FR3137707A1 - Guide mechanism for gate - Google Patents

Abstract

Guide mechanism for gate The present invention relates to a guide mechanism for a structure moved in horizontal translation such as a gate, characterized in that the mechanism comprises: at least one shoe (2) comprising, on the one hand, a surface of anchoring (21) to the ground and, on the other hand, at least one cooperation interface (22) with a rail (3) carried by the displaced structure, the cooperation interface (22) having a substantially rectilinear arrangement, a rail (3) rectilinear capable of being mounted under the lower face of the structure moved in a manner substantially aligned with the axis of translation of the structure moved, the rail (3) comprising, on the one hand, at least one cooperation interface ( 32) with the shoe (2) to bear on the shoe (2) and, on the other hand, at least one centering interface (41) for the position of the rail (3) relative to the shoe (2). Figure to be published with the abstract: Fig.3

Description

Guide mechanism for gate

The present invention relates to the field of guiding mechanisms for structures in axial movement and more particularly to the field of guiding mechanisms for sliding gates.

As part of the operation of a sliding gate and in particular as part of its movement, it is translated into the plane of the gate, generally under the action of a motorized drive mechanism. Conventionally, the structure which produces the gate panel is mounted sliding relative to the surface of the ground against which the panel is supported. However, such a construction forces the surface of the ground to have a certain homogeneity so as to be able to cooperate without difficulty with the lower surface of the gate panel.

In order to overcome variations that may exist in the ground surface, an alternative so-called “self-supporting” design of the gate panel has been developed. The gate panel is thus carried by an arm positioned in the extension of the panel and which provides the interface through which the translation of the panel is carried out. This movement thus takes place in such a way that the gate panel is suspended cantilevered from the surface of the ground, the translation actuating motor intervening at the level of the gate arm. However, due to the arrangement as an extension of the arm with the gate panel, such an installation requires a significant amount of space. Furthermore, the suspended movement of the panel generates particularly high stresses at the level of the gate arm so that risks of breakdown or breakage are likely to occur.

The present invention aims to overcome these drawbacks by proposing a mechanism for the translation of a gate which is able to overcome possible variations in the surface of the ground while making it possible to dispense with a mechanism of maintaining the gate panel cantilevered from the ground.

• au moins un sabot comprenant, d’une part, une surface d’ancrage au sol et, d’autre part, au moins une interface de coopération avec un rail porté par la structure déplacée, l’interface de coopération présentant un arrangement sensiblement rectiligne,
• un rail rectiligne apte à être monté sous la face inférieure de la structure déplacée de façon sensiblement alignée avec l’axe de translation de la structure déplacée, le rail comprenant, d’une part, au moins une interface de coopération avec le sabot pour prendre appui sur le sabot et, d’autre part, au moins une interface de centrage de la position du rail par rapport au sabot.

The invention relates to a guiding mechanism for a structure moved in horizontal translation such as a gate, characterized in that the mechanism comprises:

• at least one shoe comprising, on the one hand, an anchoring surface to the ground and, on the other hand, at least one cooperation interface with a rail carried by the moved structure, the cooperation interface having a substantially rectilinear arrangement ,
• a rectilinear rail capable of being mounted under the lower face of the structure moved in a manner substantially aligned with the axis of translation of the structure moved, the rail comprising, on the one hand, at least one cooperation interface with the shoe to take support on the shoe and, on the other hand, at least one interface for centering the position of the rail relative to the shoe.

The invention also relates to an assembly comprising a gate mounted to slide horizontally relative to at least one fixed supporting structure, characterized in that the assembly comprises at least one guide mechanism according to the invention.

The invention will be better understood, thanks to the description below, which relates to the preferred embodiments, given by way of non-limiting example, and explained with reference to the appended schematic drawings, in which:

represents a schematic illustration of an example of installation of a guiding mechanism according to the invention for moving a gate in translation,

represents a schematic illustration of a first example of construction of a cooperation of a shoe and a rail within the framework of a guiding mechanism according to the invention,

represents a schematic illustration of a second example of construction of a cooperation of a shoe and a rail within the framework of a guiding mechanism according to the invention,

represents schematic illustrations in particular of the upper and lower faces of an upper part participating in the production of a shoe according to the second example of construction as illustrated in ,

represents schematic illustrations in particular of the upper and lower faces of a lower part participating in the production of a shoe according to the second example of construction as illustrated in ,

represents schematic illustrations of different faces of a complementary centering interface intended to be mounted at the end of a rail in the context of the second construction example as illustrated in .

The present invention relates to a guiding mechanism for a structure 1 moved in horizontal translation such as a gate, characterized in that the mechanism comprises:

- at least one shoe 2 comprising, on the one hand, an anchoring surface 21 on the ground and, on the other hand, at least one cooperation interface 22 with a rail 3 carried by the displaced structure 1, the interface of cooperation 22 presenting a substantially rectilinear arrangement,

- a rectilinear rail 3 capable of being mounted under the lower face of the structure 1 moved in a manner substantially aligned with the axis of translation of the structure 1 moved, the rail 3 comprising, on the one hand, at least one cooperation interface 32 with the shoe 2 to support on the shoe 2 and, on the other hand, at least one centering interface 41 of the position of the rail 3 relative to the shoe 2.

It should be noted that preferably, the structure 1 translated by the guide mechanism of the invention is a portal and more particularly at least part of the panel of a portal. However, this translated structure 1 which is carried by a rail 3 at the level of its lower face is also capable of corresponding to any other type of structure capable of being moved by translation while resting on at least one rail 3 in cooperation with one or more sabots 2.

The guiding mechanism of the invention thus involves one or more shoes 2 positioned and anchored against the surface of the ground so as to produce, on the one hand, support points for the structure 1 translated through the rail 3 and, on the other hand, elements for adjusting the travel of the rail 3 and the displaced structure 1 that it supports. The distribution of the shoes 2 against the surface of the ground by their respective anchoring surfaces 21 is carried out so as to obtain a spacing of the shoes between them making it possible to overcome the imperative of a homogeneity of surface on the ground to interact with the structure 1 moved or with the rail 3 which carries it. The shoe(s) 2 are thus positioned along the axis of the movement stroke of the structure 1 moved and supported by the rail 3. Thus, during its movement, the rail 3 and the supported structure 1 are translated to rest on at less a shoe 2 whatever the position of the rail 3 and the associated structure 1 along its course.

The rail 3 being positioned at the level of the lower face of the supported structure 1, the cooperation interface 32 of the rail 3 is then carried by at least one surface positioned at the level of the lower face of the rail 3, so as to interact effectively with the upper surface of the shoe 2 against which the rail 3 bears. Thus, likewise, the cooperation interface 22 of the shoe 2 is positioned, at least in part, at the level of the upper surface of each of the shoes 2 of the mechanism of the invention.

In order to optimize the effectiveness of guiding the movement of the rail in relation to the different shoes, the cooperation interface 32 of the rail 3 with each of the shoes 2 of the mechanism presents complementarity with the respective cooperation interfaces 22 carried by each of the shoes 2. Preferably, this cooperation is based on a complementarity of shape in a plane in section perpendicular to the axis of movement of the rail 3. The lower face of the rail 3 intended to interact with a shoe 2 has a complementary arrangement with at least a portion of the surface of the upper part of the shoe 2. This complementarity is found in particular in a plane in section perpendicular to the axis of translation and/or to the axis of the rail 3. Thus, surfaces carried by one of the two elements, rail 3 or shoe 2, cooperate with lateral surfaces carried by the second of these elements.

According to an example of construction relating to an alternative embodiment according to the invention, in a plane in section perpendicular to the axis of translation and/or to the axis of the rail 3, the rail 3 and the shoe 2 have complementarity concavity and convexity. According to this variant of construction, a first of the two elements, rail 3 or shoe 2, has a convex arrangement of complementary shape in section with the second of the two elements, rail 3 or shoe 2, which has a concave arrangement in section. Thus, the second of the two elements, rail 3 or shoe 2, has a groove inside which at least one complementary part carried by the first of the two elements, rail 3 or shoe 2, is capable of sliding. This complementarity of convex/concave shapes is likely to involve an arrangement of polygonal or curved shape or having several sections so as to produce an arched arrangement corresponding to a broken arch.

According to an example of construction relating to another alternative embodiment according to the invention and capable of being combined with the other alternative embodiments previously detailed, at least one cooperation interface 22 of the shoe 2 is produced by at least one surface of sliding 81, the sliding surface 81 being arranged in a plane comprising at least the axis of translation of the rail 3. The sliding surface 81 thus produces a surface adapted to form a privileged point of contact between a part of the shoe 2 and a part of the lower surface of the rail 3 and at which friction is restricted to limit wear or degradation of the parts, shoe 2 and rail 3, in contact. The sliding surface 81 forms a surface carried by the shoe 2 and against which at least a portion of the lower part of the rail 3 in translation is intended to be in contact, or even to press under the effect of the rail 3 in movement. This sliding surface 81 has the shape of a plate projecting relative to the rest of the surface of the shoe 2 which carries this sliding surface 81. This sliding surface 81 is thus positioned at the level of one of the upper faces and/or lateral of the shoe 2 in a plane in section perpendicular to the axis of translation and/or to the axis of the rail 3. According to an example of construction, this plate of the sliding surface 81 is also capable of being formed by the surface of an element 8 embedded or inserted in a housing 92 of complementary dimensions integrated inside the structure of a support block combining several parts 25, 26 to form the shoe 2. According to an example of construction, the sliding surface 81 comprises at least one rubber type material incorporating one or more urethane or polyurethane type compounds and/or having identical or even similar properties.

According to an example of construction relating to another alternative embodiment according to the invention and capable of being combined with the other alternative embodiments previously detailed, at least one cooperation interface 22 of the shoe 2 is produced by at least one bearing 61 pivotally mounted around an axis 611 of rotation substantially perpendicular to the axis of movement of the rail 3. Also, the cooperation interface 22 integrates at least one bearing 61 pivoting around a substantially horizontal axis and positioned so that the peripheral surface of the bearing 61 forms a contact and/or support surface of at least part of the lower face of the rail 3. At least part of the peripheral surface of the bearing 61 is thus positioned projecting relative to to the rest of the upper surface of the shoe 2. The rest of the bearing 61 is then positioned in a housing 91 inside the shoe 2 and open at the level of the upper face of this shoe 2. The rail 3 is thus led to be moved in support against the peripheral surface of the bearing 61, causing the rotation of the bearing 61 around its axis 611. Also, compared to a sliding of the rail 3 against a surface of the shoe 2, the bearing 6 allows a reduction in the risks of wear and/or deterioration of the contact surfaces of the cooperation interfaces 22, 32 of the shoe 2 and the rail 3. According to a preferred example of construction, at least the peripheral surface of the bearing 61 comprises at least one rubber type material integrating one or more compounds of the urethane or polyurethane type and/or having identical or even similar properties. As an example of construction, the part forming the axis 611 of rotation is inserted across the housing 91 intended to receive the bearing 61 while being positioned at at least one pair of coaxial through orifices 911 of dimensions complementary and at which the axis 611 of rotation is held in position by fixing elements 612. According to an example relating to a specificity of this variant of construction, one or more bearings 61 are likely to be positioned at the level of lateral faces of the shoe 2 so as to be mounted pivoting around respective substantially vertical axes. Thus, at least part of the peripheral surface of the bearing 61 is positioned projecting relative to the rest of the lateral surface of the shoe 2 at which this bearing 61 is mounted.

According to an example of construction relating to another alternative embodiment according to the invention and capable of being combined with the other alternative embodiments previously detailed, at least one end of the rail 3 or of the shoe 2 carries a centering interface 41 of the movement of the rail 3 relative to the shoe 2, the centering interface 41 comprising, in a substantially horizontal plane, a substantially convex projecting arrangement 41. It should be noted that, when this arrangement is carried by the shoe 2, the latter is preferably positioned at the end of the shoe 2 which faces the end of the approaching rail 3 when the rail 3 is not yet in cooperation with the shoe 2.

According to a specific example of this variant of construction, the centering interface 41 is carried by one end of the shoe 2. The convexity of this projecting arrangement thus comprises, in a substantially horizontal plane, a vertex 411 substantially centered on the axis of translation of the rail 3. The side faces 412 of this convex arrangement located on either side of the top 411 comprise one or more facets 412 which have respective inclinations relative to the axis of translation of the rail 3. These side faces realize thus surfaces 412 capable of causing a deflection of the end of the rail 3 which comes into contact with the end of the shoe 2 at these levels. These lateral faces 412 are likely to present respective arrangements that are substantially planar or, alternatively or complementary, convex arrangements made by curved and/or rounded surfaces or even by arcuate arrangements in the form of a juxtaposition of several facets. By its deviation against the end of the shoe 2, the position of the rail 3 is thus able to be adjusted relative to the shoe 2 so that the complementarity of shape, convex/concave, between the rail 3 and the shoe 2 is correctly carried out in a plane in section perpendicular to the axis of movement of the rail 3. Also, in a plane in section perpendicular to the axis of movement of the rail 3, when the upper part of the shoe 2 has a convexity intended to cooperate with the concavity of the lower part of the rail 3, the position of the rail 3 can be adjusted by deflection of one of the edges of the opening of the concavity at the end of the rail 3 in sliding against one of the side surfaces of the convex arrangement at the end of the shoe 2. The concavity of the lower part of the rail 3 is thus positioned optimally with respect to the convex upper part of the shoe 2. According to an example of construction relating to a specific variant of the construction variant previously detailed, the shoe 2 has a substantially symmetrical arrangement so that each of its two ends carries a centering interface 41. Such a construction thus allows easy assembly of the shoe 2 during installation of the guide mechanism , the installer not having to worry about a particular positioning direction of the shoe 2 relative to the arrival or approach side of the rail 3 in the direction of the shoe 2.

According to an additional characteristic, likely to be accessory, of the construction variant previously detailed, the centering interface 41 cooperates with a complementary centering interface 42 carried by the end of the second of the two elements, rail 3 or shoe 2, which does not carry the centering interface 41. This complementary centering interface 42 is produced in the form of a slope 7 which, in a substantially vertical plane and which includes the axis of translation of the rail 3, forms an inclination by relative to the horizontal. Thus, according to a specific example of this variant of construction, the complementary centering interface 42 is carried by one end of the rail 3. The edge of the opening of the concavity at the end of the rail 3 presents, in a substantially vertical plane which comprises the axis of the rail 3, a slope 7 which forms an inclination with respect to a horizontal plane, so that the surface of this slope 7 forms at least part of the lower surface of the rail 3 and is oriented to be positioned in opposite the shoe 2 with which the rail 3 is intended to cooperate. This slope 7 carried by the end of the rail 3 also accompanies the sliding of the rail 3 against one of the lateral surfaces 412 of the convex arrangement at the end of the shoe 2 which creates the centering interface 41, so as to operate a progressive adjustment of the position of the rail 3 relative to the shoe 2. The mounting of the complementary centering interface 42 on the rail 3 is likely to involve one or more fixing elements 421.

It should be noted that according to an example relating to an alternative variant of construction, the upper part of the shoe 2 has a concave arrangement in the form of a groove dimensioned to cooperate, in a plane perpendicular to the axis of translation of the rail 3, with a convex arrangement of the lower surface of the rail 3. According to a particularity of this variant of construction, the centering interface 41 which forms a convex arrangement with a projecting vertex 411 is carried by one end of the rail 3, while the complementary centering interface 42 is positioned at the end of the shoe 2 in the form of a slope 7 which produces an inclination with respect to a horizontal plane, so that the surface of this slope 7 forms at least part of the surface upper of the shoe 2 and is oriented to be positioned opposite the rail 3 with which the shoe 2 is intended to cooperate.

According to an example of construction relating to another alternative embodiment according to the invention and capable of being combined with the other alternative embodiments previously detailed, the centering interface 41 involves at least one part made of a material of rigidity greater than that of the material forming the rest of the shoe 2 or the rail 3 which carries it. The production of a centering interface 41 having increased rigidity compared to the rest of the element, shoe 2 or rail 3, which carries it makes it possible to limit the problems of wear or degradation likely to appear following repeated friction during the interaction of these elements, shoe 2 and rail 3, with each other. This centering interface 41 being positioned at a first point of contact between the shoe 2 and the rail 3 in translation, the support structure of the shoe 2 or the rail 3 is protected against early degradation. As an example of construction, this centering interface 41 is carried by a surface of an element embedded or inserted in the structure of the support block which forms the shoe 2 or the rail 3 which carries this centering interface 41. Positioning of this element embedded in the structure of the shoe 2 or of the rail 3 which supports it is capable of being carried out by complementarity of shape and/or by pinching or blocking of a part of the embedded element between two juxtaposed parts which, in meeting participate in the production of at least part of the structure, of the shoe 2 or of the rail 3, which carries the centering interface 41.

According to an example of construction relating to another alternative embodiment according to the invention and capable of being combined with the previously detailed alternative embodiment, the complementary centering interface 42 carried by the end of the second of the two elements, rail 3 or shoe 2, which does not carry the centering interface 41 also involves at least one part made of a material of greater rigidity than that of the material forming the rest of the shoe 2 or the rail 3 which carries this complementary centering interface 42. As an example of construction, similarly to the centering interface 41, this complementary centering interface 42 is carried by a surface of a recessed element or inserted in the structure of the support block which forms the shoe 2 or the rail 3 which carries this complementary interface 42. The embedding and/or insertion are thus likely to be carried out by complementarity of shape and/or by pinching or blocking a part of the embedded/inserted element between two juxtaposed parts which, when joined together, participate in the production of at least part of the structure, of the shoe 2 or of the rail 3, which carries the centering interface 41.

According to an example of construction relating to a specific alternative embodiment of the invention and in particular previously detailed alternative embodiments, the centering interface 41 carried by a first of the two elements, shoe 2 or rail 3, is produced in a material of greater rigidity than that of the material of the second element, shoe 2 or rail 3, in cooperation with the first element. This reinforced rigidity of the centering interface 41 in relation to the complementary element which interacts with the element which supports this centering interface 41, also contributes to the reduction, or even the elimination, of wear or degradation problems. likely to appear following repeated friction as part of the interaction of two elements, shoe 2 and rail 3, with each other.

According to an example of construction relating to another alternative embodiment according to the invention and capable of being combined with the other alternative embodiments previously detailed, the shoe 2 comprises at least one through conduit which comprises at least one opening 5 at the level of its lower face 21 resting against the ground and/or at the level of one of its side faces 23 so as to prevent or limit retention of water and/or dirt. As part of an implementation of the invention, the shoe 2 which participates in carrying at least part of the rail 3 and the structure translated with this rail 3 is installed at the level of the ground surface. This particular positioning of shoe 2 leads it to be particularly exposed to dirt, dust and runoff. Also, the hollow reliefs and openings present at the level of the upper part of the shoe 2 create points likely to retain water and dust. The presence of such a through conduit thus allows the accumulation of dust or dirt to be evacuated. Likewise, such a through conduit allows easier evacuation of water and runoff, such as rainwater, through the structure of the shoe 2 so that it is possible to take advantage of such runoff to optimize the evacuation of accumulated dust or dirt. The positioning of at least one opening 5 at the level of the lower face 21 or side 23 of the shoe 2 makes it possible to carry out an easier evacuation of accumulated water or dirt without this evacuation interfering with the operation of the shoe 2 and in particular with the cooperation between the shoe 2 and the rail 3 in translation.

According to an example of construction relating to another alternative embodiment according to the invention and capable of being combined with the other alternative embodiments previously detailed, the shoe 2 is produced by the combination of several parts assembled together by complementarity of embedding and kept fixed by tightening along an axis substantially perpendicular to the anchoring surface of the shoe 2 to the ground. The production of a shoe 2 by cooperation of several parts makes it possible to carry out an easier construction of this shoe 2, in particular for the production of an arrangement forming a conduit passing through the structure of this shoe 2. The different parts of this crossing conduit are thus likely to take the form of grooves or holes arranged in the respective structures of each of the parts whose union forms the shoe 2. Likewise, this construction of the shoe 2 by a combination of different parts facilitates the production of one or more several housings 91, 92 respectively intended to receive at least part of a bearing 61 or of an element 8 forming a sliding surface 81, a centering interface 41 or even a complementary centering interface 42, as well as the integration , the assembly by insertion or embedding of such bearings 61, surface 81 or interfaces 41, 42 in such housings 91, 92 positioned between different parts 25, 26 constituting the shoe 2. Furthermore, the assembly and maintenance of the different parts 25, 26 joined together is preferably carried out by tightening the parts 25, 26 along a substantially vertical axis and/or perpendicular to the lower surface of the shoe 2 for its anchoring to the ground. Fixing along this axis, for example by one or more screws 27, makes it possible to take advantage of the force exerted by the rail 3 and the structure carried by the rail 3 against the upper surface of the shoe 2 so as to accentuate the maintenance of the different parts 25, 26 which constitute the shoe 2 between them. Such holding in clamping along a substantially vertical axis also makes it possible to reduce the risks of disassembly of the parts 25, 26 between them under the effect of the movement of the rail 3 against the shoe 2. As an additional note, it should be noted that the different parts 25, 26 of the shoe 2 are also preferably assembled by superposition with an interlocking by complementarity of the surface reliefs of the different parts 25, 26, so as to optimize the resistance to the lateral forces likely to be exerted, on the one hand, by the rail 3 in translation against the upper surface of the shoe 2 and, on the other hand, during impacts of the rail 3 against the shoe 2, for example at the level of centering interface 41 or complementary centering interface 42.

The invention also relates to an assembly comprising a gate 1 mounted sliding horizontally relative to at least one fixed supporting structure, characterized in that the assembly comprises at least one guide mechanism according to the invention.

According to an example of construction relating to a variant embodiment of the assembly according to the invention, the guide mechanism comprises at least two shoes 2 arranged in the plane of movement of the gate 1 and spaced apart from each other by a distance less than the length of the gate 1. Preferably, the distance which separates two consecutive shoes 2 is at most equal to the length of the gate 1 so as to ensure positioning of the gate 1 on at least two shoes 2 whatever the position of the gate 1 along its translational travel.

Of course, the invention is not limited to the embodiments described and shown in the accompanying drawings. Modifications remain possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Claims (11)

Guiding mechanism for a structure (1) moved in horizontal translation such as a gate, characterized in that the mechanism comprises:

• at least one shoe (2) comprising, on the one hand, an anchoring surface (21) to the ground and, on the other hand, at least one cooperation interface (22) with a rail (3) carried by the structure (1) moved, the cooperation interface (22) having a substantially rectilinear arrangement,
• a rectilinear rail (3) capable of being mounted under the lower face of the structure (1) moved in a manner substantially aligned with the axis of translation of the structure (1) moved, the rail (3) comprising, on the one hand , at least one cooperation interface (32) with the shoe (2) to support on the shoe (2) and, on the other hand, at least one centering interface (41) of the position of the rail (3) by relation to the hoof (2).

Guiding mechanism according to claim 1, characterized in that, in a plane in section perpendicular to the axis of translation and/or to the axis of the rail (3), the rail (3) and the shoe (2) have a complementarity of concavity and convexity. Guiding mechanism according to one of the preceding claims, characterized in that at least one cooperation interface (22) of the shoe (2) is produced by at least one bearing (61) whose axis of rotation is substantially perpendicular to the axis movement of the rail (3). Guiding mechanism according to one of the preceding claims, characterized in that at least one cooperation interface (22) of the shoe (2) is produced by at least one sliding surface (81), the sliding surface (81) being arranged in a plane comprising at least the translation axis of the rail (3). Guiding mechanism according to one of the preceding claims, characterized in that at least one end of the rail (3) or of the shoe (2) carries a centering interface (41) for the movement of the rail (3) relative to the shoe (2) , the centering interface (41) comprising, in a substantially horizontal plane, a substantially convex projecting arrangement. Guiding mechanism according to claim 5, characterized in that the centering interface (41) involves at least one part made of a material of greater rigidity than that of the material forming the rest of the shoe (2) or the rail (3 ) who wears it. Guiding mechanism according to claim 6, characterized in that the centering interface (4) carried by a first of the two elements, shoe (2) or rail (3), is made of a material of greater rigidity than that of the material of the second element, shoe (2) or rail (3), in cooperation with the first element. Guiding mechanism according to one of the preceding claims, characterized in that the shoe (2) comprises at least one through conduit which comprises at least one opening (5) at the level of its lower face (21) resting against the ground and/or at one of its side faces (23) so as to prevent or limit retention of water and/or dirt. Guiding mechanism according to one of the preceding claims, characterized in that the shoe (2) is produced by the combination of several parts assembled together by interlocking complementarity and held fixed by clamping along an axis substantially perpendicular to the anchoring surface of the shoe (2) to the ground. Assembly comprising a gate (1) mounted to slide horizontally relative to at least one fixed supporting structure, characterized in that the assembly comprises at least one guide mechanism according to one of claims 1 to 9. Assembly according to claim 10, characterized in that the guide mechanism comprises at least two shoes (2) arranged in the plane of movement of the gate (1) and spaced apart by a distance less than the length of the gate (1) .