EP0930407B1 - Arrangement for securing a scaffold-structure - Google Patents

Abstract

The fixing, which is preferably permanent, comprises a fixed member (2) which is attached to a building wall or timber frame component and has a hook-shaped end (8). The hook has at least two apertures set one above the other to receive a connecting peg (4) attached to the scaffolding (3) and inserted from above.

Description

The present invention relates to a fixable device according to the preamble of claim 1 and a scaffolding with such a device.

The invention relates more particularly to devices adapted to receive a scaffolding structure with support of this structure at a point in the construction to prevent the effect of the tilting moment being exerted on said structure, in particular when it is loaded by materials and / or stakeholders in roof.

A mooring or anchoring device intended to receive such a scaffolding structure is particularly described in documents FR-A-2.245.213 and FR-A-2.307.100 of this inventor.

In document FR-A-2.245.213, the anchoring member has a base suitable for being fixed to a rafter and a single hole suitable for receiving a hooking finger of the scaffolding structure. The hole is made on a heel extending said base, heel and base being arranged in the chevron axis. The major disadvantage of such anchoring device lies in the impossibility prevent, by means of such an anchoring device, the tilting of the scaffolding structure by lifting towards the building element. Such tipping can occur in particular in bad weather when a strong wind acts on the scaffolding structure. Likewise, it is not possible, by means of a such anchoring device, to prevent rotation of the scaffolding structure around the axis formed on the one hand by its fulcrum on the building element, secondly by its anchor point on the device anchor. Again, this results in accident risks in strong winds. These same drawbacks apply to the anchoring device described in the patent FR-A-2245213.

In French patent FR-A-2,349,706, various configurations of an anchoring device are shown. In a first embodiment, the device anchor has a base provided with two openings intended to receive a fastening member of a structure scaffolding. This hooking member affects the shape a hook forming an open loop in one direction opposed to construction. The downside of such solution lies first in the difficulty of hanging the scaffolding structure of the fact that the hook of this structure must be fixed by the bottom to anchor after angular orientation precise scaffolding structure, which requires operator dexterity and physical strength. Otherwise, such a solution presents the same risks of lifting the scaffolding structure as those described previously in the context of the patent arrangements FR-A-2.245.213 and FR-A-2,307,100 cited above.

In patent FR-A-1,482,220, a hook is described. safety for gutter able to support a candlestick which constitutes a safeguard. This candlestick intended to be fixed safety hook, does not come to rest on the construction and therefore does not have the benefits inherent in this type of scaffolding structure. Indeed, the candlestick does not have a platform circulation. Furthermore, if this candlestick is pressed of a man or a load, we cause a significant effort on the safety hook generating either a tearing of the latter, or a folding of the latter's body.

Furthermore, the safety hook consists of a manifold terminated by a closed loop so that the cost of such a hook is relatively expensive and the more complicated than the device anchor object of the present invention. Finally, such safety hook structure does not allow a variable angular positioning of the candlestick as a function construction. Such a disadvantage also applies to the device described in patent FR-A-2,728,923.

The purpose of the present invention is therefore to overcome the disadvantages mentioned above by proposing a device for the attachment of a scaffolding structure which prevents, safely, the scaffolding structure of both tilt by lifting towards the element of the construction that carries this structure and turn around a substantially vertical axis passing through the fulcrum of structure on construction and point of attachment of the structure to the device while allowing a possibility of angular positioning variable of the scaffolding structure on the device.

Another object of the present invention is to provide a attachment device for a scaffolding structure, the design allows, for any construction, receiving dimension scaffolding structures variable and whose fulcrum does not necessarily have adjustable positioning due to the possibilities intrinsic adaptation to the hanging device.

Another object of the present invention is to provide a attachment device for a scaffolding structure simple design, compact, low cost adapted to cooperate with a scaffolding structure whose the hooking finger is also simple in design.

To this end, the invention relates to a fixable device, as described in claim 1.

Thanks to this design of the hanging device, everything risk of accident, including in strong winds, is avoided despite a great adaptability of the device with respect to the scaffolding structure to receive or construction to equip.

According to a preferred embodiment of the invention, at minus one of the device hook openings is shaped to prevent, after insertion of a finger for hanging a scaffolding structure inside said opening, the rotation of this latching finger around its longitudinal axis.

The subject of the invention is also a scaffolding. having a structure with at least one latching finger and a device as described above.

la figure 1 représente une vue en perspective d'un dispositif selon l'invention fixé à un élément de construction et sur lequel est accrochée une structure d'échafaudage ;

la figure 2 représente une vue en perspective de la zone de liaison entre dispositif d'accrochage et doigt d'accrochage de la structure d'échafaudage lors de l'introduction du doigt d'accrochage dans une ouverture du dispositif ;

la figure 3 représente une vue en perspective de la zone de liaison entre dispositif d'accrochage et doigt d'accrochage, le doigt étant représenté en position introduite dans les ouvertures du dispositif ;

la figure 4 représente une vue en perspective d'un autre mode de réalisation du dispositif fixé sur un mur ; et

la figure 5 représente une vue en perspective d'un autre mode de réalisation du dispositif.

Le dispositif, objet de l'invention, représenté sous la référence générale 1, est destiné à être fixé à un élément 2 d'une construction 11. Cet élément 2 de construction peut être un mur ou un élément de charpente de ladite construction 11. Dans les exemples de réalisation représentés, l'élément 2 de construction est constitué dans la figure 1 par un chevron et dans la figure 4 par un mur.The invention will be clearly understood on reading the following description of exemplary embodiments, with reference to the appended drawings in which:

Figure 1 shows a perspective view of a device according to the invention fixed to a building element and on which is hung a scaffolding structure;

FIG. 2 represents a perspective view of the connection zone between the attachment device and the attachment finger of the scaffolding structure during the introduction of the attachment finger into an opening of the device;

FIG. 3 represents a perspective view of the connection zone between the attachment device and the attachment finger, the finger being shown in the position inserted into the openings of the device;

Figure 4 shows a perspective view of another embodiment of the device fixed to a wall; and

FIG. 5 represents a perspective view of another embodiment of the device.

The device, object of the invention, represented under the general reference 1, is intended to be fixed to an element 2 of a construction 11. This element 2 of construction can be a wall or a structural element of said construction 11. In the embodiments shown, the construction element 2 is constituted in Figure 1 by a rafter and in Figure 4 by a wall.

To this device 1 is hung a scaffolding structure 3 which may be a structure already known per se of the type of that represented in patent FR-A-2,245,213 or a structure to be created. An example of realization of such structure is shown in figure 1. This structure is made up of at least one upright and two sleepers extending on the same side of said amount. One of sleepers, is at its terminal part, free for attachment to device 1 while the other of sleepers comes, by its free end, into abutment generally on a vertical wall of the construction 11. In the example shown in Figure 1, one of the sleepers, in this case the lower sleeper, comes in support at a point P of construction 11 to prevent the effect of the tilting torque acting on said structure 3, in particular when loaded by materials and / or roofers. The first one crosspiece, in this case the upper crosspiece, comprises meanwhile at its free end a hooking finger 4 extending substantially orthogonally the said crosspiece towards the lower end of the amount of the structure 3. This hooking finger 4 substantially straight is adapted to cooperate with the device 1.

The scaffolding structure 3 allows, in itself known, to delimit a path of circulation of stakeholders, this circulation can be carried out in safe thanks to the presence of a guardrail (not shown) consisting of boards supported by uprights generally fitted with hooks of said structure.

The hanging finger 4 can be carried by a mounted arm telescopically on the upper cross member of said structure 3, this cross member being itself carried by the amount of the structure.

The device 1 consists of a body 7 arranged to be fixed to an element 2 of the construction by suitable fixing means. Variants of realization of this body 7 have been shown in the figures 1 to 5 depending on the construction element 2 on which this body 7 must be fixed. The fixing means can also meanwhile they affect a large number of forms. They can be constituted by simple organs of fixing such as screws, nails or the like, or by more complex anchoring devices such as sockets or other.

This body 7 is provided with a hook 8 affecting the shape of minus one open loop towards element 2 of construction. This hook 8 comprises at least two openings or lights 9, 10 superimposed formed in correspondence and forming a substantially guide path vertical for axial insertion from above, i.e. from the top of the guide path, with your finger attachment 4 of the scaffolding structure 3 to inside said openings 9, 10. As shown in the Figure 1, these openings 9 and 10 prevent the pivoting of the attachment finger 4 of the scaffolding structure 3 in the direction of tilting of the scaffolding structure 3 by lifting towards element 2 of construction. Such a tilt is represented by the arrow F in figure 1. The advantage of such a solution lies in its simplicity. Indeed, the mere fact of having formed two openings 9 and 10 in correspondence allows safely avoid any risk of accident such as set out above.

Furthermore, at least one of the openings 9, 10 of the hook 8 of the device is shaped to prevent rotation of the attachment finger 4 of the structure scaffolding 3 around its longitudinal axis. Indeed, as shown in Figures 3 and 4, the catching finger consisting of a simple plate has a thickness such that when introduced inside the lower opening 10 of the hook 8, it can no longer be rotated around its longitudinal axis, the edges of the opening 10 enclosing the plate constituting the attachment finger 4.

Finally, the openings 9, 10 are shaped so that that the upper opening 9 is delimited by a section closed while the lower opening 10 is delimited by an open section towards the construction 11., so as to allow, when moving in the direction F 'of the scaffolding structure corresponding to a opposite direction of tilting of the scaffolding structure 3 by lifting towards element 2 of construction, freedom of movement of the finger 4. This freedom of movement of the finger attachment 4 is necessary for the support of the scaffolding structure 3 on construction 11 in especially when this scaffolding structure 3 does not has no means for adjusting its fulcrum on construction 11. Such realization of openings therefore allows the use of the attachment device 1 for scaffolding structures and constructions of varied design without complicating the design of this device 1.

At least one of the openings 9, 10 of the hook 8 of the device 1 is of length greater than the section of the attachment finger 4 of the scaffolding structure for allow, after introduction of the hooking finger 4 to inside one of the openings 9, 10, a translation of finger 4 inside this opening following a direction orthogonal to the axis of insertion of the finger in said opening and in the direction of a removal of the finger 4 of building element 2. In the examples shown in Figures 3 and 4, the upper opening 9 of the hook 8 is longer than the section of the finger attachment 4. This opening 9 comprises at least one enlarged portion 9A for the passage of a bulge 5 or of a latching finger boss 4. This enlarged portion 9A is formed in said opening 9 at a location allowing, once the catching finger 4 inserted and translated into said opening 9, an axial offset between the bulge 5 of the catching finger 4 and the portion enlarged 9A of said opening 9 so as to prevent any untimely exit from the catching finger 4 of said opening 9. However, to perfect the security of such attachment, the attachment finger 4 of the structure scaffolding 3 may also include at least one bore 6 for the passage of an organ (not shown), such as a pin, for locking the locking finger 4 to the interior of said openings 9, 10 of the hook 8 of the device 1. This hole 6 is more particularly shown in Figure 3. The pin, in position locked, extends orthogonally to the guide path formed by and between the openings 9 and 10. he it should be noted that these arrangements of the attachment finger 4, comprising at least one bore 6 and a bulge 5, make the scaffolding structure, intended to cooperate with the hanging device, new.

In the examples shown in Figures 1 to 5, the opening 9 of the hook 8 of length greater than the section of the attachment finger 4 of the structure scaffolding 3 substantially affects the shape of a double lock. However, other embodiments of this opening 9 can be envisaged.

Similarly, in all the examples shown, the hook 8 of device 1 substantially affects the shape of a C to concavity turned towards the construction element 2. The upper branch 8A of C is arranged substantially in the extension of the body 7 of the device 1 while the lower branch 8B of C has a terminal end free. The openings 9, 10 of the hook 8 are formed, in correspondence, respectively in the upper branch 8A and the lower branch 8B of the hook 8, the opening 10 of the lower branch 8B being directed towards the element 2 of construction. Therefore, the free end of the lower leg 88 of hook 8 substantially affects the shaped like a fork, the space left free between said branches of the fork constituting the opening 10.

Obviously, it is possible to modify the form of realization of this hook 8. Thus, the connection zone between the lower and upper branches of the hook is here shown as a curved portion. However, this portion could, equivalently, be a straight portion.

Thanks to such a hanging device and in particular thanks to the design of the hook 8 of this device, everything risk of tipping in the direction of arrow F in accordance with Figure 1 and any risk of entrainment in rotation of the scaffolding structure 3 about an axis substantially vertical passing through its fulcrum P on the construction and its point of attachment to the device is prevented despite a possibility of freedom of movement of the attachment finger for the necessary scaffolding structure when this structure is supported during its attachment to the device. Such a device therefore limits importantly the risk of accident without complicating neither the realization of the device, nor the realization of the scaffolding structure intended to cooperate with this latest.

In practice, at least two attachment devices 1 according to the invention are positioned and fixed on elements of construction. The scaffolding structure 3, previously at least partially mounted, is then hung on said devices thanks to the hanging pins 4 carried by the arms forming crosspieces of said structure, as as shown in figure 1. Once the scaffolding structure positioned, it is then possible to arrange the elements complementary such as railing elements, elements floor, etc. The scaffolding structure is at this moment ready to receive a speaker and / or charges.

Claims (10)

1. Device (1), preferably of a permanent type, which is securable to an element (2), such as a framework element or a wall, of a construction (11) for attaching a scaffolding structure (3), with this structure (3) being supported at one point (P) at least of the construction (11) to prevent the effect of the oscillation torque being exerted on said structure (3), in particular when it is loaded with materials and/or roof operatives, this structure (3) possessing at least one hooking member (4) adapted to co-operate with the device (1), the device (1) being made up of a body (7), suitable for being secured to the construction element (2), this body (7) being provided with a hook (8) which takes the form of at least one loop which is open in the direction towards the construction element (2), this hook (8) comprising at least two superimposed openings (9, 10) which form a substantially vertical guide path for the axial introduction, from above, of the hooking member (4) of the scaffolding structure (3) into said openings (9, 10), the upper opening (9) being defined by a closed cross-section, characterised in that the lower opening (10) is defined by a cross-section which is open in the direction towards the construction (11), said openings (9, 10) co-operating with each other to prevent the hooking member (4) of the scaffolding structure (3) from pivoting in the direction (F) of an oscillation of the scaffolding structure (3) by its rising towards the construction element (2) and to permit, in the opposite direction (F'), a freedom of movement for the hooking member (4) which is necessary for supporting the scaffolding structure (3) on the construction (11).
2. Device according to claim 1, characterised in that at least one of the openings (9, 10) of the hook (8) of the device is shaped to prevent a hooking member (4) of a scaffolding structure (3) from rotating about its longitudinal axis after this hooking member (4) is introduced into said opening.
3. Device according to one of claims 1 and 2, characterised in that at least one of the openings (9, 10) of the hook (8) of the device (1) is of greater length than the cross-section of the hooking member (4) intended to co-operate with the device so as to permit, after the introduction of the hooking member (4) into said opening (9, 10), a movement of the member (4) inside said opening (9, 10) in a direction orthogonal to the axis of introduction of the member into said opening, and in the direction of a movement of the member (4) away from the construction element (2).
4. Device according to claim 3, characterised in that the opening (9) of the hook (8) of a greater dimension than the cross-section of the hooking member (4) of the scaffolding structure (3) comprises at least one widened portion (9A) for a bulge (5) of the hooking member (4) to pass therethrough, this widened portion (9A) being provided in said opening (9) at a location which permits, once the hooking member (4) is introduced and displaced in said opening (9), an axial displacement between bulge (5) of the hooking member (4) and widened portion (9A) of said opening (9), so as to prevent any untimely emergence of the hooking member (4) from said opening (9).
5. Device according to one of claims 3 and 4, characterised in that the opening (9) of the hook (8) of a greater dimension than the cross-section of the hooking member (4) of the scaffolding structure (3) is substantially in the form of a double lock hole.
6. Device (1) according to one of claims 1 to 5, characterised in that the hook (8) has substantially the configuration of a C, with the concave portion turned towards the construction element (2), the upper arm (8A) of the C being disposed in the extension of the body (7) of the device (1), while the lower arm (8B) of the C has a free terminal end.
7. Device according to claim 6, characterised in that the openings (9, 10) of the hook (8) are provided in correlation, respectively in the lower arm (8B) and the upper arm (8A) of the hook (8), the opening (10) of the lower arm (8B) being open in the direction towards the construction element (2).
8. Scaffolding, having a structure with at least one hooking member (4) and a device (1) according to one of claims 1 to 7, the structure (3) being able to hook onto said device (1).
9. Scaffolding according to claim 8, characterised in that the hooking member (4) of the scaffolding structure (3) comprises at least one pierced hole (6) for the passage of a member, such as a key, for locking the hooking member (4) inside said openings (9, 10) of the hook (8) of the device (1).
10. Scaffolding according to one of claims 8 and 9, characterised in that the hooking member (4) of the scaffolding structure (3) comprises at least one bulge (5), and in that at least one of the openings of the device (1) comprises at least one widened portion (9A) for the bulge (5) to pass therethrough, this widened portion (9A) being provided in said opening (9) of the device at a location which permits, once the hooking member (4) is introduced and displaced in said opening (9), an axial displacement between bulge (5) of the hooking member (4) and widened portion (9A) of said opening (9), so as to prevent any untimely emergence of the hooking member (4) from said opening (9).

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