Device for fixing a stop and method for installing and mounting a foot stop using such a device

Abstract

The invention provides a device (10) for fixing one end (14) of a shoring element called a buttress (16), comprising: - a mounting plate (18) adapted to be fixed to a wall to be shored and from which the buttress (16) extends in a plane orthogonal to the mounting plate (18); - and a buttress plate (12) arranged at the end (14) of the buttress (16) and adapted to be fixed against the mounting plate (18), characterized in that it comprises attachment and articulation means (28) allowing successively: - the positioning of the buttress plate (12) on the mounting plate (18) in a first angular position, called the attachment position; - then the pivoting of the buttress plate (12) relative to the mounting plate (18) towards a second angular position, called the support position, in which the plate of The button (12) rests against the mounting plate (18). Figure from the abstract: Fig. 1

Description

Title of the invention: Device for fixing a stopper and method for installing and mounting a foot stopper using such a device Technical field of the invention

[0001] The invention relates to a device for fixing one end of an elongated structural propping element called a butt.

[0002] The invention also relates to a method of setting up and mounting a foot butt for shoring up a portion of a vertical wall by means of such a fixing device. Technical background of the invention

[0003] A buttress is a structural element used in Building and Public Works (BTP) which allows walls or wall elements to be retained.

[0004] The butt is a shoring element generally made of metal, which is arranged horizontally or inclined, generally compressed, which is particularly used in excavation shoring and temporary supports in the field of foundations.

[0005] When the butt is used to retain a wall or a wall element of vertical orientation, for example to laterally delimit an excavation, it is called a "foot butt".

[0006] The foot butt is thus an elongated structural element which extends downwards in a transverse plane orthogonal to the plane of the portion of wall to be supported.

[0007] The foot stop includes in particular an upper end which must be fixed in support against the portion of wall and a lower end which is immobilized in relation to the ground or to a structure designed for this purpose.

[0008] For this purpose, it is known to equip the upper end of the butt with a butt plate which bears against said portion of wall to which it is fixed by "screw-nut" assemblies comprising horizontal tie rods sealed in the wall which pass through corresponding holes in the butt plate.

[0009] The button extends transversely and downwards, for example by forming an angle of forty-five degrees.

[0010] Given the large dimensions and significant mass of the struts commonly used in construction, the placement, assembly and fixing of each strut are complex operations to carry out, requiring in particular to position the strut precisely and to hold it until the end of the fixing operations by screwing.

[0011] The invention aims to remedy these problems by proposing a new design of the means for mounting and fixing a buttress end, as well as an associated method for setting up and mounting a foot buttress. Summary of the invention

[0012] The invention proposes a device for fixing one end of an elongated structural shoring element called a buttress, comprising: - a mounting plate suitable for being fixed on a portion of wall to be supported and from which the buttress extends (in a transverse plane orthogonal to the plane of the mounting plate); - and a butt plate arranged at one end of the butt and suitable for being fixed against the mounting plate, characterized in that it includes means of attachment and articulation allowing successively: - the positioning of the button plate on the mounting plate in a first angular position, called the hooking position; - then the pivoting of the butt plate relative to the mounting plate towards a second angular position, called the support position, in which the butt plate is supported against the mounting plate.

[0013] According to other characteristics of the fastening device: - the pivot axis of the button plate is a horizontal axis in the direction of Earth's gravity; - the butt plate includes a hooking and articulation rod; and the mounting plate includes an open notch, the bottom of which is shaped to house at least partially said rod and allow its pivoting between the first angular hooking position and the second angular support position; - the notch is open vertically upwards to allow the top-to-bottom insertion of said rod into the notch of the mounting plate; - the open notch has a guide profile for the rod towards the bottom of the notch; - in the fixed position of the mounting plate on the portion of the wall, the notch is delimited transversely by a part opposite the portion of the wall; - the butt plate includes a support element which, in the angular support position, cooperates with a complementary portion of the mounting plate.

[0014] The invention also proposes a method for setting up and mounting a foot butt for shoring up a portion of a vertical wall by means of a device according to the invention, characterized in that it comprises the following steps consisting of: - El) Fixing the mounting plate on the portion of the wall and fixing the butt plate to said end of the butt; - E2) Position the stopper to bring the stopper plate in line with the mounting plate by positioning it in the angular position for attachment; - E3) Rotate the stop and the stop plate until they reach their angular support position.

[0015] According to other features of the method: - step E2) of positioning the button consists of housing at least partially said rod in the bottom of the notch; - when the butt plate is in its angular support position, the butt extends in equilibrium downwards with its other end cantilevered over a ground excavation; and the method includes an additional step E4) consisting of immobilizing said other end by creating a concrete mass in which it is embedded. Brief description of the Figures

[0016] [Fig.1] - [Fig.1] is a perspective view which represents an upper end of a foot stop and a first example of an embodiment of a fixing device according to the invention which is illustrated in the angular position of support of the foot plate against the mounting plate;

[0017] [Fig.2] - [Fig.2] is a view analogous to that of [Fig.1], from another angle of perspective, on which the fixing device is illustrated in the angular position of the butt plate being attached to the mounting plate;

[0018] [Fig.3] - [Fig.3] is a detailed perspective view of the mounting plate of the fastening device shown in figures 1 and 2;

[0019] [Fig.4] - [Fig.4] is a detailed perspective view of the button plate of the fastening device shown in figures 1 and 2;

[0020] Figures 5A [Fig.5A], 5B [Fig.5B] and 5C [Fig.5C] are three schematic side views which represent the butt plate of the fixing device shown in Figures 1 and 2 successively in approach position, then in hooked position, then in support position relative to the mounting plate;

[0021] Figures 6A [Fig.6A], 6B [Fig.6B], 6C [Fig.6C] and 6D [Fig.6D] are three schematic partial section views by a vertical plane which represent four successive stages of an example of setting up and mounting a foot brace for shoring up a portion of a vertical wall by means of a fixing device shown in Figures 1 to 4;

[0022] [Fig.7] - [Fig.7] is a view analogous to that of [Fig.1], which represents a second example of the implementation of a fastening device according to the invention;

[0023] [Fig.8] - [Fig.8] is an exploded perspective view of the mounting plate and the butt plate of the fixing device shown in [Fig.7];

[0024] [Fig.9] - [Fig.9] is a detailed side view which schematically represents the hook and hinge rod of the butt plate of the fixing device shown in [Fig.7] which is illustrated in position in the bottom of the notch of the mounting plate. Detailed description of the figures

[0025] For the description of the invention and the understanding of the claims, with reference to terrestrial gravity and without limitation, the vertical, longitudinal and transverse orientations will be adopted according to the V, L, T frame indicated in the figures, whose longitudinal L and transverse T axes extend in a horizontal plane.

[0026] By convention, the transverse axis T extends from front to back.

[0027] In the description that follows, identical, similar or analogous elements will be designated by the same reference numerals.

[0028] Figures 1 and 2 show in particular a device 10 according to the invention for mounting and fixing a butt plate 12, here arranged at the upper front end 14 of a foot butt 16, on a mounting plate 18.

[0029] By way of non-limitation, the butt plate 12 and the mounting plate 18 each have a design symmetry with respect to a median vertical and transverse plane.

[0030] The upper end 14 is here fixed, for example by welding, to a rectangular butt plate 20.

[0031] According to a design known in the prior art mentioned above, this butt plate 20 is suitable for being fixed directly onto a portion of the opposite vertical wall.

[0032] According to the invention, the button plate 20 is fixed by four screw-nut links 22 on the rear face 23 of a similar rectangular rear plate 24 belonging to the button plate 12 according to the invention.

[0033] On its front face 25, the rear plate 24 is provided with two parallel vertical and transverse wings 26 which extend towards the rear.

[0034] Between its two wings 26, the button plate 12 has two parallel longitudinal rods, an upper rod 28 and a lower rod 30 which is offset downwards and backwards relative to the upper rod 28.

[0035] The upper rod 28 is a hooking and articulation rod of the butt plate 12 on the mounting plate 18, while the lower rod 30 is a support rod which, in the angular support position illustrated in particular in figures 1 and 5C, is in support against a corresponding part 54 of the mounting plate 18.

[0036] The butt plate 12 is thus formed into a mounting bracket suitable for being hung on the mounting bracket 18.

[0037] For this purpose, the bedding screed 18 includes a rectangular front plate 32, each of whose four corners has a light 36 to allow, as can be seen in [Fig.1], its fixing to a portion 100 of a wall P by means of tie rods 38 sealed in the wall P and nuts 40.

[0038] On its rear face 33, the front plate 32 is provided with two parallel vertical and transverse wings 42 which extend forward.

[0039] The two wings 42 are spaced longitudinally apart from each other so that they can be received longitudinally between the opposite internal faces 27 of the wings 26 of the button plate 12.

[0040] As can be seen in figures 2 and 3, in its upper edge 44, each wing 42 has an upper notch 46 and, in its front vertical edge 50, it has a lower notch 52.

[0041] The upper notch 46 is an insertion and hooking notch which is suitable for receiving the hooking and articulation rod 28 of the button plate 12.

[0042] For this purpose, the upper notch 46 has an "L" profile with a vertical entry section 45 which extends rearward by a horizontal blind section 47 delimited by a semi-circular bottom 48 suitable for receiving rotationally the hook and articulation rod 28 of the button plate 12.

[0043] The lower notch 52 is here a horizontal notch open towards the front and delimited towards the rear by a semi-circular bottom 54 which is suitable to receive in support and as a stop the lower rod 30 of the butt plate 12.

[0044] The cooperation of the butt plates 12 and the mounting plate 18 of the fixing device 10 associated with a foot butt is schematically illustrated in figures 5A to 5C.

[0045] In the approach position of [Fig.5A], the butt plate 12 is positioned vertically above the mounting plate 12 with the hook and articulation rod 28 above and opposite the upper notch 46 and with the butt 16 substantially horizontal.

[0046] In the hooking and articulation position of [Fig.5B], the hooking and articulation rod 28 is housed in the bottom 48 of the upper notch 46 and the stop has pivoted angularly clockwise around a horizontal axis A corresponding substantially to the geometric axis of the semi-circular bottom 48 of the notch 46.

[0047] The relative positioning of the upper notches 46 and lower notches 52 is such that the support rod 30 is opposite the entrance of the lower notch 52.

[0048] In [Fig.5C], the device 10 is in its angular support position in which, by means of the lower support rod and stop 30 in angular support against the bottom 54 of the lower notch 52, the button plate 12 is in support against the mounting plate 18.

[0049] In this last position the butt 16 extends transversely downwards according to its mounting orientation which is here on the order of forty-five degrees with respect to the horizontal.

[0050] The design according to the invention of the fastening device 10 which has just been described allows, by way of non-limiting example, the implementation of a method of setting up and mounting a foot butt for shoring up a portion of a vertical wall which is illustrated in figures 6A to 6D.

[0051] This process includes a first step El) consisting, on the one hand and as illustrated in [Fig.6A], of an operator OP fixing the mounting plate 18 on the portion 100 of a wall P which is here a portion of the wall of a pile driven into the ground S.

[0052] On the other hand, the first step El) also consists of fixing the button plate 12 to the end 14 of the button 16, on the rear plate 20.

[0053] The second step E2) of the process, illustrated in [Fig.6B], consists for the operator OP, here using a handling device such as an excavator 102, to position the butt 16 substantially horizontally in height with its end 14 equipped with the butt plate 12 positioned as schematically illustrated in [Fig.5B] in the angular position of attachment.

[0054] Then, in a third step E3), the operator OP engages the butt plate 12 in the mounting plate 18 as schematically illustrated in [Fig.5B] and then, as illustrated in [Fig.5C], he gradually rotates the butt 16 around the axis A until he reaches the relative angular position of the butt plates 12 and mounting plate 18 illustrated in figures 5C and 6C in which the butt 16 and the butt plate 12 are in their angular support position.

[0055] In this last position, by the effect of gravity, the butt 16 is fixed and positioned in equilibrium with its lower end 15 cantilevered over a recess in the ground previously made in the form of an excavation 104.

[0056] As illustrated in [Fig.6D], the process can be completed by an additional fourth step E4) which consists for the operator OP in immobilizing the lower end 15 of the butt 16 by pouring, in the bottom of the excavation 104, a concrete mass 106 in which the end is embedded.

[0057] The second embodiment of the fastening device 10 will now be described with reference to Figures 7 to 9, on which identical, analogous or similar elements and components and / or those performing the same functions will be designated by the same references as those used for the description of the first embodiment and the implementation example with reference to Figures 1 to 6C.

[0058] This description will be made essentially by comparison with that of the first embodiment example.

[0059] The button plate 12 has a rear plate 24 which is fixed directly to the free end 14 of the button 16 and whose front face 25 is here smooth.

[0060] The plate 24 is delimited by a horizontal upper edge 21 on which is fixed, for example by welding, a horizontal upper rod 28 for attachment and articulation.

[0061] The hooking and articulation rod 28 extends longitudinally on either side of the vertical edges of the plate 24 so as to constitute two opposing sections for hooking and articulating the butt plate on the mounting plate.

[0062] At its lower end, on its front face 25, the plate 24 is provided with a heel or cleat 29 which, in the angular support position illustrated in [Fig.7], is wedged under the lower horizontal edge 31 of the plate 32 of the mounting plate 18.

[0063] To house the hinged rod 28, the front rectangular plate 32 again has two parallel vertical wings 42, each of which extends vertically upwards beyond the upper horizontal edge 43 of the plate 32.

[0064] As can be seen in particular in [Fig.9], with a portion opposite the wall P, each wing 42 delimits a notch 46 which is open vertically upwards and is delimited vertically downwards by a horizontal bottom 48.

[0065] The inner edge of the notch 46 is shaped into a profile 51 for progressively guiding the associated section of the rod 28 towards the bottom 48.

[0066] The operation of this second embodiment of the device 10 and its implementation for a method of positioning and mounting an inclined butt 16 are identical to what has been described previously with reference to the first embodiment.

Claims

Demands

1. Device (10) for fixing one end (14) of an elongated structural shoring element called a strut (16) comprising: - a mounting plate (18) adapted to be fixed on a portion (100) of wall (P) to be shored and from which the strut (16) extends in a transverse plane orthogonal to the plane of the mounting plate (18); - and a strut plate (12) arranged to said one end (14) of the strut (16) and adapted to be fixed in support against the mounting plate (18), characterized in that it comprises hooking and articulation means (28, 46) allowing successively: - the positioning of the strut plate (12) on the mounting plate (18) in a first angular position, called the hooking position; - then the pivoting of the butt plate (12) relative to the mounting plate (18) towards a second angular position, called the support position, in which the butt plate (12) is supported against the mounting plate (18).

2. Device (10) according to claim 1, characterized in that the pivot axis (A) of the button plate (12) is a horizontal axis.

3. Device (10) according to any one of the preceding claims characterized in that: - the butt plate (12) comprises a hooking and articulation rod (28); - and the mounting plate (18) comprises an open notch (46) of which a bottom (48) is shaped to house at least partially said rod (28) and allow its pivoting between the first angular hooking position and the second angular support position.

4. Device (10) according to claim 3 in combination with claim 2, characterized in that the notch (46) is open vertically upwards to permit the introduction from top to bottom of said rod (28) into the notch (46) of the mounting plate (18).

5. Device (10) according to any one of claims 3 or 4, characterized in that the open notch (46) has a profile (45, 47) for guiding said rod (28) towards the bottom (48) of the notch (46).

6. Device (10) according to claim 3, characterized in that, in the fixed position of the mounting plate (18) on the portion of wall (100), the notch (46) is delimited transversely by a part opposite the portion (100) of wall (P).

7. Device (10) according to any one of claims 3 or 4, characterized in that the butt plate (12) comprises a support element (30, 23) which, in the angular support position, cooperates with a complementary portion (54, 33) of the mounting plate (18).

8. Method of installing and mounting a foot strut (16) for shoring a portion (100) of a vertical wall (P) by means of a device (10) according to any one of the preceding claims, characterized in that it comprises the following steps consisting of: - E1) Fixing the mounting plate (18) on the portion (100) of wall (P) and fixing the strut plate (12) to said end (14) of the strut (16); - E2) Positioning the strut (16) to bring the strut plate (12) opposite the mounting plate (18) by positioning it in the angular position of attachment; - E3) Rotating the strut (16) and the strut plate (12) until it reaches its angular support position.

9. A method according to the preceding claim implementing a device (10) according to claims 3 and 4, characterized in that said step E2) of positioning the button (16) consists of housing at least partially said rod (30) in the bottom (48) of the notch (46).

10. A method according to the preceding claim, characterized in that: - when the butt plate (12) is in its angular support position, the butt (16) extends in equilibrium downwards with its other end (15) cantilevered over an excavation (104) in the ground (S); - and in that the method comprises an additional step E4) consisting of immobilizing said other end (15) by creating a concrete block (104) in which it is embedded.

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