FR3068724A1 - BARRIER-ECLUSE - Google Patents

Abstract

Barrier-lock comprising: - a gantry defining an access passage, - at least one movable barrier mounted movable tilt able to block access to the loading area, - a movable safety barrier mounted, sliding along said gantry between an open position and a closed position, - said traffic barrier and said safety barrier are connected to each other by a flexible traction means connected to a deflection means, characterized in that: said safety barrier is constituted by at least one upper transverse element and one lower transverse element, said flexible traction means is fixed to the lower transverse element, and in that the posts of said gantries comprise stop so as to block the sliding of the upper transverse element and maintain the safety barrier deployed in the lower position by closing the passage of ac these.

Description

The invention relates to the field of personal safety when handling loads towards a platform, as well as securing the loads positioned on said platform.

It relates more particularly to a lock barrier intended in particular to ensure the safety of persons in an access zone of a load.

In the wine industry, the grapes must be poured into a press. Coming from the harvest, it is placed by a forklift on a gangway. From there, operators take it back to pour it into the press. It is necessary to ensure the safety of these operators, in particular to guarantee that they cannot fall through the access point of the forklift.

There are many barrier gates, also called "security airlocks", delimiting a loading or unloading area which is accessible only from one side.

One of the two sides is permanently closed to ensure the safety of the operators who perform the loading and unloading work. Thus, when the forklift access opening is open, the loading or unloading area is inaccessible by the operators, who therefore cannot fall into it. Conversely, when said opening is closed, said zone becomes accessible to operators.

Document FR 2 495 683 presents a barrier movable in rotation about a horizontal axis. In this system, one side or the other of an airlock can be closed by tilting said movable barrier. The other two sides of the airlock are permanently closed.

This solution has the disadvantage of a large overall height. In addition, it does not offer any solution for equipping a gangway, since such a solution installed on a gangway would permanently block passage.

Document FR 2 980 512 presents a sluice gate provided with a gantry having a traffic barrier associated through a cable with a retractable railing system.

The deployment of the traffic barrier involves the folding of the railing and vice versa.

Said railing can be folded up in the high position of the gantry or deployed transversely in the low position through a central articulation means, a link and sliding means along the amounts of the gantry.

More specifically, said railing is fixed, by its lower end, in a sliding manner to said gantry, and, by its upper end, in an articulated manner, by a joint and connecting rods. The latter are themselves fixed, in an articulated manner, to the upper end of the gantry.

This configuration ensures that a sliding of the lower end of said railing towards the top of the gantry produces a folding of the articulation less at the level relative to the zone in the upper position of the railing, while it is positioned in fallback position, from the top of the gantry, towards the outside of the operator's circulation.

that at par

Thus, in art iculat ion is the fold-back position of the railing, the said arranged substantially at the top of the gantry, so that in the folded-back position, the substantially horizontal and outside the railing plane defined by is the gantry .

Consequently, the entire height of the gantry can be used for loading, when the railing is in the folded position.

However, the problem with this solution is that with this configuration, in the folded position, there is a horizontal space requirement by said railing at the upper part of the gantry. The space, at the height of the gantry and outside the plane of the gantry, is congested horizontally, in the fallback position. Thus, account must be taken of this space occupied by the guardrail in the folded position in order to be able to install the lock barrier in the warehouse. This is why a solution must be found to limit the horizontal space requirement in the space at the top of the gantry.

The document US 2011/030844 proposes an alternative solution to that proposed by the document FR 2 980 512 mentioned above. This document presents a railing in the form of three transverse bars sliding vertically between the two uprights of a gantry. The up and down of the railing, that is to say of these three bars, is a function of the deployment or folding of a traffic barrier associated with said railing via a cable and a pulley system . The deployment of the traffic barrier raises the railing on the upper part of the gantry, and conversely when folding the traffic barrier, the railing descends on the lower part of the gantry.

In this configuration, the aforementioned problem of the horizontal dimensions over the height of the gantry, when the traffic barrier is deployed, has been eliminated, since the ascent and descent of the railing takes place only in the plane of the gantry.

However, in this document, the railing consists of an upper bar connected to the deployment cable of the traffic barrier, and vertically connected to an intermediate bar itself connected to a low bar through two rigid telescopic tubes .

Thus, the presence of rigid telescopic tubes between the three transverse bars of the railing, and the fixing of the cable on the high bar, limit in height and in the plane of the gantry, the possible field of the passage of the load when the traffic barrier is deployed on the bridge.

In fact, in this configuration, when the traffic barrier is lowered, the three bars constituting the body rail occupy the upper part of the gantry plane vertically over a length corresponding at least to the length of the folded telescopic tube. Thus, the entire height within the gantry plane is therefore not available for loading. Therefore, there is a vertical size in the plane of the gantry, in the upper part, corresponding in height, to the value in length of the folded telescopic tube.

The object of the present invention is to at least partially overcome the aforementioned drawbacks, and to provide a space-saving barrier barrier, simple to manufacture and reliable in use, in particular on a walkway. In fact, an alternative solution should be found so that said barrier barrier is as compact as possible during its use and that the opening of the charging and discharging zone is as large as possible relative to the plane height. of the gantry.

To this end, the present invention provides a sluice gate intended to equip a load handling and circulation gangway for an operator.

Usually, said lock barrier of the invention comprises:

a gantry, consisting of two uprights and a cross-member, defining an access passage, at least one traffic barrier, articulated on said gantry, movably tilted in a plane perpendicular to the plane defined by said gantry, and capable of block access to the loading area, a movable safety barrier, sliding at its ends along said uprights of said gantry by a roller-rail system, between a high open position of said access passage and a low closed position of said access passage, said traffic barrier and said security barrier are interconnected by a flexible traction means connected to a bevel gear, so that the tilting closure of said barrier circulation causes the access passage to open by moving the safety barrier in the high position, and, conversely, the folding in opening of said circulation barrier ulation causes the access passage to close by moving said safety barrier in the low position.

Specifically to the invention, said safety barrier consists of at least one upper transverse element and a lower transverse element, capable of sliding vertically along the entirety of said uprights of said gantry and said flexible traction means. is attached to the lower cross member. Thus, in this configuration, the space requirement of said safety barrier is limited to the plane of the gantry both during its movement to position itself in the high or low position, or even when it is fixed. In addition, in this configuration, when said safety barrier is in the high position, the entire height of the gantry can be used for loading and defines the access passage. Thus, there is no loss of space by cluttering the plan of the gantry.

According to another characteristic of the invention, the uprights of said gantry comprise stop means against which the ends of said upper transverse element cooperate in abutment so as to block the sliding of the upper transverse element along said uprights and maintain the safety barrier deployed in the low position by closing the access passage.

Thus, upon actuation of the lock barrier, the folding of said circulation barrier in the plane of the gantry causes deployment by sliding in the low closed position of said security barrier through the flexible traction means. This deployment is limited for the upper transverse element by the stop means so as to secure the access passage and prevent the operator from falling into a vacuum through the access passage.

According to other characteristics of the invention, said safety barrier comprises, in addition to the upper transverse element and the lower transverse element, at least one intermediate transverse element, linked to said upper transverse element through a connecting means. flexible. Thus, the flexible connecting means limits in its travel the intermediate transverse element and positions it at a height defined in the plane of the gantry so as to further secure the operator and prevent it from falling through the access passage.

According to other characteristics of the invention:

said safety barrier consists of the association of three transverse elements, including an upper handrail, an intermediate railing and a lower plinth;

said flexible traction means consists of a chain or a cable connected respectively to a bevel gear which consists of a toothed wheel or a pulley system present in the upper part at the crosspiece of said gantry.

The advantage resulting from the present invention consists in that the gangway is completely released when the safety barrier is deployed in the low position, and this with simple and effective means, without motor or transmission other than a flexible traction means and a means of angle transmission. The size of the lock barrier is very limited, in particular in certain embodiments, making it possible to install it in situations where very little space is available. It is particularly suitable for walkways arranged to receive barrels of grapes by a forklift, in order to pour them into the press located on the other side of the walkway.

Other characteristics and advantages of the invention will emerge from the detailed description which follows, relating to an exemplary embodiment given by way of non-limiting indication.

The understanding of this description will be facilitated by referring to the accompanying drawings, in which:

- Figure 1 schematically shows a lock barrier, equipping a gangway, comprising a traffic barrier in the tilted position closing access to the loading area, and a safety barrier in the high position opening the access passage;

- Figure 2 schematically shows a lock barrier, equipping a gangway, whose traffic barrier is being folded up to open access to the loading area and whose safety barrier is being deployed by sliding toward a low position to close the access passage;

- Figure 3 schematically shows a "front" view of the lock barrier with the traffic barrier closing access to the loading area and the safety barrier is in the high position to open the access passage;

- Figure 4 schematically shows a "rear" view of the lock barrier with the safety barrier in the low position closing the access passage and the traffic barrier in the high position opening access to the loading area for the operator ;

FIG. 5 schematically represents a top view of the lock barrier when the traffic barrier is in the folded position, raised so as to open the operator access to the loading area,

- Figure 6 schematically shows the upper part of the gantry of the lock barrier seen from below in perspective. The present invention relates to a lock barrier 1 intended to equip a gangway 2 for handling load 3 and circulation for an operator O.

The lock barrier 1 comprises a gantry 4 consisting of two uprights 41 and a cross-member 42, the gantry 4 defining an access passage for the loads 3.

The lock barrier 1 comprises at least one circulation barrier 5.

According to a particular embodiment, the lock barrier 1 is positioned against a wall, that is to say that one of these two uprights 41 is against a wall, and that only the upright 41 opposite the wall includes a traffic barrier 5.

According to a preferred embodiment visible in FIGS. 1 and 2, said lock barrier 1 is positioned on a gangway 2 and comprises two traffic barriers 5, one present on each upright 41.

According to the invention, said traffic barrier 5 is articulated on said gantry 4 and is mounted movable in tilting in a plane perpendicular to the plane defined by said gantry 4 so as to make said traffic barrier 5 able to block access to the loading area by an operator O.

Said traffic barrier 5 comprises a foot 51 and two healds 52 hingedly attached to both the foot and the gantry 4, so that said traffic barrier 5 can be folded back in the plane of the gantry 4 by a simple lifting. The lifting to fold said traffic barrier 5 can be done either by lifting the foot 51, or by lifting the heald which may for example include a handle 53.

According to a particular embodiment visible in Figures 1 to 5, said lock barrier 1 comprises two circulation barriers 5 each consisting of a foot 51 and two beams 52. The two circulation barriers 5 being connected together by a connecting tube cage 53, which further limits access to an operator 0 to the loading area and thus increases the safety and the risk of the operator O falling during the loading operation.

Said lock barrier 1 also comprises a security barrier 6 movable between, a high position for opening the access passage, visible in FIG. 3, and, a low position for closing the access passage, visible in FIG. 4.

More specifically, said safety barrier 6 is movable by sliding by its ends along the uprights 41 of the gantry 4 of the lock barrier 1.

For example, the sliding of said barrier of a roller-rail system 7 such as, however, any other type of system, known to those skilled in the art and allowing the ends of the safety barriers 6 to slide along the safety posts 41 6 visible on is done by Figure 6, is possible.

In addition, the operation of the lock barrier 1 of the invention depends on the fact that said traffic barrier 5 and said safety barrier 6 are connected together by a flexible traction means 8 itself connected to a return means d 'angle 80.

Said angle transmission means 80 being advantageously present at the crosspiece 42 of the gantry 4.

According to a first embodiment, said flexible traction means 8 consists of a chain and said angle transmission means 80 consists of a shaft movable in rotation with on each of its ends a toothed wheel, as visible in FIG. 6 .

According to a second embodiment, said flexible traction means 8 consists of a cable and said angle transmission means 80 consists of a pulley system.

Thus, in its operation and by the presence of the flexible traction means 8, connected to the bevel gear 80, the tilting in closing of said circulation barrier 5 causes the access passage to open by movement of the barrier safety device 6 in the high position. In other words, the tilting of the traffic barrier 5 causes the safety barrier 6 to slide along the uprights 41 until it reaches a high position near the crosspiece 42.

Conversely, the folding in opening of said traffic barrier 5 by simple lifting, causes the access passage to be closed by displacement of said safety barrier 6 in the low position. In other words, the folding of the traffic barrier 5 towards the plane of the gantry 4 causes the safety barrier 6 to slide along the uprights 41 until it reaches a low position blocking the access passage for loading. and leaving the passage free to an operator O.

According to the present invention, and in order to minimize the overall dimensions in space of said lock barrier 1 during operation or during the tilting of said traffic barrier 5, said safety barrier 6 consists of at least one upper transverse element 61 and a lower transverse element 62.

According to an advantageous embodiment, said safety barrier 6 comprises, in addition to the upper transverse element 61 and the lower transverse element 62, at least one intermediate transverse element 63, as visible in FIGS. 6 and 4.

According to a preferred embodiment of the invention, said safety barrier 6 consists of the association of three transverse elements 61, 62, 63 including respectively an upper handrail, an intermediate railing and a lower plinth.

According to the present invention, each of the transverse elements constituting said safety barrier 6 is capable of sliding vertically along the entirety of said uprights 41 of said gantry 4, so as to occupy only the space constituted by the plane of gantry 4.

In this way, said security barrier 6 does not clutter the space around said barrier lock 1, either when it is in a fixed position, low closing or high opening of said access passage, or even when of its displacement along the uprights 41.

The sliding of the safety barrier 6 along the uprights 41 is possible because the lower transverse element 62 is fixed to said flexible traction means 8.

In other words, the flexible traction means 8 connects the lower transverse element 62 of said safety barrier 6 to the foot 51 or to the arm 52 of said traffic barrier 5.

Specifically to the invention, the uprights 41 of the gantry 4 comprise means 9 for stopping the vertical displacement in sliding of the upper transverse element 61.

According to the invention, each of the ends of said upper transverse element 61 cooperate in abutment with said stop means 9. In this way, said stop means 9 make it possible to stop the sliding movement of said upper transverse element 61 along said uprights 41 in a central zone allowing the maintenance of said safety barrier 6 deployed in a low position for closing the access passage.

In the low position, when said safety barrier 6 is fixed, the upper transverse element 61 is fixed in a middle region of the gantry 4, while the lower transverse element 62 is fixed in the low position, so that the latter touches the floor on which the gantry rests 4.

According to another characteristic of the invention, in the embodiment comprising an intermediate transverse element 63, the latter is linked to said upper transverse element 61 through a flexible connecting means 10, such as for example a strap or an elastic .

Thus, by this design, the flexible connection means stops the sliding movement of the intermediate transverse element 63 along the uprights 41 when the upper transverse element 61 is wedged by the stop means 9.

Still thanks to the flexible connection means 10 between the upper transverse element 61 and the lower transverse element 63, as visible in FIG. 6, the safety barrier 6 folds back and is compressed to the maximum, in the high open position. . In this way, there is no vertical space requirement in height in the plane of the gantry 4 when the traffic barrier 5 is tilted on the ground.

The present invention therefore provides a lock barrier 1 having a space requirement limited to the maximum both during operation and when switching between different traffic barriers 5 and safety 6 between their respective positions.

Thus, the lock barrier 1 of the invention is implantable in areas where very little space is available 5 while guaranteeing the safety of both the operator O and the loading during charging.

Said lock valve 1 of the invention is particularly suitable for walkways 2 arranged to receive barrels of must by a forklift, with a view to pouring them back into the press located on the other side of the walkway 2.

Claims (4)

1) Barrier-lock (1) intended to equip a gangway (2) for load handling and circulation for operator (O) comprising: a gantry (4), consisting of two uprights (41) and a crosspiece (42), defining an access passage, at least one traffic barrier (5), articulated on said gantry (4), mounted movable in tilting in a plane perpendicular to the plane defined by said gantry (4), and capable of blocking access to the loading area, a safety barrier (6) mounted mobile, sliding by its ends along said uprights (41) said gantry (4) by a roller-rail system (7), between a high position for opening said access passage and a low position for closing said access passage, said traffic barrier (5) and said barrier safety (6) are interconnected by a flexible traction means (8) connected to a bevel gear (80), so that the tilting in closing of said circulation barrier (5) causes the opening of the access passage by moving the safety barrier (6) in the high position, and , conversely, the folding in opening of said traffic barrier (5) causes the access passage to be closed by displacement of said safety barrier (6) in the low position, characterized in that: said safety barrier (6) consists of at least one upper transverse element (61) and a lower transverse element (62), capable of sliding vertically along the entirety of said uprights (41) of said gantry (4 ), said flexible traction means (8) is fixed to the lower transverse element (62), and in that the uprights (41) of said gantry (4) include stop means (9) against which cooperate in stop the ends of said upper transverse element (61) so as to block the sliding of the upper transverse element (61) along said uprights (41) and keep the safety barrier (6) deployed in the low position by closing the passage d 'access. 2) Lock barrier (1) according to the preceding claim characterized in that said safety barrier (6) comprises in addition to the upper transverse element (61) and the lower transverse element (62), at least one transverse element intermediate (63), linked to said upper transverse element (61) through a flexible connection means (10). 3) Lock barrier (1) according to the preceding claim characterized in that said safety barrier (6) consists of the association of three transverse elements, including an upper handrail, an intermediate railing and a lower plinth. 4) Barrier-lock (D of a preceding claim, characterized in any flexible (8) consists of angle (80) respectively consists of a level wheel pulley system return present upper part through said gantry (4).