the length of the safety line 11.
When the [0033] worker 13 moves around on the working floor 6, the support 10 can turn along with his movements, whereby the eyelet 17 can describe a circular arc above the working floor 6.
Thus, the [0034] worker 13 has the advantage of a maximum freedom of movement within a radius 22 around the pivoting axis X-X of the support 10.
The length of this [0035] radius 22 is determined by the length of a smaller radius 23 within which the worker 13 can move around the eyelet 17 of the safety device, enlarged by the distance of the eyelet 17 in respect to the pivoting axis X-X.
As a consequence, when using a safety device according to the invention, the freedom of movement is much larger than with the classical way of falling prevention, whereby the [0036] worker 13, for a same level of falling prevention, will see his freedom of movement restricted to a much smaller radius 24 around a connection point at the location of a vertical scaffold element 2.
Due to the complementary shape of the cross-section of the pins [0037] 21-22 in respect to the openings 9 in the flanges 8, it is prevented that the pins 21-22 pivot in the openings 9, as a result of which they would undergo a wear and tear at the location of these flanges 8 and as a result of which the carrying strength of these pins 21-22 would diminish and, as a consequence, an unsafe situation might be created.
In a particular form of embodiment of the invention, for example, the accidental lifting of the [0038] support 10 out of the openings 9 of the flanges 8 might be prevented by providing an additional safety system, for example, by providing, in one of the pins 21-22, a transverse bore opening in which a removable safety pin, a padlock or such might be provided.
According to another form of embodiment of the invention, the free extremities of the pins [0039] 21-22 can be realized conically, as a result of which the pins 21-22 can be easier directed into the openings 9 of the flanges 8 when mounting the safety device at the scaffold 1.
Although, in the described embodiment an [0040] eyelet 17 is provided for fastening the safety line 11, it is clear that the safety line 11, with one and the same result, can be fastened directly to the support 10, more particularly at the profile 16.
The present invention is in no way limited to the form of embodiment described as an example and represented in the accompanying figures, however, such safety device can be realized in different forms and dimensions, without leaving the scope of the invention. [0041]

Claims

1. A safety device, which is intended for temporarily fastening a person by means of a safety harness and a safety line at a part of a scaffold construction comprising, amongst others, vertical scaffold elements which are provided with flanges with openings, wherein between the free extremity of said safety line and the scaffold construction, a support is provided to which said safety line can be connected.

2. The safety device of claim 1, wherein the support is freely hingeable around a vertical axis X-X.

3. The safety device of claim 1, wherein the support consists of a vertical tube, upon which at least one first transversely directed profile is attached.

4. The safety device of claim 3, wherein the vertical tube is connected to said first transversely directed profile by a second transversely directed profile.

5. The safety device of claim 3, wherein the first transversely directed profile is fixed perpendicularly to an extremity of the vertical tube, whereas the second transversely directed profile is fixed at the second extremity of the vertical tube, on one hand, and at the free extremity of the first transverse profile, on the other hand.

6. The safety device of claim 3, wherein the vertical tube is a round tube which is provided freely pivotable over a second round tube.

7. The safety device of claim 6, wherein at each extremity of the second round tube, a vertical pin is fixed, respectively an upper pin and a lower pin, whereby these pins are situated in each other's prolongation and whereby each pin fits into an opening of a flange of a scaffold element.

8. The safety device of claim 7, wherein each pin is fixed on a protrusion which in its turn is fixed onto the second vertical tube.

9. The safety device of claim 7, wherein each pin has a cross-section which is complementary to the shape of the opening in said flanges.

10. The safety device of claim 7, wherein the free extremities of the pins are realized conically.

11. The safety device of claim 7, wherein the upper pin has a larger length than the length of the lower pin.

12. The safety device of claim 7, wherein in at least one pin, an additional safety element is provided.

13. The safety device of claim 12, wherein at least one of the pins is provided with a transverse bore opening in which a removable safety pin, a padlock or the like can be provided and whereby this safety pin, padlock or the like are fixed at the safety device by means of a chain.

14. The safety device of claim 1, wherein the support, at a distance to the vertical axis X-X, comprises an eyelet.