WO2021084426A1

WO2021084426A1 - Articulated sliding gate and ground sliding device for articulated sliding gates

Info

Publication number: WO2021084426A1
Application number: PCT/IB2020/060074
Authority: WO
Inventors: Cristian REVELIN
Original assignee: F A C S.R.L.
Priority date: 2019-10-30
Filing date: 2020-10-28
Publication date: 2021-05-06
Also published as: IT201900020088A1; AU2020373269A1; EP3947884A1

Abstract

The present invention relates to an articulated sliding gate (10), comprising: - an articulated barrier (11), comprising at least two sections (11a, 11b) mutually articulated with hinging means with vertical axis (Y); - a plurality of rest and sliding wheels (12, 13) for the articulated barrier (11), said rest and sliding wheels (12, 13) being connected to a respective section (11a, 11b) each by means of a wheel-holder element (15) and by means of push means of the wheel-holder element (15) towards a sliding guide (14); - a sliding guide (14) for the rest and sliding wheels (12, 13). The push means of a wheel-holder element (15) comprise: - a bearing body (16) constrained to a lower portion of a section (11a, 11b); - hinging means (17) for the rotatable constraint of the wheel-holder element (15) with respect to the bearing body (16) around an axis of rotation (X2) parallel to the axis of rotation (X1) of the wheel (12, 13); - elastic push means (18) configured to push the wheel-holder element (15) to rotate around the axis of rotation (X2) so that the rest and sliding wheel (12, 13) moves away from the bearing body (16). The bearing body (16) is constrained to the lower portion of a section (11a, 11 b) with rotatable constraint means (80) with vertical axis.

Description

- l -

ARTICULATED SLIDING GATE AND GROUND SLIDING DEVICE FOR ARTICULATED SLIDING GATES.

DESCRIPTION

The invention relates to an articulated sliding gate. The invention also relates to a ground sliding device particularly for articulated sliding gates.

Today a type of sliding gates is known and increasingly widespread, in particular for outdoor, known as articulated gates, which are to be intended to be with manual actuation or motorized. Such an articulated sliding gate generally comprises a barrier composed of a plurality of sections, each of which in the form of a chassis, or plate, or other similar element, arranged one after the other and articulated so that two side by side sections can rotate one relative to the other around a vertical axis.

An articulated sliding gate also comprises sliding wheels and guide means for said wheels, for example a rail and at least two columns, configured to support and guide the barrier according to a predetermined path, and possibly, but not exclusively, motorization means, for example an electric gearmotor associated with a rack-pinion system, for actuating the movement of the barrier between an opening position and a closing position. Each section has at least one wheel at the bottom.

A particular type of articulated gates is known today in which the sliding wheels are connected, for example rotatably with respect to a vertical axis, to a piston element, which piston element is inserted in an upright which, in turn, is part of the section of the barrier. A helical spring, configured to push the piston element downwards, and therewith the sliding wheel constrained thereto, is placed to act on said piston element.

Thanks to a similar system, if as a result of a deformation of the soil a difference in height is produced between different points of the same rail, or the rail is arranged in one or more stretches with an inclination or at a height different from the optimal one, the wheel is pushed downwards by the helical spring so as to remain in contact with the rail guiding it.

In this way, the risk of gate derailment is avoided in the areas where the rail produces a curve in the path of the articulated gate; in fact, if a wheel of a section of the barrier were raised and external to the guide rail, that section could continue its forward movement due to inertia outside the predetermined path causing a serious malfunction of the gate as well as a danger for a person nearby.

Such an anti-derailment safety system, albeit appreciated, has an important drawback linked to the fact that its installation requires the presence of a piston element which must be housed inside a tubular upright.

For reasons of visual impact, said tubular upright is generally constituted by the lower stretch of an upright of each section of the articulated barrier.

The installation of such a safety system, with the mounting of a piston element, a helical spring and a rest abutment for the helical spring inside an upright for each of the sections of the articulated barrier, is very expensive in terms of labour and speed of intervention in case of malfunction of a spring, since for the removal of a wheel it is necessary to either lift or tilt a section after having separated it from the two contiguous sections, both of which operations are extremely expensive in terms of time and labour.

Another drawback of said known anti-derailment system is constituted by the fact that it can only be installed on barriers whose sections have at least one tubular upright capable of accommodating in its inside the piston element carrying the wheel, the helical spring and the abutment, the latter being configured to receive the helical spring for resting; this makes it impossible to mount such an anti-derailment system on sections of barriers which do not have tubular elements of suitable dimensions at the vertical sides.

Furthermore, said anti-derailment system cannot be installed on gates already in place and without a lower hole at the upright designed to accommodate the abutment for the spring, the helical spring and the piston element, except after the specific execution of said lower hole.

The task of the present invention is to develop an articulated sliding gate capable of obviating the aforementioned drawbacks and limitations of the known art.

Another task of the invention is to develop a ground sliding device particularly for articulated sliding gates.

In particular, an object of the invention is to develop an articulated sliding gate that is simple to install and safe with respect to the derailment risk.

Another object of the invention is to develop a sliding device capable of ensuring an effective anti-derailment system. A further object of the invention is to develop a compact and easy to install sliding device, even on already existing gates.

The above mentioned task and objects are achieved by an articulated sliding gate according to claim 1, as well as by a sliding device particularly for articulated sliding gates according to claim 15.

Further characteristics of the articulated sliding gate according to claim 1 are described in the respective dependent claims.

The aforesaid task and objects, together with the advantages that will be mentioned hereinafter, are indicated by the description of an embodiment of the invention, which is given by way of non-limiting example with reference to the attached drawings, where:

- Figure 1 represents a perspective view of an articulated sliding gate according to the invention, in a first position of use;

- Figure 2 represents a further perspective view of the articulated sliding gate according to the invention, in a second position of use;

- Figure 2a represents a cross section of a detail of the articulated sliding gate according to the invention;

- Figure 3 represents a side view of a portion of the articulated sliding gate according to the invention;

- Figure 4 represents a first perspective view of a sliding device according to the invention in a first embodiment variant thereof;

- Figure 5 represents a second perspective view of the sliding device of Figure 4;

- Figure 6 represents a bottom view of the sliding device according to the invention;

- Figure 7 represents a sectional side view, according to the section line VII-VII of Figure 6, of the sliding device of Figures 4 to 6, in a first operating position;

- Figure 8 represents a side view of the sliding device in the operating position of Figure 7;

- Figure 9 represents a front view of the sliding device in the operating position of Figures 7 and 8;

- Figure 10 represents the same sectional side view of Figure 7, with the sliding device according to the invention in a second operating position;

- Figure 11 represents a perspective view of a sliding device according to the invention in a second embodiment variant;

- Figure 12 represents another perspective view of the sliding device of Figure 11;

- Figure 13 represents a sectional side view of the sliding device according to the invention in a second embodiment variant thereof, in a first operating position;

- Figure 14 represents a side view of the sliding device of Figure 13;

- Figure 15 represents a side view of the sliding device of Figures 13 and 14 in a second operating position; - Figure 16 represents the same sectional side view of Figure 13, with the sliding device according to the invention, in a second embodiment variant thereof, in a second operating position.

With reference to the mentioned figures, an articulated sliding gate according to the invention is indicated as a whole with the number 10. Such an articulated sliding gate 10 comprises:

- an articulated barrier 11, in turn comprising at least two sections 11a and 11b mutually articulated with hinging means with vertical axis Y; in the figures the sections are indicated with 11a, 11b, 11c and a generic last section is indicated with 11z; - a plurality of rest and sliding wheels for the articulated barrier 11, which wheels are indicated for example by the numbers 12, 13, 13a, 13b; at least some of the rest and sliding wheels 12, 13, 13a, 13b are connected to a respective section 11a, 11b, 11c, 11z, each wheel by means of a wheel- holder element 15 to which a wheel 12, 13, 13a, 13b is rotatably constrained to rotate with respect to a first axis of rotation X1, and by means of push means for pushing the wheel-holder element 15 towards a sliding guide 14;

- a sliding guide 14 for the rest and sliding wheels 12, 13, 13a, 13b; said sliding guide 14 is to be intended as configured to cooperate with the wheels in order to define a movement trajectory for the articulated barrier

11

The peculiarity of the articulated sliding gate 10 according to the invention lies in the fact that the push means of a wheel-holder element 15 comprise:

- a bearing body 16 constrained to a lower portion of a section 11a, 11b; - hinging means 17 for the rotatable constraint of the wheel-holder element 15 with respect to the bearing body 16 around a second axis of rotation X2, said second axis of rotation X2 being parallel to the first axis of rotation X1 of the rest and sliding wheel 12, 13, 13a, 13b;

- elastic push means 18, clearly visible in Figures 6 and 7, configured to push the wheel-holder element 15 to rotate around the axis of rotation X2 so that the rest and sliding wheel 12, 13, 13a, 13b moves away from the bearing body 16.

In the embodiment described herein of the articulated sliding gate 10 according to the invention, to be intended as an example and not a limitation of the invention itself, said articulated sliding gate 10 comprises an articulated barrier 11 which in turn comprises for example a number of six sections 11a, 11b, 11c, 11z.

Each of such sections 11a, 11b, 11c, 11z comprises a frame-like chassis 20.

A frame-like chassis 20 comprises two lateral uprights 21 and 22, an upper crosspiece 23 and a lower crosspiece 24.

As can be clearly seen from all the figures, the bearing body 16 is constrained to the outside of a lower portion of a section 11a, 11b, that is, completely outside to a lower portion of a section 11a, 11b; thanks to this technical solution, each section 11a, 11b, 11z can be more easily installed than articulated barriers of the known type, which require introducing a special piston with helical spring inside a tubular upright of the same section as the barrier.

In particular, the bearing body 16 is fixed at the bottom and externally to a lower portion of a section 11a, 11b.

In particular, in the embodiment examples proposed herein, the bearing body 16 is fixed at the bottom and externally to a lower crosspiece 24 of a section

11a, 11b, 11c, 11z

In general, the embodiment variants, not illustrated for simplicity’s sake, in which the sections of the barrier comprise an unframed chassis, i.e. a partial chassis comprising only some of said lateral uprights, upper crosspiece and lower crosspiece, are also to be intended as included in the invention.

In the present embodiment, the frame-like chassis 20 consists in tubular elements, i.e. the two lateral uprights 21 and 22, the upper crosspiece 23 and the lower crosspiece 24, which each consists in a tubular element.

In general, the embodiment variants, not illustrated for simplicity’s sake, in which the sections of the barrier comprise a frame-like or partial chassis, consisting in solid elements and not tubular elements, are also to be intended as included in the invention; each solid element can be, for example, a flat bar, or a non-tubular shaped profile, for example a shaped profile with an ‘U, or ‘S’, or ‘C’, or T cross sections or other similar sections.

In general, the embodiment variants, not illustrated for simplicity’s sake, in which the sections of the barrier comprise a frame-like or partial chassis, consisting in a combination of flat elements, and not in tubular elements, are also to be intended as included in the invention.

The hinging means between two consecutive sections, for example a first section 11a and a second section 11b, clearly visible in Figures 1 to 3, comprise at least one hinge 25, and for example two hinges 25, one lower and one upper.

In the present embodiment, each of all the rest and sliding wheels 12, 13, 13a, 13b is connected to a respective section 11a, 11b, 11c, 11z by means of a wheel-holder element 15, to which a wheel 12, 13, 13a, 13b is rotatably constrained to rotate with respect to a first axis of rotation X1, and by means of push means of the wheel-holder element 15 towards a sliding guide 14.

The embodiment variants in which only some rest and sliding wheels are connected to a respective section by means of a wheel-holder element and by means of push means of the wheel-holder element towards the sliding guide are also to be intended as included in the invention.

In the present embodiment, the first section 11a has two rest and sliding wheels 12, whereas all the other sections from the second section 11b to the last section 11z have a single rest and sliding wheel 13, 13a, 13b.

The variants not illustrated, in which also the sections from the second 11b to the last one 11z each have two rest and sliding wheels, are also to be intended as included in the invention.

All the variants not illustrated in which each of the sections from the first 11a to the last one 11z have at least one rest and sliding wheel 12, 13, 13a, 13b are also to be intended as included in the invention.

The articulated sliding gate 10 also comprises two columnar elements, a first columnar element 27 and a second columnar element 28, which define between themselves a gate transit gap, designed to be reversibly closed by the articulated barrier 11. The articulated sliding gate 10 according to the invention is to be intended that it can be configured in such a way that the articulated barrier 11 can be moved manually, or alternatively in such a way that the articulated barrier 11 is moved with actuation means, for example of the motorized type or of the automated type with fluid actuators.

In the embodiment of the invention described herein, to be intended as an example and not a limitation of the invention itself, the articulated sliding gate 10 also comprises actuation means 30 for the articulated barrier 11.

Said actuation means 30 comprise, for example, a gearmotor unit 31.

Said gearmotor unit 31 is configured for the rotation of a pinion, not represented for simplicity’s sake, in turn meshed with a rack 32 integral with the articulated barrier 11.

In particular, the rack 32 comprises a plurality of rack stretches 32a, 32b, 32c, highlighted in Figure 3, each of which rigidly fixed to a corresponding section lla, 11b, 11c, Hz of the articulated barrier 11.

At the first columnar element 27 end-stroke elements 33 and 34 are positioned, to be intended as of a per se known type, for example a first upper end-stroke element 33 and a second lower end-stroke element 34.

The gearmotor unit 31 is positioned at the second columnar element 28, as clearly visible in Figures 1 and 2.

Also a group of guide wheels 35 is positioned at the second columnar element 28, configured to support the articulated barrier 11, and thus the sections 11a, llb, 11c, 11z, in vertical position during the translation movements, and to cooperate in guiding the articulated barrier 11 itself and the sections thereof. Said group of guide wheels 35 is to be intended of a known type.

In the embodiment described herein, obviously not limiting the invention, the group of guide wheels 35 comprises a plurality of guide wheels, also known as ‘olives’ in the jargon of the technical sector, which are rotatably constrained to a bearing plate so as to rotate along a vertical axis of rotation, and are positioned in such a way as to receive with a sliding rest two opposite faces of said upper crosspieces 23.

Alternatively, said group of guide wheels can also comprise only two guide wheels rotatably constrained to a plate or to a bracket, in turn integral with the columnar element; said guide wheels are placed so as to slide inside a guide profile with a ‘U’ or Ό’ shaped section, which guide profile is in turn fixed to the flank of a section, or on the upper edge of a section.

Still alternatively, the group of guide wheels can comprise one or more guide wheels for each section of the barrier, thus each section of the barrier has one or more guide wheels, with a guide profile having a ‘U’ or Ό’ cross section which is fixed to a columnar element.

The group of guide wheels is to be intended to be also of another type according to the needs and technical requirements.

In the present embodiment, the sliding guide 14 for the rest and sliding wheels 12, 13, 13a, 13b defines a movement trajectory for the articulated barrier 11 which comprises two straight stretches 14a and 14b, converging, and a curved joining stretch 14c.

In the present embodiment, the sliding guide 14 has, over its entire length, a base portion 36, for the fixing to the soil, and a central portion 37, raised.

The rest and sliding wheels 12, 13, 13a, 13b have a perimeter groove 38, also known as ‘slot’, shaped for the rest of the wheel itself to the central portion 37 of the sliding guide 14, as well schematized in Figure 2a.

Advantageously, but not limitedly, the perimeter groove 38 is configured to accommodate 50% - 60% of the central portion 37 in the direction of the height thereof.

Obviously, it should be intended that the perimeter groove of a wheel can also feature other shapes and proportions depending on the technical needs and requirements, and correspondingly also the section of the slide guide.

The shaping of the cross section of the sliding guide 14 and of the radial section of the rest and sliding wheels 12, 13, 13a, 13b is to be intended that can be different and technically equivalent according to the needs and specific technical requirements of use.

In the present non-limiting embodiment of the invention, the wheel-holder element 15, clearly visible in Figures 4 to 16, consists in a first bracket 40.

Said first bracket 40 is fork-shaped, and comprises two lateral walls 41 and a central connecting portion 42 between the lateral walls 41; these peculiarities are clearly visible in Figures 6 to 9.

In particular, in the present non-limiting embodiment of the invention, the first bracket 40 consists in a ‘U’-shaped bent sheet metal body.

The rest and sliding wheel, for example the wheel 12 in Figures 4 to 10, is housed between the two opposite lateral walls 41. Each rest and sliding wheel 12, and equally each wheel 13, 13a and 13b, is crossed by a pin 43.

Each wheel 12, 13, 13a, 13b comprises, in a known way, means for reducing friction, for example a ball bearing 44.

The pin 43 is fixed by the ends thereof to the opposite lateral walls 41 of the first bracket 40.

In an alternative embodiment, not illustrated for simplicity’s sake, the first bracket is ‘U or T shaped; in this case, the wheel pin protrudes in a cantilever manner from a single vertical wall.

In the present embodiment, the bearing body 16 comprises a second bracket

45.

Said second bracket 45 is fork-shaped and comprises two lateral walls 46 and a central portion 47 for the connection between the lateral walls 46; these peculiarities are clearly visible in Figures 6 to 9.

In particular, in the present, non-limiting embodiment of the invention, the second bracket 45 consists in a ‘U’-shaped bent sheet metal body.

Said second bracket 45 of the bearing body 16 is configured in such a way that the first bracket 40 of the wheel-holder element 15 is housed between the two opposite lateral walls 46.

In the embodiment of the invention described herein, by way of non-limiting example of the invention itself, the hinging means 17, configured for the rotatable constraint of the wheel-holder element 15 with respect to the bearing body 16 around a second axis of rotation X2, comprise a pin with horizontal axis, for example a screw 48 with a corresponding nut 49, arranged to pass through corresponding facing through holes defined on the lateral walls 41 and 46 of the first 40 and second 45 brackets.

In an alternative that is not illustrated for simplicity’s sake, the hinging means comprise, with the function of pin, a cylindrical body different from the shank of a screw, for example a plug, or a turned pin, or another similar and functionally equivalent component.

An interaxis distance A along the interaxis line Z, shown in Figure 10, is defined between the first axis of rotation X1 of the wheel 12 and the second axis of rotation X2 of the wheel-holder element 15 with respect to the bearing body 16.

In the present non-limiting embodiment of the invention, the elastic push means 18, clearly visible in Figures 6, 7 and 10, configured to push the wheel- holder element 15 to rotate around the axis of rotation X2 so that the rest and sliding wheel 12, 13, 13a, 13b moves away from the bearing body 16, comprise an elastic spreader element 50 having two opposite end portions 50a and 50b in turn configured to push one against the wheel-holder element 15 and the other against the bearing body 16, each one according to a different orientation and, at least partially, opposite to the other.

In particular, in the present embodiment, the elastic spreader element 50 consists in a torsion helical spring.

This torsion helical spring allows optimizing the spaces.

Said torsion helical spring, i.e. the spreader element 50, is positioned so as to surround the shank of the screw 48.

As clearly visible in Figures 7, 10, 13 and 16, a first end portion 50a is positioned against a first rest body 51 integral with the bearing body 16.

This first rest body 51 consists, for example and not exclusively, in a front plate rigidly but removably fixed to the bearing body 16.

Said front plate consists for example in a sheet metal element with lateral fins fixed to the lateral walls 46 of the second bracket 45 by means of threaded elements.

The second end portion 50b is positioned against a second rest body 52 integral with the wheel-holder element 15.

This second rest body 52 consists, for example and not exclusively, in a small bar rigidly fixed transversely between the two opposite lateral walls 41 of the first bracket 40.

The second end portion 50b of the spreader element 50 thus operates pushing on the second rest body 52, which transmits the force to the first bracket 40 of the wheel-holder element 15; since the first bracket 40 is free to rotate around the second axis of rotation X2, it under the action of the spreader element 50, i.e. of the torsion spring, is pushed by the second end portion 50b to rotate as exemplified in Figure 10.

The distance in the vertical direction between the two axes of rotation X1 and X2 increases in proportion to the rotation of the wheel-holder element 15 with respect to the bearing body 16.

Figure 7 highlights a first distance A1 in the vertical direction between the two axes of rotation X1 and X2, while Figure 10 highlights a second distance A2; said second distance in the vertical direction between the two axes of rotation X1 and X2 is greater than the first distance A1 by virtue of the occurred rotation of the wheel-holder element 15 with respect to the bearing body 16.

In the operating position of Figure 10, the rest and sliding wheel 12 is therefore further away from the bearing body 16 compared to the position of use of Figure 7.

In this way, the articulated sliding gate 10 according to the invention is able to adapt to possible deformations of the guide in the direction of its height, and in particular it is able to adapt to guide situations that for some stretches tilts downwards due to unexpected irregularities of the soil on which it rests.

In fact, thanks to the assembly comprising the wheel-holder element 15, the bearing body 16, the hinging means 17 and the elastic push means 18, each of the wheels 12, 13, 13a, 13b is constantly pushed towards the guide 14, ensuring the correct and safe coupling of the wheel to the guide 14 and thus preventing the articulated barrier 11 from derailing from the same guide 14. Alternatively, the elastic push means 18 can comprise one or more linear push elements, such as for example one or more helical compression springs interposed between the first rest body 51 and the second rest body 52 or other similar and equivalent elastic push means. In an alternative embodiment, not illustrated for simplicity’s sake, the elastic push means 18 comprise one or more elastic push elements interposed between the central portion 42 of the first bracket 40 of the wheel-holder element 15 and the central portion 47 of the second bracket 45 of the bearing body 16. Advantageously, but not necessarily, limiting means 60 are also present which are configured to limit the rotation of the wheel-holder element 15 around the axis X2.

By way of non-limiting example of the invention, said limiting means 60 comprise at least one stop appendage 61 protruding laterally from the wheel- holder element 15, and inserted in a guide slot 62, where the ends of the guide slot 62 create the rotation limits for the wheel-holder element 15.

In particular, in the present embodiment, the limiting means 60 comprise two opposite stop appendages 61, each of which defined by one of the two opposite ends of the small bar which constitutes the second rest body 52, as visible in Figure 6. Again advantageously, shock and vibrations absorbing means 70 are interposed between the bearing body 16 and the wheel-holder element 15.

Said shock and vibrations absorbing means 70 comprise, for example, at least one plastic cap 71, for example two caps 71, fixed to the central portion 42 of the first bracket 40, as illustrated in Figures 7 and 10.

In the embodiment of Figures 3 to 10, the bearing body 16 is constrained to the lower portion of a section with rigid fixing means.

Said rigid fixing means comprise for example one or more shimming plates 75 and threaded elements 76 for fixing the central portion 47 of the bearing body 16 to a lower portion of a section of the articulated barrier 11, for example to the first section 11a.

In the embodiment represented in Figures 11 to 16, the bearing body 16 is constrained to the lower portion of a section with rotatable constraint means 80 with vertical axis.

Said rotatable constraint means 80 comprise, for example:

- a fixing plate 81 and threaded elements 82, for the fixing to a lower portion of a section of the articulated barrier 11;

- a pin with vertical axis 83, for example a screw;

- at least one thrust bearing 84 interposed between the central portion 47 of the second bracket 45 of the bearing body 16 and the fixing plate 81, placed so as to surround the pin with vertical axis 83.

Conveniently, the rotatable constraint means 80 comprise:

- a first thrust bearing 84 interposed between the central portion 47 of the second bracket 45 of the bearing body 16 and the fixing plate 81;

- and a second thrust bearing 85, placed above the fixing plate 81 and locked against it with one or more threaded clamping elements 86 and 87, coupled to the pin 83.

The rest and sliding wheel 13, like the wheels 13a and 13b, are therefore pivoting wheels able to rotate with respect to the section 11b, 11c, 11z to which they are associated.

Figures 13, 14, 15 and 16 show two different operating positions of said pivoting wheels, similarly to what has already been described and represented in Figures 7 and 10 for the non-pivoting wheel 12.

In particular, as clearly visible in Figures 11 to 16, and in particular in Figure 13, in the operating position in which the wheel-holder element 15 is in contact with the bearing body 16, the pin 43 of the wheel 13 is arranged below and at the pin with vertical axis 83 of the rotatable constraint means 80.

This vertical axis is highlighted by the line X3.

In particular, when the wheel-holder element 15 is in contact with the bearing body 16, the vertical axis X3 of the pin with vertical axis 83 crosses the cylindrical surface of the pin 43.

Still in particular, when the wheel-holder element 15 is in contact with the bearing body 16, the vertical axis X3 of the pin with vertical axis 83 intersects the axis of rotation X1 of the pin 43.

Such a peculiar position of the pin 43 of the wheel 13 allows achieving an optimal load transmission from an overlying section 11b, 11c to the wheel 13 itself through the rotatable constraint means 80, without a torque developing between the vertical axis X3 of the pin with vertical axis 83 and the axis of horizontal rotation X1 of the wheel 13 which may compromise, over time, the integrity of the components.

Still in particular, the distance B1 between the vertical axis X3 and the axis of horizontal rotation X1 can vary between 0 and 10 millimeters.

A ground sliding device 90 and 190 for articulated sliding gates is also the object of the invention.

Said ground sliding device 90 and 190 comprises:

- a rest and sliding wheel 12, 13, 13a, 13b;

- a wheel-holder element 15, to which a wheel 12, 13, 13a, 13b is rotatably constrained to rotate with respect to a first axis of rotation X1 ;

- a bearing body 16 constrained to a lower portion of a section 11a, 11b;

- hinging means 17 for the rotatable constraint of the wheel-holder element 15 with respect to the bearing body 16 around a second axis of rotation X2, said second axis of rotation X2 being parallel to the first axis of rotation X1 of the rest and sliding wheel 12, 13, 13a, 13b;

In a first embodiment variant of the ground sliding device according to the invention, represented in Figures 4 to 10 and indicated there by the number 90, said ground sliding device 90 comprises means for rigidly fixing the bearing body 16 to a lower portion of a section of an articulated barrier 11.

In a second embodiment variant of the ground sliding device according to the invention, represented in Figures 11 to 16 and indicated there by the number 190, said ground sliding device 190 comprises constraint means rotatable around a vertical axis for constraining said bearing body 16 to a lower portion of a section of an articulated barrier 11.

The elements that make up said ground sliding device 90 and 190, that is the rest and sliding wheel 12, 13, 13a, 13b, the wheel-holder element 15, the bearing body 16, the hinging means 17, the elastic push means 18, the rigid fixing means and the constraint means rotatable around a vertical axis 80 are to be intended as corresponding to what has already been described above. Practically, it has been established that the invention achieves the intended task and objects.

In particular, with the invention an articulated sliding gate has been developed that is easy to install and safe with respect to the derailment risk, thanks to the push system on the wheel-holder element which ensures the continuous automatic adaptation of the rest and sliding wheels to the effective position of the guide.

In addition, along with the invention a sliding device capable of ensuring an effective anti-derailment system has been developed.

Furthermore, with the invention a compact and easy-to-install sliding device, even on existing gates, easy to assemble and disassemble since there is no element to fit into an upright, like in the systems of known type, has been developed.

Furthermore, such a ground sliding device according to the invention can be fixed in any position under a section of the articulated gate, even away from an upright.

The invention thus conceived is susceptible to many modifications and variants, all falling within the same inventive concept; furthermore, all details can be replaced by other equivalent technical elements.

In practice, any components and materials can be used as long as they are compatible with the specific use, as well as any dimension and contingent shape thereof, according to requirements and the prior art.

Where the characteristics and techniques mentioned in any claim are followed by reference signs, such reference signs are to be intended as having been added for the sole purpose of increasing the intelligibility of the claims and, consequently, such reference signs have no limiting effect on the interpretation of each element identified by way of example by such reference signs.

Claims

1) An articulated sliding gate (10), comprising:

- an articulated barrier (11), comprising at least two sections (11a, 11b) mutually articulated with hinging means with vertical axis (Y); a plurality of rest and sliding wheels (12, 13) for said articulated barrier (11), at least part of said rest and sliding wheels (12, 13) being connected to a respective section (11a, 11b) each by means of a wheel-holder element (15), to which a wheel (12, 13) is rotatably constrained so as to rotate with respect to an axis of rotation (X1), and by means of push means of said wheel-holder element (15) towards a sliding guide (14);

- a sliding guide (14) for said rest and sliding wheels (12, 13), characterized in that said push means of a wheel-holder element (15) comprise:

- a bearing body (16) constrained to a lower portion of a section (11a, 11b); hinging means (17) for the rotatable constraint of said wheel-holder element

(15) with respect to said bearing body (16) around an axis of rotation (X2), said axis of rotation (X2) being parallel to said axis of rotation (X1) of said wheel (12, 13);

- elastic push means (18) configured to push said wheel-holder element (15) to rotate around said axis of rotation (X2) so that said rest and sliding wheel

(12, 13) moves away from said bearing body (16), said bearing body (16) being constrained to said lower portion of a section (11a, 11b) by means of rotatable constraint means (80) with vertical axis.

2) The articulated sliding gate according to claim 1, characterized in that said bearing body (16) is constrained to the outside of a lower portion of a section (11a, 11b).

3) The articulated sliding gate according to one or more of the preceding claims, characterized in that said bearing body (16) is fixed at the bottom and externally to a lower portion of a section (11a, 11 b). 4) The articulated sliding gate according to one or more of the preceding claims, characterized by having limiting means (60) configured to limit the rotation of the wheel-holder element (15) around the axis (X2).

5) The articulated sliding gate according to one or more of the preceding claims, characterized in that shock and vibrations absorbing means (70) are interposed between said bearing body (16) and said wheel-holder element (15).

6) The articulated sliding gate according to one or more of the preceding claims, characterized in that, in the operating position in which the wheel- holder element (15) is in contact with the bearing body (16), a pin (43) of said wheel (13) is arranged below and at a pin with vertical axis (83) of said rotatable constraint means (80).

7) The articulated sliding gate according to claim 1, characterized by comprising actuation means (30) for the articulated barrier (11 ).

8) The articulated sliding gate according to one or more of the preceding claims, characterized in that said wheel-holder element (15) consists in a first bracket (40), said first bracket (40) being fork-shaped and comprising two lateral walls (41) and a central portion (42) for the connection between the lateral walls (41), the rest and sliding wheel (12) being housed between the two opposite lateral walls (41). 9) The articulated sliding gate according to one or more of the preceding claims, characterized in that said bearing body (16) comprises a second bracket (45), said second bracket (45) being fork-shaped, and comprising two lateral walls (46) and a central portion (47) for the connection between the lateral walls (46), said second bracket (45) of the bearing body (16) being configured in such a way that the first bracket (40) of the wheel-holder element (15) is housed between the two opposite lateral walls (46).

10) The articulated sliding gate according to one or more of the preceding claims, characterized in that said hinging means (17) comprise a pin with horizontal axis, for example a screw (48) with a corresponding nut (49), arranged to pass through corresponding facing through holes defined on the lateral walls (41 , 46) of the first (40 ) and second (45) brackets.

11 ) The articulated sliding gate according to one or more of the preceding claims, characterized in that said elastic push means (18) comprise an elastic spreader element (50) having two opposite end portions (50a, 50b) each configured to push according to a different and, at least partially, opposite orientation.

12) The articulated sliding gate according to the preceding claim, characterized in that said elastic spreader element (50) consists in a torsion helical spring. 13) The articulated sliding gate according to one or more of the preceding claims, characterized in that said first end portion (50a) is positioned against a first rest body (51) integral with the bearing body (16).

14) The articulated sliding gate according to one or more of the preceding claims, characterized in that said second end portion (50b) is positioned against a second rest body (52) integral with the wheel-holder element (15).

15) A ground sliding device (90, 190) for articulated sliding gates, comprising:

- a rest and sliding wheel (12, 13);

- a wheel-holder element (15), to which a wheel (12, 13) is rotatably constrained to rotate with respect to a first axis of rotation (X1 );

- a bearing body (16) constrained to a lower portion of a section of a barrier of an articulated gate;

- hinging means (17) for the rotatable constraint of the wheel-holder element (15) with respect to the bearing body (16) around a second axis of rotation (X2), said second axis of rotation (X2) being parallel to the first axis of rotation (X1 ) of the rest and sliding wheel (12, 13);

- elastic push means (18) configured to push the wheel-holder element (15) to rotate around the axis of rotation (X2) so that the rest and sliding wheel (12, 13) moves away from the bearing body (16), characterized by comprising rotatable constraint means (80) around a vertical axis for the constraint of said bearing body (16) to a lower portion of a section of an articulated barrier (11 ).