FR2510164A1 - Building construction staging for foldable brackets - has two part strut with joint sleeve taking diagonal brace - Google Patents

Abstract

The staging has a deck supported by two beams mounted on vertical triangular brackets. Each bracket can be folded in a plane perpendicular to the beams to be housed within the thickness of the staging. On the fixed horizontal part of each bracket (9,10,11,12), the riser is articulated at the front (46,47) and the strut (28,42) to the rear. The strut is in two distinct parts (28,42) articulating between them. The bottom part (42) is articulated to the base of the risers (46,47), while a connecting rod (32) joins the strut and a sheath (60) covers the strut and takes a diagonal brace (56).

Description

 The present invention relates to removable gangways, called gable, used in the building, especially during construction.

 It is known that these walkways consist of a plate placed on a flat support determined by an appropriate frame, comprising at least one console placed under it, and most often with a console at each end. Although the flat support has, conventionally, the shape of a rectangle, it can also have any other shape, in particular that of a horizontal "U", the bottom of the being being applied (at the front) against the building wall. For reasons of robustness, the horizontal part of the frame, which constitutes the support of the tray, has a significant thickness. In addition, each console is generally constituted by a horizontal element (perpendicular to the wall after installation of the gangway), a vertical upright directed downwards, fixed to the front of the horizontal element (upright applied along the wall after installation of the gangway>, a strut joining the lower end of the upright to the rear end of the horizontal element.

 These gangways, with their consoles, are bulky, which poses problems of storage and transport. We have already tried to remedy these drawbacks by making gangways with removable and / or partially retractable brackets, but in this case, the time necessary for their installation increases the costs without giving complete satisfaction.

 To overcome these drawbacks, the inventor has developed a walkway comprising a frame with consoles secured to the tray support, characterized in that each console is foldable in its own plane, that is to say foldable in a plane perpendicular to that of the wall when it is in use. In the case of a rec tangular gangway, the consoles 8 are folded in planes perpendicular to the long sides. Advantageously, the horizontal console element constitutes the small side of the rectangle.

This folding makes it possible to accommodate the console in the very thickness of the support for the tray, or immediately under it, thereby reducing (without disassembly) the size of the entire gangway out of service to that of the support.

 According to the invention on the horizontal fixed part of each console are articulated the upright (at the front) and the strut (at the rear) formed of two parts hinged together, the base of the lower part being itself articulated at the base of the upright. The two parts of the strut are joined together by a link, and a sleeve can slide on the upper part of the strut and the link joint to a stop-provided on the lower part, so to make the joint usable, or on the contrary block it at will, the sheath also being ear carrier between which is articulated the lower end of a bracon whose other end is articulated on the amount of the console .According to the invention the horizontal part of the console is constituted by four parallel beams leaving a space between them, in particular a vertical space for the accommodation of the two parts of the strut, the bracon and possibly the upright.

 The consoles being folded, the gangways appear like corpus of parallelepipeds which are easily stored and transportable. The brackets are then completely retracted in the thickness of the tray support.

Thus the gable gateway, formwork support, self-packaging, is supplied fully equipped with consoles, safety devices, and can very quickly be put into service, or on the contrary be removed and stored, without dismantling.

 For commissioning, simply remove a safety stud, the movement of the consoles is then carried out automatically when the bridge is raised using a crane, the elements of the console taking themselves the desired triangular arrangement. Then, all you have to do is lock the device before use.

To make the invention easier to understand, an exemplary embodiment is given below in which
Fig. 1 is an overall perspective view of the gangway, suspended from the hook of a crane,
Fig. 2 is an exploded view of a console,
Fig. 3 is a partial view of a closed console,
Fig. 4 and 5 are schematic views of the console in the open position and in the closed position.

 The bridge consists essentially of at least one longitudinal beam 1, and preferably two beams, provided at its ends with brackets 2 and 3, and on which the plate 4 rests. On the bridge itself, various accessories can be fixed, in particular the protective panel 5.

 Fig. 1 represents a gateway during its installation.

 The plate 4 being formed of elements, those of the ends are raised to give access to the lifting rings such as 6, 6 ', 7, 7' connected by ropes to the hook 8 of the crane.

 Fig. 2 clearly shows the design of a console according to the invention. The upper horizontal part of this console consists essentially, on the one hand, of the "U" irons 9 and 10, and on the other hand, the "U" irons il and 12, suitably spaced apart, and joined together at the appropriate places by spacers such as 13. At the upper rear end (right of FIG. 4) it can be seen that the "U" irons 9 and 10 are joined by a plate 14, and that the "U" irons "it and 12 are joined by a plate 15, these two plates enclosing a tube 16 used as a housing for a support-tube of protective panel 5. At the other end of this horizontal part, there are two" L "irons 17 and lô vertical joined by sections 19, 20 of rectangular section tube. The space between the "L" bars 17 and 10 is the same as that between the "U" bars, 9 and 11, and 10, 12. Two vertical sections are fixed near the right split edge. 22 and 23 externally to the horizontal "U" irons 9 to 12. The various vertical profiles 17, 18, 22, 23 slightly protrude downwards the horizontal "U" irons 10 and 12. Noticeably at the level of the profiles 22 and 23 are fixed vertically two plates 24 and 25 drilled in 24 ', 25' for the passage of an axis 26. On this axis 26, between the plates 24 and 25 can pivot a strut with multiple elements.

The upper element 27 drilled in 27 'for the passage of the axis 26, allows the articulation of the profiles 27, 28 (here of square section) extended by two legs 29 and 30 drilled in 31 for the passage of an axis 34. Between the legs is housed a link 32 pierced at 33 for the passage of this same axis 34. Symmetrically the link 32 is pierced at 35 for the passage of the axis 36 passing through the holes 37 of the legs 38 and 39 integral with the lower part 40, 42 of the strut. The latter is produced in the same profiles as the upper part 27, 28 and comprises a part 40 separated by a sleeve 41 from the main part 42, it is integral with the sleeve 43 drilled at 44 for the passage of an axis 49.

 The amount of the console comprises a foot 45 on which are fixed two irons "U" 46, 47, turning the back, and perforated in 48 near the lower part for the passage of the axis 49. The two irons in a "U" shape 46, 47 are sufficiently spaced that the elements of the strut 28 to 43 can be possibly and partially housed in this space. At their upper part, the two "U" irons 46, 47 are joined by the spacer 50, and they are each provided with a lug 31- or 52 pierced in 512 and 52 'for the passage of an axis 53. Depending on the model, the legs can be straight and articulated on the profiles 17, 18, or at right angles and articulated on the spacer 20. On this axis 53, between the legs 51, 52, can journal the sleeve 54, drilled in 34 ' , 9 secured to the container 56 of rectangular section, perforated at its other end at 56 ′ for the passage of an axis 59, making it possible to pivot between the two ears 57, 58 secured to a sheath 60 sliding on the strut between the fixed sleeves 27 and 41.

 Referring to Figs. 4 and 5 you can easily follow the folding operations of the console. First of all, the pin 55 is removed and the bottle 56 is dropped according to the arrow F1. It is then housed between the profiles 46, 47 of the upright. We go up the sleeve 60 according to the arrow F2, we bend the strut according to the arrows F3 and F4 simultaneously causing the pivoting of the upright 46, 47 according to the arrow F5, we thus go up this upright under the irons in " U "10 and 12 between the wings 22, 23 of the vertical sections allowing locking by any known means, in particular using a pin 23 'and a chain (not shown). After folding, all of the folding elements of each console is retracted in the thickness of the horizontal element and practically in the very thickness of the gangway, without risk of inadvertent deployment.

 It should be emphasized that in the open position, during use, the sleeve 60 prevents any deformation of the strut and of the console.

 Thus the gangway can be moved, whether its brackets are in the open or closed position, and without risk of changing their position during lifting and transfer.

 The consoles being in the closed position, to put them in the position of use, it suffices to remove a retaining pin such as 23 '(or to maneuver any other means) and to lift the whole of the gangway so that the consoles are deploy under the effect of their own weight.

The gangway being in place and the consoles deployed, the sleeve 60 is lowered by its own weight to the stop 41, thus blocking the strut in the position of use. To consolidate the assembly, the brace 56 is raised, and the pin 59 is placed to fix this bracon 56 between the ears 57, 58 of the sleeve 60.

Claims (7)

 1. Gangway for building comprising a plate supported by two longitudinal beams mounted on vertical triangular brackets, characterized in that each console (2 or 3) is foldable in a plane substantially perpendicular to the beams, so that it can be housed in the thickness of the gangway or immediately below it and, for this purpose, on the horizontal fixed part of each console is articulated the upright (46, 47), at the front, and the strut, at the rear, formed of two parts (28, 42) articulated together, the base of the lower part (42) being itself articulated at the base of the upright (46, 47)  2.Gateway according to claim 1, characterized in that the two parts (28, 42) of the strut are joined together by a link (32), and that a sleeve (60) can slide on the part- upper (28) of the strut and the articulation (34, 32, 36) up to a stop (41) provided on the lower part (42), so as to make the articulation usable, or on the contrary the lock at will, the sheath (60) being also ear carrier (57, 58) between which is articulated the end of a bracon (56) whose other end is articulated on the upright (46, 47) .  3. P asse relle according to claims 2 or 3, characterized in that the horizontal part of the console is constituted by four beams or profiles (9 to 12) para lèles leaving between them a vertical space for the housing of the two parts ( 28, 42) of the strut.  4. Gangway according to any one of the preceding claims, characterized in that the upright consists of two sections (46, 47) spaced so as to determine a housing for the container (56) in the folded position.  5. Gangway according to claims 3 and 4, characterized in that in the folded position, the profiles (46, 47) of the upright are placed under the profiles (10, 12) of the horizontal console element.  6. Gateway according to any one of the preceding claims, characterized in that the horizontal element of each console is externally provided with vertical profiles (17, 18, 22, 23) projecting downward, at least the thickness of the folding console upright.  7. gangway according to claim 3, characterized in that at the rear end of the vertical space reserved in the horizontal element of a console, there is fixed a section (16) of tube used for fixing accessories such as protective panel (5).