FR2969194A1 - Railing for elevated safe work structure e.g. scaffolding type work structure, used in construction site, has attachment member presenting configuration in which zone is open toward ground to cap top of railing by scale bar - Google Patents

Abstract

The railing (1) has a pair of scales positioned in opposite manner, where a floor is placed between the scales. Attachment members (4, 5) for are pivoting members pivoted in a attaching direction or in a spacing direction of attachment zones (7) around a horizontal axis (6) to be orthogonal to a longitudinal axis of a stringer (3). Each member presents a configuration in which each zone affecting inverted-U general shape is opened toward a ground to cap a top of the railing by a scale bar. Each member is equipped with a return unit in the configuration.

Description

The present invention relates to a railing for a work structure, in particular of the scaffold type, as well as to a working structure equipped with such a railing.

It relates more particularly to a railing of the type comprising at least a first and a second ladders vis-à-vis between which is intended to take place a floor, said railing comprising an elongated body to at least one smooth, said guardrail being provided with, or in the vicinity of, each of its opposite ends of a catch member adapted to come, by its attachment zone, in engagement with a ladder bar.

Until now, such railings are: - either equipped with fixed fastening members so that, when the bars 15 are close together, easy passage from a horizontal mounting to a diagonal mounting of the railing is difficult and may require the stall of all fasteners, - either equipped with movable shackles that do not allow secure mounting, that is to say, a mounting where we can always maintain The attachment of a fastening member.

An object of the present invention is therefore to provide a railing whose design allows a permanent attachment of at least one fastening member of the railing to a ladder bar during the passage of the bodyguard. one level bar to another without compromising the quality of the attachment and ease of implementation.

For this purpose, the subject of the invention is a railing for a work structure, in particular of the scaffold type, of the type comprising at least a first 30 and a second ladder facing each other, between which is intended to take place a floor, said guardrail comprising an elongate body with at least one rail, said railing being provided with, or in the vicinity of, each of its opposite ends of an attachment member adapted to come, by its zone d hooking, engaged with a ladder bar, characterized in that the hooking members are pivoting members, with parallel pivot axes, mounted independently of one another, movable to pivot in the direction of an approximation or a separation of their attachment zones around a so-called horizontal axis, orthogonal to the longitudinal axis of the rail and able to extend substantially parallel to a ladder bar in the hooked state of the mobile hooking member of said bar, in that each fastening member has, at least in the horizontal state of the railing rail, a configuration in which the catch area of said fastening member has the general shape of an inverted U and is open in the direction of the ground to come over the top of a ladder bar, 15 and in that each fastening member is equipped with biasing means in said configuration.

Thanks to the fact that each fastening member is a pivoting member which, in the horizontal state of the railing rail and when said fastening member 20 extends under the rail, said upper guardrail, is recalled in a position in which the attachment zone of said fastening member is open towards the ground, it results in an easy introduction from above the fasteners on the bars of the scale. In other words, each fastening member tends, when it is moved away, by pivotal movement, of the configuration in which the catching area of said fastening member affects the general shape of an inverted U and is open in the direction of the ground to come over a ladder bar, to be recalled in said configuration under the action of said return means.

Thanks to the pivotal mounting of each fastening member, it is possible to permanently maintain a gripping member engaged with a bar during a diagonal assembly of said railing and the passage of the latter of a bar level to another, each hooking member being movable between an active position in which it extends vertically of a bar and a retracted or erased position allowing the crossing of said bar.

Preferably, in the substantially horizontal state of the rail of the railing and in the configuration in which the attachment zone of each fastening member affects the shape of an inverted U open towards the ground, each body of The hooking is locked in angular displacement in a direction by the guardrail body forming a limit stop. These arrangements facilitate the establishment and removal of the attachment member relative to the ladder bar.

Preferably, in the horizontal state of the rail of the railing, the return means of each fastening member, mounted to pivot freely within a predetermined angular range, in the configuration in which the zone hanging said inverted U-shaped catch member, is open in the direction of the ground to cover a ladder bar from above, are formed at least by the own weight of said fastening member. The result is a simplicity of construction without risk of error positioning the attachment area of each fastener. Because of its free pivot mounting, each fastening member is operable by inertia. This hooking member is also pivotally movable in a controlled manner.

For this purpose, each hooking member, mounted to pivot freely, is further controllable in displacement and comprises, for its control in displacement, a control surface, said erase control surface 30, disposed above the fastening zone of said fastening member, in the configuration in which, in the horizontal state of the railing rail, the catching area of said inverted U-shaped fastener is open towards the ground to overlie a ladder rung by the top, this erase control surface being able to bear against the underside of a ladder rung during a movement of the railing towards said rung, in order to an angular displacement of said fastening member in the direction of an approximation or a separation of its attachment zone of the attachment zone of the other fastening member.

This support of the fastening member against the underside of a ladder bar 10 allows retraction or erasure by pivoting said fastening member and the crossing of said bar without the need to unhook the fastening member equipping the other end of the railing.

More preferably, the guardrail is of the type equipped with at least one means 15 for coupling to a maneuvering pole, in particular at a height, of the railing.

More preferably, the bottom of the attachment zone of each fastening member, consisting of the core of the U of said zone, forms, with each branch of the U, an angle other than 90 ° to define an inclined ramp. in particular sliding along a ladder bar in the overlapped state of said bar by the fastening member.

In addition, the branches of the U are spaced apart by a distance greater than the diameter of the bar to allow play-fitting of said hooking member on the bar, said clearance allowing a movement of the railing in a direction parallel to the longitudinal axis of the railing rail.

The attachment zones of the attachment members are therefore, in the horizontal state of the rail and, in the absence of any biasing of the fastening members outside their return means, spaced apart one of the another 20 by a distance corresponding to the distance or between-axes between one of the bars of the first ladder and the bar facing the second ladder so as to allow said hooking zones to come to overlie said bars. The width of each attachment zone, corresponding to the distance between the branches of the U of said zone, is greater than the diameter of the bar with which the attachment zone is intended to engage so as to allow play in one direction. parallel to the railing rail, in the hooked state of said hooking members to the bars opposite, when the locking members are io in the release position. This game facilitates diagonal editing.

The invention further relates to a working structure, in particular of the scaffold type, of the type comprising at least a first and a second ladder vis-à-vis between which is intended to take place a floor, 15 and a guard- body comprising an elongated body with at least one rail, characterized in that the railing is of the aforementioned type.

The invention will be better understood on reading the following description of exemplary embodiments, with reference to the appended drawings, in which: FIG. 1 represents a perspective view of a railing according to the invention seen on the side of the body; hanging;

FIG. 2 represents a perspective view of a railing 25 according to the invention, seen on the connecting part side between the hooking member and the rail;

Figure 3 shows a perspective view of a railing according to the invention during its mounting on a work structure;

Figure 4 shows a perspective view of a railing according to the invention in a diagonal position on a work structure;

Figure 5 shows an enlarged detail view of the fastening member 5 without its locking member;

Figure 6 shows an enlarged detail view of the fastening member with its locking member;

Figures 7 to 10 show detail views of the latching member during its passage from a position in which the attachment region of said latching member extends below a bar to a position in which it extends above said bar. As mentioned above, the railing 1, which is the subject of the invention, is more particularly intended to equip an elevating safety structure 21, in particular of the scaffold type. This working structure 21 generally comprises at least a first 22A and a second 22B ladders, said ladders vis-à-vis extending substantially parallel to each other, a floor being intended to take place between said ladders. This railing 1 forming a barrier prevents a fall in the load or person vacuum disposed on said floor. The railing 1 comprises at least one body 2 elongated with at least one rail 3. In the examples shown, the body 2 of the railing 1 is a one-piece body formed of at least two rails 3 that are substantially parallel and connected to one another. one to another by amounts. In this embodiment, this body 2 of the guardrail 1 is positionable from the outside against an upright of each ladder 22A, 22B. The railing 1 is provided with, or in the vicinity of, each of its opposite ends of a fastening member 4, 5 adapted to come, by its attachment zone 7, in engagement with a ladder bar 23 .

In the examples shown, the fastening members 4, 5 are arranged on the same side of the railing 1, that is to say on the same side of the barrier formed by the guardrail body 2 to extend each between the amounts of the ladder with which they come into engagement with the applied state of the railing from the outside against the amounts of the first and second ladders. Thus, the fastening member 5 is intended to extend between the uprights of the first ladder 22A while the fastening member 4 is intended to extend between the amounts of the second ladder 22B to the applied state of the guardrail against the amounts of the first and second scales. Each fastening member is connected to the body 2 of the railing by a connecting portion 9 holding the fastening member 4, 5 spaced apart from the guardrail body 2 to delimit between body 2 and guard rail 4 5 attachment a housing adapted to receive a scale amount 24. This connecting portion 9 here affects the general shape of a recumbent U whose branches are positionable on either side of the amount of the scale.

In the examples shown, each attachment member 4, 5 and its connecting portion 9 are made in one piece and are formed by cutting and folding a blank usually made of metal. The hooking member 4, 5 for its part has the shape of a hook.

It is also possible to make the railing in the form of a simple rail, each end of which is equipped with a hooking member to a ladder rung.

In a manner characteristic of the invention, the fastening members 4, 5 are pivoting members with parallel pivot axes, mounted independently of one another, pivotally movable in the direction of a connection or a spacing of their attachment regions 7, about a horizontal axis 6, orthogonal to the longitudinal axis of the rail 3 and able to extend substantially parallel to a bar 23 scale to the attached state of the movable member 4, 5 hooking said bar 23. Each member 4, 5 of attachment has, at least in the horizontal state of the rail 3 of the railing, a configuration in which the zone 7 hooking said fastening member 4, 5 affects the general shape of an inverted U and is open towards the ground to overlie a bar 23 scale. Each member 4, 5 hooking is equipped with return means in said configuration.

In the examples shown, in the horizontal state of the rail 3 of the railing, the return means of each hooking member 4, mounted to pivot freely within a predetermined angular range, in the configuration in which the catching zone 7 of said inverted U-shaped fastening member 4 is open towards the ground so as to cap a ladder bar 23 from above, are formed at least by the weight of said member 4, 5 hooking.

In addition, each hooking member 4, 5 comprises a locking member 11 for locking said mobile hooking member 4 to a ladder bar 23. Said locking member 11, which preferably has the shape of an anti-raising hook C is pivotally mounted about an axis 12, said horizontal, parallel to the pivot axis 6 of said member 4, 5 d hooking, between an at least partial release position of the opening of the hooking zone 7 of said fastening member 4, 5 and an at least partial closure position of the fastening zone 7 of said member 4, 5 hooking.

The bottom of the hooking zone 7 of each fastening member 4, 5 constituted by the core 8A of the U of said zone, forms with each branch of the U 30 an angle different from 90 ° in order to delimit an inclined ramp. particular sliding along a ladder bar 23 in the overlapped state of said bar by the member 4, 5 hooking. The branches 8B of the U formed by the attachment zone are spaced from each other by a distance greater than the diameter of a bar to allow assembly with clearance of the fastening zone of the body of hanging in a direction parallel to the longitudinal axis of the railing rail. The role of this game will be described below.

Preferably, in the substantially horizontal state of the rail 3 of the guardrail and in the configuration in which the attachment zone of each fastening member 4 has the shape of an inverted U open towards the ground each fastening member 4, 5 is locked in angular displacement in one direction by the guardrail body 2 forming a limit stop. This arrangement facilitates the establishment of fasteners and their engagement with said bars. In the examples shown, this locking in angular displacement of each fastening member is obtained by a return formed on the connecting portion 9 of the fastening member to the guardrail body. This return is represented at 14 in FIG. 5. This return comes, by its free edge, bearing against an amount of said railing when the guardrail body is formed of two smooth interconnected by amounts. In other words, the connecting portion 9 of each fastening member 2 to the railing body 2 is shaped for, in the substantially horizontal state of the rail 3 of the railing and in the configuration in which the the attachment zone of each member 4, 5 of attachment affects the shape of an inverted U open towards the ground, abut against the guardrail body 2 forming end stop of said fastening member. Of course, this blocking in angular displacement could also have been obtained by an abutment positioned directly on the rail of the railing, this stop forming a bearing surface of a portion of the fastening member.

It will be noted, in the examples shown, that each fastening member is further provided, always at its portion 9 of connection with the guardrail body, with a second end stop, shown in FIG. to the figures. This end stop in angular displacement is intended to bear against one of the amounts of the scale in the horizontal state of the bar and the hooked state of said shackles.

Each hooking member 4, 5, mounted to freely pivot, is further controllable in displacement by means of a control surface 10, called the erase control surface 10, arranged above the zone 7 of FIG. hooking of said fastening member 4, 5 in the configuration in which, in the horizontal state of the railing rail 3, the hooking zone 7 of said inverted U-shaped fastening member 4, is opened in the direction of the ground io to come over a bar 23 scale. This erasure control surface 10 is able to bear against the underside of a ladder bar 23 during a movement of the railing 1 towards said bar 23, with a view to an angular displacement of said member 4 5 hooking in the direction of a rapprochement or a spacing of its zone 7 15 hooking the attachment zone 7 of the other fastening member.

Various embodiments can be envisaged according to the configuration of the fastening members.

In the examples shown, the erasure control surface 10 of each fastening member 4 has the form of an inclined ramp descending towards the outside of the railing 1 from a high point disposed at the level of the connecting part 9 of the movable member 4, 5 hooking to the body 2 guardrail. In the examples shown, in the horizontal state of the railing rail 3, in the configuration in which the catching region 7 of each fastening member has the shape of an inverted U and is open in the direction from the ground to overcap a ladder bar 23 from above, said hooking zones 7 of the hooking members 4, 5 are spaced from each other by a distance corresponding substantially to the maximum distance d spacing between the zones 7 of attachment. The zones 7 of attachment are 2969194 It therefore controlled in the direction of a rapprochement under the action of their erase control surface. Thus, the pivotal mounting of each attachment member is adapted to allow, if necessary, the hooked state of one of the attachment members to a ladder bar, for example to the first scale 22A, the erasure of the other movable member to allow the passage of the attachment zone of said member of the position in which said attachment zone extends below the bar 23 of the second scale 22B located opposite the bar 23 crocheted the first ladder 22A to a position in which the hooking zone extends above said bar of the second ladder 22B. Indeed, in the hooked state of one of the attachment members to a ladder bar, the angular displacement of the railing causes an abutment of the erase control surface of the other body member. hooking against a bar of the other ladder, the continuation of the angular displacement causing the retraction or erasure by pivoting of said latching member to allow the passage of its attachment zone from a position in which said zone of attachment extends below the bar of said ladder to a position in which it extends above said bar. At least in the horizontal state of the rail or rails of the railing, the weight of said fastening member 20 then reminds the latter in the so-called active configuration in which the attachment zone affects the general shape of an inverted U and is open in the direction of the ground to overlie a ladder bar. The passage from the active configuration to a retracted configuration is therefore effected by pivoting the fastening member in the direction of bringing its attachment zone closer to the attachment zone of the other member of the fastener. hanging. Of course, an opposite solution is also possible. In this case, in the horizontal state of the rail 3 of the railing, in the configuration in which the catching area 7 of each fastening member has the shape of an inverted U and is open towards the ground In order to cover a ladder bar from above, said hooking regions of the hooking members are spaced apart from one another by a distance substantially corresponding to the minimum spacing distance between the hooking zones; . The so-called erasure control surface of each attachment member then affects the shape of an inclined ramp ascending outwardly of the guardrail. The passage from the active configuration to a retracted configuration is therefore effected by pivoting the fastening member in the direction of a separation of its attachment zone from the attachment zone of the other fastening member. .

As mentioned above, the bottom of the hooking zone 7 of each fastening member 4, 5 constituted by the core of the U of said zone, forms with each branch of the U an angle different from 90 ° to delimit an inclined ramp in particular sliding along a ladder bar 23 in the overlapped state of said bar by the member 4, 5 hooking.

Furthermore, the legs of the U are spaced from each other by a dimension greater than the diameter of the bar of the ladder to be hooked to allow, in the hooked state of said fastening member, a play in one direction parallel to the railing rail. This game allows a diagonal assembly of the railing, that is to say a hooking of the fastening member of one end of the railing to a bar of the first scale and the attachment of the fastening member of the other end of the railing to a bar of the second scale disposed at a level above the bar of the first scale. This diagonal assembly can be obtained from a so-called horizontal assembly in which the fastening members of the two ends of the railing are attached to bars facing the first and second scales. The passage of the horizontal assembly to a diagonal assembly can be carried out by maintaining the attachment member of one end of the railing hooked to the bar of one of the scales, the attachment member of the other end of the railing fading to allow the passage of the bar located at a higher level before repositioning to the vertical of said bar to come to the hair. The various stages of passage of a bar by erasure before repositioning are visible in FIGS. 7 to 10. In this example, the retraction or erasure is carried out with a railing rail in a substantially horizontal position, the hooking members engaging bars at the same level. An example of a diagonal assembly is shown in FIG. 4. An example of horizontal mounting is shown in FIG. 3. This example illustrates a definitive assembly after a diagonal assembly according to FIG. origin not represented.

To allow handling at a high height of the railing, the guardrail is equipped with a coupling means to a maneuvering rod of the railing. This coupling means, shown at 13 in the figures, is here arranged on the rail of the railing and is in the form of a wire shaped open loop.

In the example shown in Figure 3, the assembly of the guardrail is as follows. At first, the body of the railing is applied from the outside against the uprights of the first and second ladders. The hooking members are positioned between the amounts of said scales. Each fastening member is, under the effect of its own weight, returned to a position in which its attachment zone affects the shape of an open U towards the ground. It is therefore sufficient to release the guardrail body to allow positioning of the fastening areas of fastening members overlapped on said bars by capping these bars. Definitive locking is obtained by pivotal movement of the locking members of each fastening member.

For disassembly with a view to positioning diagonally, it is sufficient to unlock the locking members of the fastening members, to pivotally move around one of the bars the guardrail body in the hooked state to said bar by inclining upwards the other end of the railing until reaching the vicinity of the upper bar where the support of the upper bar against the latching member causes the pivoting of the latter and the passage of said bar to come to position above the bar where again, it is recalled in a position in which its attachment zone is oriented downwards and can come to cap, by simple release of the guardrail body, said bar. The other end of the railing can be unhooked from the bar and brought in the same manner to an upper bar.

When the guardrail body must be permanently removed, it is sufficient to unlock the locking members and move upward the entire guardrail body to allow the crossing of said bars. It is also possible, between two bars of each scale, to axially shift the guardrail body to enable it to pull out the fastening member disposed at one end of the guardrail of the interspace space of a scale before obtaining by axial displacement in an opposite direction the output of the fastening member of the other end of the railing of the inter-stud space of the other scale.

When the railing body is to be lowered from a rung, one of the members can be retracted or manually erased by pivoting about its pivot axis 6 to allow the passage to a lower level, while holding the other hooked. fastening member. The other attachment member is in turn retracted manually to allow a passage to a lower level and a horizontal repositioning of the rail of the railing body.

In the examples shown, each attachment member is formed of a single hook. Of course, each attachment member may be formed of several hooks.

Claims (11)

REVENDICATIONS1. Railing (1) for structure (21) of work, in particular of the scaffold type, of the type comprising at least a first (22A) and a second (22B) scales vis-à-vis between which is intended to take place a floor, said guardrail (1) comprising a body (2) elongated with at least one rail (3), said guard rail (1) being provided with, or in the vicinity of, each of its opposite ends of a member (4, 5) adapted to come, by its attachment zone (7), engaged with a ladder bar (23), characterized in that the fastening members (4, 5) are pivoting members, with parallel pivot axes, mounted independently of one another, pivotally movable in the direction of an approximation or a separation of their zones (7) of attachment about an axis ( 6) said horizontal, orthogonal to the longitudinal axis of the beam (3) and able to extend substantially parallel to a bar (23) of ladder in the hooked state of the body (4). , 5) mobile hooking said bar (23), in that each fastening member (4, 5) has, at least in the horizontal state of the rail (3) of the railing, a configuration in which the hooking zone (7) of said hooking member (4, 5) has the general shape of an inverted U and is open towards the ground to overlie a ladder bar (23), and in that each fastening member (4, 5) is equipped with return means in said configuration. 2. Railing (1) for structure (21) of work according to claim 1, characterized in that, in the substantially horizontal state of the railing (3) of the guardrail and in the configuration in which the zone of Each fastening member (4, 5) has the form of an inverted U open towards the ground, each fastening member (4, 5) is locked in angular displacement in one direction by the body (2). ) guardrail forming limit stop. 15 3. Railing (1) for structure (21) work according to one of the preceding claims, characterized in that, in the horizontal state of the rail (3) of the railing, the return means of each fastening member (4, 5), mounted to pivot freely within a predetermined angular range, in the configuration in which the catching region (7) of said fastening member (4, 5), in U inverted, is open in the direction of the ground to overlie a bar (23) of scale, are formed at least by the own weight of said member (4, 5) of attachment. 4. Guardrail (1) for structure (21) working according to one of the preceding claims, characterized in that each member (4, 5), mounted to freely pivoting, is further controllable in displacement and comprises, for its control in displacement, a surface (10) of control, said surface (10) of erasure control, disposed above the zone (7) for attaching said fastening member (4, 5) in the configuration in which the catching zone (7) of said inverted U-shaped fastening member (4, 5) is opened in direction of the ground to overcap a ladder bar (23), this erasing control surface (10) being able to bear against the underside of a ladder bar (23) during a movement of the railing (1) in the direction of said bar (23), with a view to an angular displacement of said member (4, 5) of attachment in the direction of a bringing together or a spacing of its area (7). ) hooking of the zone (7) of attachment of the other attachment member. 5. Railing (1) for structure (21) working according to one of the preceding claims, characterized in that said members (4, 5) for attachment are arranged on the same side of the railing (1). ) to extend between the uprights (24) of each ladder (22A, 22B) in the applied state of the railing (1) from the outside against the uprights (24) of the first (22A) and second (22B) ) ladders, each fastening member (4, 5) being connected to the body (2) of the railing by a connecting part (9) holding the fastening member (4, 5) away from the body (2) railing for delimiting between body (2) railing and member (4, 5) for attachment a housing adapted to receive a post (14) scale. 6. Guardrail (1) for structure (21) of work according to claim 5 taken in combination with claim 4, characterized in that the surface (10) for erasing control of each organ (4, 5) of attachment has the shape of a downward inclined ramp towards the outside of the guardrail (1) from a high point disposed at the portion (9) of connection of the movable member (4, 5) of attachment to the body (2) of guardrails. 15 7. Railing (1) for structure (21) work according to one of the preceding claims, characterized in that, in the horizontal state of the rail (3) of the railing, in the configuration in which the zone (7) of attachment of each fastening member is in the form of an inverted U and is open towards the ground to overlie a ladder bar (23), said zones 20 (7) d The hooking members (4, 5) are spaced apart from one another by a distance substantially corresponding to the maximum spacing distance between the zones (7) for attachment. 8. Guardrail (1) according to one of the preceding claims, characterized in that each member (4, 5) for attachment comprises a locking member (11) for locking said movable member (4, 5). hooking device to a ladder bar (23), said locking member (11), which preferably has the shape of a C-shaped anti-lift hook, being pivotally mounted about an axis (12) , said horizontal, parallel to the axis (6) of pivoting of said member (4, 5) hooking, between a position of at least partial release of the opening of the zone (7) of attachment of said member ( 4, 5) and an at least partial closure position of the catching region (7) of said fastening member (4, 5). 9. Railing (1) for structure (21) working according to one of claims 1 to 8, characterized in that the body (2) of the railing (1) is a one-piece body formed at least two smooth (3) substantially parallel and connected to each other by amounts. 10. Guardrail (1) according to one of claims 1 to 9, characterized in that the bottom of the zone (7) of attachment of each member (4, 5) of attachment, constituted by the soul of the U of said zone, forms with each branch of the U an angle different from 90 ° to delimit an inclined ramp, in particular sliding along a bar (23) of scale in the overlapped state of said bar by the member (4, 5) hooking. 11. Structure (21) of work, in particular of the scaffold type, of the type comprising at least a first (22A) and a second (22B) ladders vis-à-vis between which is intended to take place a floor, and a railing (1) comprising a body (2) elongated with at least one rail (3), characterized in that the railing (1) is according to one of claims 1 to 10.