FR3077088A1 - BARRIERE-ECLUSE GUILLOTINE - Google Patents

Abstract

Barrier-lock (1) comprising: - a gantry (4), consisting of vertical uprights (41), - at least one traffic barrier (5), movable between the uprights (41) between a high position of opening and a low closing position, - a safety barrier (6) movable between said vertical uprights (41) between an upper open position and a lower closed position, - said traffic barrier (5) and said safety barrier ( 6) are connected by a flexible traction means (7) connected to an angle transmission means (8), so that the sliding of said traffic barrier (5) causes the movement of the safety barrier (6). , characterized in that: - said gantry (4) consists of two vertical uprights (41) - each of said vertical uprights (41) is in the form of a profile having on the inner side two parallel slides (411), one for the pebbles of the traffic barrier (5 ), the other for the rollers of the safety barrier (6).

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 an articulation 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 2011/0302844 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 ascent and descent 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 by means of a cable and a system pulley. 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 solve, at least in part, the aforementioned drawbacks, and to propose a space-saving barrier lock, simple to manufacture, reliable to 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 the operator.

Usually, said lock barrier of the invention comprises:

a gantry, consisting of vertical uprights vis-à-vis associated with each other by a cross, defining an access passage, at least one traffic barrier, mounted movable in vertical movement by its ends along and between the vertical uprights of said gantry a roller-rail system, between a high open position and a low closed position capable of blocking access to the loading area, a movable safety barrier, sliding at its ends along and between said uprights vertical of said gantry by a roller-rail system, between a high position for opening said access passage and a low position for closing said access passage, said traffic barrier and said security barrier are interconnected by a flexible traction means connected to an angle return means, so that the sliding in the low position of said traffic barrier causes the opening of the pa ssage access by moving the security barrier in the high position and, conversely, sliding in the high position of said traffic barrier causes the closure of the access passage by moving said security barrier in the low position.

Specifically to the invention, in said lock barrier:

said gantry consists of two vertical uprights, each of said vertical uprights is in the form of a profile having on the inside two parallel slides, one for the rollers of the traffic barrier the other for the rollers of the barrier of security.

Consequently, the structure of said gantry is simplified as much as possible and more compact in design than the gantries of the lock gates of the prior art.

According to another characteristic of the invention:

said profile is U-shaped, the groove of which is divided into two parallel slides by a flat iron on edge forming a partition wall, said groove of the U profile has, on its upper end, substantially close to the crosspiece of said gantry, said angle return means surmounting said flat iron on edge.

According to other characteristics of the invention, said lock barrier comprises in the plane of the gantry, under the cross member, a reinforcing element stiffening the area below said cross member of the gantry on its upper half.

Said reinforcing element being located between the uprights, in particular between the slides, makes it possible to guarantee a parallel position between the latter and thus to reinforce the stability of the complete structure of the barrier-lock.

According to a particular embodiment, said flat iron on edge has at least one protuberance intended for fixing a reinforcing element in the plane of the gantry.

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, at least one of its transverse elements having at each of its ends a roller intended to slide in said slide within each of said vertical uprights,

- Said flexible traction means, of a vertical upright, is attached by one of its ends to at least one roller of said traffic barrier and, by the other of its ends, to at least one roller of said safety barrier , said flexible traction means being connected to said angle return means,

said flexible traction means consists of a toothed chain or belt cooperating with said angle transmission means,

- Said angle transmission means consists either of a toothed ring secured to a transmission shaft engaged in a bearing, said toothed ring being able to cooperate with said flexible traction means, said transmission shaft being parallel or coincident with said crosses the gantry.

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 view of two barrier gates of the invention one positioned next to the other on a gangway in the presence of two operators, the lock gate on the left having a traffic barrier in the high position allowing access to the loading area, while the lock on the right presents a traffic barrier in the low position blocking access to the loading area by the two operators but clearing the access passage in the plane of the gantry to load the boxes,

FIG. 2 schematically represents a lock barrier, comprising a traffic barrier in the low position and a safety barrier in the high position,

FIG. 3 schematically represents the lock barrier of FIG. 2 comprising a traffic barrier in the high position and a safety barrier in the low position,

schematically represents

enlargement figure

higher

vertical uprights

comprising

return angle connected to the flexible traction means and the two guide paths,

figure

vertical uprights provided schematically represents a separate slides

by a band.

As visible in Figure 1, the lock barrier 1 intended to equip a gateway 2 for handling load 3 and circulation for an operator O comprises a gantry 4 consisting of two uprights 41 and a crosspiece 42, the gantry 4 defining an access passage for loads 3 in the plane of gantry 4.

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 Figures 1 and 2, said lock barrier 1 is positioned on

a walkway 2 and includes two traffic barriers 5, one present on each upright 41.

According to the invention, said traffic barrier 5 is mounted movable in vertical displacement by its ends along and between the vertical uprights 41 of said gantry 4 by a roller-rail system.

Thus, said circulation barrier 5 is capable of sliding between the vertical uprights 41 between a high open position and a low closed position capable of blocking access to the loading area, that is to say capable of block the passage of an operator O on the gateway 2.

Said circulation barrier 5 consists of a cage comprising two rails 51, each connected by one of its ends to the upright 41 of the gantry 4 and by the other of its ends to a connecting tube 52 of the cage.

As visible in FIGS. 1 to 3, according to a preferred embodiment, said circulation barrier 5 consists of a cage comprising on each side two healds 51 connected both to an upright 41 and to two connecting tubes 52 .

The lifting of said circulation barrier 5 can be done by lifting the heald 51 which may for example include a handle.

Thus said traffic barrier 5 makes it possible to prevent access to an operator 0 at the loading area and thus to guarantee its safety by eliminating the risk of the operator O falling during the loading operation.

Said lock barrier 1 also comprises a security barrier 6 mounted mobile, sliding at its ends along and between said vertical uprights 41 of said gantry 4 by a roller-rail system.

According to a particular embodiment, said safety barrier 6 consists of the association of three transverse elements, including an upper handrail 61, an intermediate railing 62 and a lower plinth 63, at least one of its transverse elements having at each of its ends a roller intended to slide within each of said vertical uprights 41.

According to another particular embodiment, the association of said three transverse elements is done through two slides. The latter are present at the ends of said transverse elements and make it possible to hold them together. In this embodiment, each of the vertical slides is inserted into the slide of said uprights 41. Each of the slides has, projecting, at least one roller intended to slide along the vertical uprights 41 within the slides.

In the same way as for the traffic barrier 5, said security barrier 6 is movable between a high position for opening said access passage visible in FIG. 2 and a low position for closing said access passage visible in FIG. figure 3.

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 safety barrier 6 does not obstruct the space around said lock gate 1, either when it is in the low closed position or in the high open position 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 at least one of the transverse elements, preferably the lower transverse element 62, is fixed to said flexible traction means 8.

According to another embodiment of the invention, the sliding of said traffic barrier 5 and / or of said security barrier 6 can be done by any other type of system known to those skilled in the art which allows the sliding of the ends of said barriers 5 and 6 along the uprights

41.

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 7 itself connected to a return means d 'angle 8.

According to an advantageous embodiment, said flexible traction means 7 consists of a chain as visible on

the figure 4 or a toothed belt cooperative with said means return angle 8. According to a first mode of production visible on the figure 4, said traction means flexible 7 consists of a chain and said referral angle 8 consists of a crowned toothed 81 in solidarity with tree of transmission 82

engaged in a bearing 83 as visible in FIG. 4. Said transmission shaft 82 being movable in rotation and having on each of its ends a toothed ring 81. Said toothed ring 81 being able to cooperate with said flexible traction means 7, said transmission shaft 82 being parallel or coincident with said crosspiece 42 of the gantry 4.

Advantageously, as visible in FIG. 4, said angle gear 8 of the toothed crown type 81 is protected by a safety plate 84 preventing an operator 0 from trapping their fingers in the angle gear 8.

According to a second embodiment, said flexible traction means 7 consists of a toothed belt and said angle transmission means 8 consists of a system identical to that visible in FIG. 4.

Said angle return means 8 is advantageously present near the crosspiece 42 of the gantry 4.

Thus, in its operation and by the presence of the flexible traction means 7, connected to the bevel gear 8, the sliding in the low position of said circulation barrier 5 causes the access passage to open by movement of the safety barrier 6 in the high position.

Conversely, the sliding in the high position of said traffic barrier 5 causes the access passage to be closed by displacement of said safety barrier 6 in the low position.

In other words, the rise of the traffic barrier 5 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.

More specifically, said flexible traction means 7, of a vertical upright 41, is attached by one of its ends to at least one roller of said traffic barrier 5, and, by the other of its ends to at least one roller of said safety barrier 6, said flexible traction means 7 being connected to said angle return means 8.

According to a specific feature of the invention, said gantry 4 consists only of two vertical uprights 41.

As shown in Figure 5, each of said vertical uprights 41 is in the form of a profile having on the inside two parallel slides 411, one provided for guiding the rollers of the traffic barrier 5, the other intended for guiding the rollers of the safety barrier

6.

Thus, having only two vertical uprights 41 for sliding both the traffic barrier 5 and the safety barrier 6 makes it possible to limit as much as possible the number of elements necessary for the operation of the barrier lock 1 and limit its size.

Unlike the existing lock barriers, which require two vertical posts to move the traffic barrier and two vertical posts to move the safety barrier 6, the lock barrier of the invention is of lightened structure. Indeed, it minimizes the number of elements to manufacture the barrier lock 1 which allows an economic gain for the manufacture of said barrier.

Advantageously, said profile of the vertical upright 41 is U-shaped and has a groove. Said groove is divided into two parallel slides 411 by a flat iron on edge 412. Said flat iron on edge 412 makes it possible to delimit said slides 411 with a vertical upright 41 and to guide the rollers of the circulation barrier 5 and of the security barrier 6.

Preferably, said groove of the U-shaped profile has, on its upper end, substantially close to the crosspiece 42 of said gantry 4, said angle return means 8, the latter surmounting said flat iron on edge 412 as visible on the Figure 4 and Figure 5.

Thus, in operation, the position of said angle reference means 8, preferably within the groove of the U-shaped section, will be able to guide the rollers of said traffic barrier 5 and of said safety barrier 6 respectively. said barriers will be able to move up or down alternately, by displacement of the rollers within their respective slide 411 and the movement of the flexible traction means 7.

Said lock valve 1 advantageously having two vertical uprights 41 for the movement of two barriers, may comprise in the plane of the gantry 4, under the crosspiece 42, a reinforcing element 9.

As shown in Figures 1, 2 or 3, said reinforcing element 9 can be in the form of a cross, and allows to stiffen the area below said crosspiece 42 of the gantry 4, specifically on its upper half.

According to a particular embodiment, said flat iron on edge 412 has at least one protrusion 413 intended for fixing said reinforcing element 9 in the plane of the gantry

4.

Thus, advantageously said flat iron 412 also makes it possible to delimit the slides 411 of the U-shaped profiles, the fixing of said reinforcing element 9.

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 pallets of boxes of grapes by a forklift truck, with a view to pouring them back into the press located on the other side of the walkway 2.

In addition, the lock barrier of the invention is of the most compact design possible, and has only two vertical uprights for raising or lowering said traffic barrier and said safety barrier.

Thus, an economic gain is achieved for the manufacture of said lock barrier by avoiding doubling the vertical uprights.

Claims (8)

1) Sluice barrier (1) intended to equip a gangway (2) for load handling and circulation for operator (O) comprising: - a gantry (4), consisting of vertical uprights (41) facing each other associated by a cross member (42), defining an access passage, - at least one traffic barrier (5), mounted movable in vertical displacement by its ends along and between the vertical uprights (41) of said gantry (4) by a roller-rail system, between a high open position and a low closing position capable of blocking access to the loading area, - A security barrier (6) mounted mobile, sliding at its ends along and between said vertical uprights (41) of said gantry (4) by a roller-rail system, between a high opening position of said passage of access and a low position for closing said access passage, - Said traffic barrier (5) and said safety barrier (6) are interconnected by a flexible traction means (7) connected to an angle transmission means (8), so that the sliding in the low position of said traffic barrier (5) causes the access passage to open by moving the safety barrier (6) in the high position, and, conversely, the sliding in the high position of said traffic barrier (5 ) causes the access passage to close by moving said safety barrier (6) in the low position, characterized in that: - said gantry (4) consists of two vertical uprights (41), - Each of said vertical uprights (41) is in the form of a profile having on the inner side two parallel slides, one for the rollers of the traffic barrier (5), the other for the rollers of the traffic barrier security (6). 2. Lock barrier (1) according to the preceding claim, characterized in that said profile is U-shaped, the groove is divided into two slides (411) parallel by a flat iron on edge (412). 3. Barrier — lock (1), according to the preceding claim, characterized in that said groove of the ü-profile has, on its upper end, substantially near the crosspiece (42) of said gantry (4), said return means angle (8) surmounting said flat iron on edge (412). 4. barrier gate (1) according to any one of the preceding claims, characterized in that it comprises in the plane of the gantry (4), under the crosspiece (42), a reinforcing element (9) stiffening the area below said crosspiece (42) of the gantry (4) on its upper half. 5. Barrier — lock (1), according to claim 2, characterized in that said flat iron on edge (412) has at least one projection (413) intended for fixing a reinforcing element (9) in the plane of the gantry (4). 6. Barrier lock (1) according to any one of the preceding claims, characterized in that said safety barrier (6) consists of the association of three transverse elements, including an upper handrail (61), a guard -intermediate body (62) and a lower plinth (63), at least one of its transverse elements having at each of its ends a roller intended to slide in said slide (411) within each of said vertical uprights (41) . 7. Lock barrier (1) according to any one of the preceding claims, characterized in that said flexible traction means (7), of a vertical upright (41), is attached by one of its ends to at least a roller of said traffic barrier (5) and, by the other of its ends, to at least one roller of said safety barrier (6), said flexible traction means (7) being connected to said return means of angle (8). 8. Lock barrier (1) according to any one of the preceding claims, characterized in that said flexible traction means (7) consists of a toothed chain or belt cooperating with said angle return means (8) .