ES2941761T3 - Trolley for a cantilever sliding door - Google Patents

Abstract

Trolley (1) for cantilever sliding gate comprising at least one support base (2) intended to be fixed to the ground, extended in at least one direction of extension (Y), at least two hooking elements (4) mounted on the support base (2) and placed one after the other along the extension direction (Y), several wheels (5), which are freely mounted on the hooking elements (4) and are intended to be inserted into the guide rail (102) for slidingly supporting the barrier frame (101), adjustment means (6), which define multiple fixing positions along the extension direction (Y) and are configured to fix at least one coupling element (4) of the coupling elements (4) in a fixing position selected from the aforementioned fixing positions. (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Trolley for a cantilever sliding door

Scope

The present invention relates to a carriage for a cantilevered sliding door.

The invention belongs to the field of the production of accessories for doors, that is to say, doors intended to control the access passage, accessible for vehicles or accessible for pedestrians, to a property, to a work, company, building or garden.

The present trolley is advantageously intended to be installed on cantilever sliding doors even of considerable size, especially for accessing industrial buildings, or buildings of limited dimensions for residential purposes.

Background

Cantilever sliding doors of the known type conventionally comprise a movable barrier structure, intended to be positioned to at least partially close an opening (such as the entrance to a house) and having a guide rail attached to the lower part. longitudinal extending substantially the entire length of the barrier structure itself. Under the guide rail, normally there are at least two carriages whose support structure is rigidly anchored to the ground in separate and aligned positions along the sliding direction of the door.

On the support structure of each trolley, there are multiple free wheels with a substantially horizontal free rotation axis, on which the weight of the door falls. Said wheels rotate inside the guide rail of the door to allow it to slide during its opening and closing movement.

More clearly, the barrier structure moves, translating in a horizontal direction, sliding on the free wheels of the carriages between an open position, in which it at least partially releases the opening, and a closed position, in which it is placed as a barrier of the enclosure, preventing access to it to unwanted people and/or vehicles. Conventionally, the movement of the door is obtained in an automated manner, by means of a motor and transmission means close to the door and operatively associated to the barrier structure.

Said trolleys of the known type have shown in practice that they are not without drawbacks.

A first drawback is related to the fact that an optimal installation of the trolleys on the ground to allow the sliding of the barrier structure is particularly difficult in the case of uneven ground, since it is necessary for the operator assigned for the installation to level the land.

Another drawback lies in the fact that the installation of the carriages is long and complex for the operator, since it is necessary, in particular, to carry out, in a very precise way, the alignment of the carriages to guarantee a correct movement of the structure of gate barrier.

In order to overcome, at least partially, the drawbacks mentioned above, a guide system provided with an elongated support base intended to be fixed to the ground and which has two carriages mounted at its ends separated from each other and substantially aligned, was introduced on the market. , each provided with free wheels intended to be inserted into the guide rail of the door.

However, the latest known type of solution has also shown that it is not without drawbacks in practice.

The main drawback lies in the fact that the system of the known type described above is not adapted to be installed on doors of different shapes and sizes, therefore it requires a plurality of models, each one intended to be installed with a corresponding door model.

The need to produce and store a large number of different models increases the production and management costs of the doors and the trolleys themselves.

Another drawback lies in the fact that, in the event of a failure of a single component of the system, in order to repair said damage, it is necessary to disassemble the entire system and replace it with a new one, which increases maintenance costs.

Patent application WO 2012/095650 A2 describes a door of a known type in which the base for the trolleys comprises a support structure that has multiple mounting locations provided with holes to fix the corresponding trolleys by means of screws. Patent application DE 3049512 A1 describes another tube of a known type that has a lower base bar, on which two carriages are mounted, one of which can be fixed in different positions along the base bar itself.

These latest solutions of the known type are also not without drawbacks, since they are not very versatile and difficult to install, in particular due to the large dimensions of the base elements.

Presentation of the invention

In this situation, the problem underlying the present invention is therefore to eliminate the drawbacks of the state of the art known up to now. This problem is solved by arranging a carriage for a cantilever sliding door that allows the carriage to be applied in a versatile manner in different application conditions, in particular to doors with different sizes and weights, according to claim 1.

Another objective of the present invention is to provide a carriage for a cantilever sliding door, which is capable of guaranteeing optimal alignment with respect to the direction of movement of the door, in any operating situation, even on uneven ground.

Another object of the present invention is to provide a cantilever sliding door trolley that is structurally simple, inexpensive to manufacture, and totally reliable in operation. Another objective of the present invention is to present a procedure for installing a carriage for a cantilevered sliding door that is fast, easy and economical to operate.

Brief description of the drawings

The technical characteristics of the present invention, in accordance with the above-mentioned objectives, are clearly found in the content of the following claims and the advantages thereof will be clearer in the following detailed description, which is given with reference to the figures. attached, which represent several merely exemplary and non-limiting embodiments of the invention, in which:

- figure 1 shows a perspective view of a cantilever sliding door provided with the carriage, according to an embodiment of the present invention;

figure 2 shows an axonometric view of the carriage in a first selected fixing position;

figure 3 shows a front view of the carriage in the first selected fixing position;

figure 4 shows a plan view from above of the carriage in the first selected fixing position;

figure 5 shows a side view of the trolley in its extended configuration, with free wheels inserted inside a longitudinal guide rail of the door;

figure 6 shows a sectional plan view of the trolley according to the line VI-VI of figure 3;

figure 7 shows a sectional side view of the trolley made according to line VII-VII of figure 3, with free wheels inserted inside a longitudinal guide rail of the door;

figure 8 shows an axonometric view of the carriage in a second selected fixing position;

figure 9 shows a front view of the carriage in the second selected fixing position;

figure 10 shows a plan view from above of the carriage in the second selected fixing position; figure 11 shows a sectional plan view of the carriage according to the line XI-XI of figure 9;

figure 12 shows a sectional side view of the trolley according to line XII-XII of figure 9, with free wheels inserted inside a longitudinal guide rail of the door;

figure 13 shows a sectional side view of the trolley according to the line XNI-XNI of figure 9, with free wheels inserted inside a longitudinal guide rail of the door;

- figures 14A-C show the carriage with the coupling elements in different corresponding fixing positions

Detailed description of a preferred embodiment

With reference to the accompanying figures, the reference number 1 refers, in general, to the trolley according to some embodiments of the invention.

The present trolley 1 is intended to be applied to a cantilever sliding type door 100 (also called "self-supporting" in the technical jargon of the field).

The term door should be understood, without departing from the scope of protection of the present invention, any barrier, such as a gate or a gate for outdoor environments, capable of sliding between the two positions, open and closed, intended to carry out the conventional control function of an access passage, accessible to vehicles or accessible to pedestrians, to a property, work, company, building or garden.

According to the example of figure 1, the gate 100 is provided with a barrier structure 101, generally made of steel, movable along a direction of advance X between a closed position, in which the barrier structure 101 occupies the access passage, and an open position in which the barrier structure 101 leaves the access passage free/open.

The barrier structure 101 has a main extension in accordance with the direction of advance X of the door 100, preferably horizontal, and extends on a supporting plane that passes through the direction of advance X and preferably vertical. For example, said barrier structure 101 is made up of a metal structure provided with multiple uprights and crossbars and is normally closed by darkening cover panels or by grilles.

The gate 100 also presents a carriage 1 according to the invention, which slideably supports the barrier structure 101 between the two positions, closed and open, along the direction of advance X. The carriage 1 is intended to be placed below the barrier structure 101 and extends along the direction of advance X.

The trolley 1 is preferably intended to be placed outside the volume of the access passage and is located in such a position as to allow the barrier structure 101 of the cantilever gate 100 to be supported.

Preferably, in order to withstand the tensile and compressive stresses transmitted by the gate 100, the carriage 1 is rigidly constrained to the ground by means of a base thereof, for example, made of concrete or cement.

The support structure 101 of the door 100 carries, fixed to the lower part of the same, by welding or with mechanical couplings and/or fixing screws, a guide rail 102, preferably hollow, which extends along the length of the door. direction of advance X for substantially the entire length of the barrier structure 101 and comprises an elongated hollow section 103 inside which the carriage 1 is coupled, as described in detail below. In more detail, with reference to the examples illustrated in the attached figures, the hollow section 103 of the guide rail 102, preferably formed by extrusion of aluminum or steel, presents an upper wall 104 and a lower wall 105, mutually parallel and substantially horizontals, against which the carriage 1 is going to rest, and two side flanks 106 that are substantially vertical and arranged to connect between the upper wall 104 and the lower wall 105. In particular, on the lower wall 105 of the guide rail 102 there are formed a longitudinal slot 107 substantially parallel to the direction of advance X of the gate 100, through which the carriage 1 passes to allow the movement of the barrier structure 101 between the open position and the closed position.

In addition, the gate 100 comprises, in a manner known per se, a rack 108 fixed to the guide rail 102 and extending along the direction of advance X, preferably over the entire length of the barrier structure 101 along of said direction of advance X.

The rack 108 is positioned fixed externally to the guide rail 102, in particular fixed on a lateral flank 106 of the latter, with its teeth directed downwards, according to the embodiment illustrated in the attached figure 1. The gate 100 also comprises actuating means (not illustrated in the attached figures and per se well known to the person skilled in the art) adapted to actuate, in an automated manner, the movement of the barrier structure 101 between the open position and the closed position. closed position.

As is per se known, the drive means comprise an electric motor arranged outside the barrier structure 101 and a rotating shaft coupled to the electric motor, directly or by means of suitable reducers. Said rotary axis has, fixed to it, a pinion mechanically connected to the rack 108 of the door 100 to transmit to it the movement generated by the electric motor and, consequently, move the barrier structure 101 of the door 100 between the position open and closed position.

The trolley 1 according to the invention comprises a support base 2 intended to be fixed to the ground, for example, by means of bolts on a previously made base, in particular of concrete.

The supporting base 2 extends at least along an extension direction Y intended to be substantially parallel to the direction of advance X of the barrier structure 101 of the gate 100.

Preferably, the support base 2 is made of a metallic material, for example steel.

The trolley 1 according to the invention also comprises at least two coupling elements 4 mounted on the support base 2 and positioned one after the other along the extension direction Y.

In particular, according to the preferred embodiment illustrated in the attached figures, the cart 1 comprises two coupling elements 4 mounted on the support base 2. Otherwise, the cart 1, object of the present invention, can comprise three or more coupling elements 4 mounted on the support base 2, without departing from the scope of protection of the attached claims.

The coupling elements 4 are intended to be constrained by sliding to the guide rail 102 of the door 100, to support and guide the barrier structure 101 of the door 100. The carriage 1 also comprises multiple wheels 5, which are mounted in freely in the coupling element 4 with a first axis of rotation K orthogonal to the direction of extension Y of the support base 2 and preferably horizontal. Said wheels 5 are intended to be inserted in the guide rail 102 to support the barrier structure 101 in a sliding manner.

In particular, by the term "wheel" can be understood any sliding element, whether in the form of a roller or a bearing and whether made of plastic or metal.

According to the preferred embodiment illustrated in the attached figures, the carriage 1 comprises two series of wheels 5, each fixed to a corresponding element of the two coupling elements 4.

In particular, the wheels 5 of the carriage 1 are capable of receiving in contact with the upper wall 104 of the guide rail 102 when the carriage 1 acts resting on the lower wall 105 of the guide rail 102, or receiving it in contact, when the carriage 1 acts under tension.

In this way, the carriage 1 supports the barrier structure 101 at two separate and aligned points along the extension direction Y, in particular on the two sets of wheels 5.

Preferably, the wheels 5 are arranged in pairs, the two wheels 5 of each pair being adjacent to each other and provided with mutually aligned first axes of rotation K (transverse to the extension direction Y and, in particular, substantially horizontal). In particular, according to the preferred embodiment illustrated in the attached figures, the carriage 1 comprises multiple pairs of wheels 5 (for example four) for each coupling element 4. It is evident that the carriage 1 can comprise any number of wheels 5 intended to support the barrier structure 101 of the door 100 in a sliding manner, without departing from the scope of protection of the present patent.

Advantageously, the carriage 1 comprises a first plurality of wheels 5', mounted on one flank of the coupling element 4, and a second plurality of wheels 5", mounted on the opposite flank of the coupling element 4.

In more detail, the wheels 5 of the first plurality of wheels 5' are advantageously equal to the number of wheels 5 of the second plurality of wheels 5" (at least two and in particular four) and are connected to each other in pairs through of corresponding support pins 22 inserted into corresponding through holes formed in the coupling element 4.

With particular reference to the attached figure 13, the wheels 5 of each plurality of wheels 5', 5" are arranged on the corresponding opposite flanks of the coupling element 4 and are preferably mounted on the corresponding support screw 22 by means of corresponding first ball bearings 23, preferably with suitable spacers interposed between each wheel 5 and the corresponding flank of the coupling element 4.

Preferably, the wheels 5 are arranged in series according to the extension direction Y of the support base 2.

In more detail, the multiple wheels 5 of the carriage 1 are intended to be housed within the hollow section 103 of the guide rail 102, with the coupling element 4 positioned to pass through the longitudinal slot 107 of the bottom wall 105.

In operation, to move the barrier structure 101 between its closed position and the open position, the drive means act on the rack 108, driving it according to the extension direction Y. In this situation, the upper and/or lower wall 104, 105 of the hollow profile 103 drive the multiple wheels 5 of the carriage 1 in rotation by friction, allowing easy sliding of the guide rail 102 during the entire movement of the barrier structure 101. According to the present invention, the carriage 1 it comprises adjustment means 6, which define multiple fixing positions along the extension direction Y of the support base 2 and are configured to fix at least one of the coupling elements 4 in a selected fixing position, to be able to place two coupling elements 4 at different distances, depending, for example, on the length and/or the weight of the barrier structure 101 of the door 100.

In this way, the carriage 1 allows to fix at least one of the coupling elements 4 in different fixing positions, so that the desired distance from the other coupling element 4 can be determined along the extension direction Y. In particular, the distance between the two coupling elements 4 is selected as a function of the type of barrier structure 101 of the door 100 and, in particular, as a function of the weight and the length of the barrier structure 101 itself.

In fact, if the carriage 1 is installed on a door 100 provided with a barrier structure 101 of a considerable extension along the direction of advance X and/or of a considerable weight, it is possible to set the fixing position by at least one of the two coupling elements 4 in order to obtain a large distance between the latter, in order to increase the stability of the barrier structure 101.

Otherwise, if the barrier structure 101 presents a small extension with respect to the direction of advance X, it is possible to set the fixing position of at least one of the two coupling elements 4 to obtain a reduced distance between the latter, in order to adapt the carriage 1 to the dimensions of the door and reduce the volume of the carriage 1 itself.

Therefore, the trolley 1 can be used advantageously in a versatile manner in different application situations and, in particular, with doors 100 provided with different models of barrier structure 101, in particular, having different weights and extensions.

In the present description, with the indication that the coupling element 4 is "fixed" through the adjusting means 6, in the selected fixing position, it is intended to indicate that the adjusting means constrain the coupling element 4 to the support base 2, preventing the coupling element 4 from completing, relative to the support base 2, translational movements along the extension direction Y and, in particular, preventing any translational movement. However, it is possible, in particular according to the examples that are described in detail below, that at least a part of the coupling element 4 can oscillate around an axis thereof to adapt to the inclination that the structure adopts. barrier 101 in its different positions along the direction of advance X.

According to the preferred embodiment illustrated in the attached figures, both coupling elements 4 can be fixed in different fixing positions defined by the adjustment means 6 along the extension direction Y of the support base 2.

The adjustment means 6 comprise at least one guide 3 arranged on the support base 2 and extends along the direction of extension Y. Along said guide 3, the coupling element 4 is constrained by sliding to be placed in the fixing positions mentioned.

In addition, the adjustment means 6 comprise at least one fixing element 14 coupled to the coupling element 4 and to the support base 2 to fix the coupling element 4 in the selected fixing position.

As described in detail below, the fixing element 14 comprises, for example, a locking pin 9, such as, in particular, a screw or a rivet.

Otherwise, the fixing element 14 can provide a weld, in order to fix the coupling element 4 to the support base 2 in a detachable manner.

Conveniently, at least two fixing elements 14 are arranged coupled to the elongated arm 8 of the coupling element 4 and separated from each other along the direction of extension Y of the support base 2. Advantageously, the support base 2 comprises a lower part 15 intended to be fixed to the ground. To this end, in the preferred embodiment illustrated in the attached figures, the lower part 15 has slots 18 intended to be crossed by some screws (not illustrated) to fix the support base 2 by screwing, for example, on the concrete base.

The support base 2 advantageously also comprises at least one upper-extending lateral part 7 projecting from the lower part 15 and extending according to the extension direction Y laterally defining the guide 3.

In particular, the lateral part 7 of the support base 2 has a vertical flank that delimits one side of said guide 3 and along which the coupling element 4 is capable of sliding.

Advantageously, the lower part 15 and the lateral part 7 are made of a metallic material, for example steel, and are connected through connection means, such as weld beads 20, according to the preferred embodiment illustrated in the attached figures.

Preferably, the support base 2 comprises two aforementioned side parts 7, arranged parallel and adjacent to each other. The two lateral parts 7 are arranged separated from each other (according to a direction parallel to the first axis of rotation K of the wheels 5) delimiting between them the guide 3 which, in this way, is defined substantially as a seat or a groove in into which the coupling element 4 is inserted in a sliding manner.

Advantageously, each lateral part 7 of the support base 2 extends between a lower end, fixed to the lower part 15, and a free upper end.

According to the preferred embodiment illustrated in the attached figures, the guide 3 of the support base 2 is open at the top (in particular, at the free upper ends of the side parts 7) to allow an easy arrangement of the elements coupling 4 inside.

For the rest, according to another embodiment not illustrated in the attached figures, the seat 3 of the support base 2 is delimited at the top by an upper wall arranged to connect the lateral parts 7, opposite and raised with respect to the upper part. lower 15, in order to improve the mechanical sealing of the at least one coupling element 4 housed in the seat 3.

Advantageously, the guide 3 extends along the extension direction Y between two opposite ends 19 defined, in particular, by corresponding end edges of the side parts 7. Preferably, the guide 3 presents, in at least one of its ends 19 (and, in particular, at both ends), an opening 12 which is traversed by the corresponding coupling element 4 in at least one of the fixing positions, so that the coupling element 4, in said position partly extends out of the guide 3 beyond the end 19. Advantageously, the coupling elements 4 are both slidingly constrained to the guide 3 and are both fixed in corresponding fixing positions by means of corresponding fixing elements 14 .

In this way, it is possible to vary the relative position of both coupling elements 4 along the extension direction Y, increasing the possible configurations of the carriage 1 and, in particular, doubling the possible fixing positions and, therefore, doubling the possible relative distances between the two coupling elements 4 with respect to the extension direction Y itself.

The coupling element 4 comprises an elongated arm 8 which extends mainly along the extension direction Y and is slidingly constrained to the guide 3.

In particular, the elongated arm 8 is placed between the two side parts 7, advantageously leaning against the lower part 15 of the support base 2.

Preferably, the width of the guide 3, defined by the distance between the side parts 7, is substantially the same size as the width of the coupling element 4 and, in particular, of the elongated arm 8 of the latter, leaving a clearance between the sides 7 and the coupling element 4, which allows the sliding of the latter along the guide 3 between the sides 7 to be placed in the desired fixing position.

Suitably, the elongated arm 8 has a substantially plate-like shape (in particular with a vertical plane) and is advantageously made of a metallic material, eg steel.

The elongated arm 8 of the coupling element 4 extends between a first end 16 placed in the guide 3 and an opposite second end 17 which is placed outside the guide 3, beyond the corresponding end 19 of the latter. The corresponding wheels 5 are positioned at the second end 17 of the elongated arm 8, the which are also located, therefore, outside the guide 3 beyond the corresponding end 19 of the latter.

In this way, when the coupling element 4 is in the fixing positions, its elongated arm 8 extends (beyond the corresponding end 19 of the guide 3) substantially as an extension of the support base 2, thus allowing to adjust the distance between the two coupling elements 4, keeping the dimensions of the support base 2 limited. In particular, by using a limited length of the support base 2, it is possible to adjust the distance between the coupling elements 4 for doors of different sizes. sizes, without installation problems linked to the provision of large bases for trolley 1.

According to the preferred embodiment illustrated in the attached figures, the two openings 12 of the guide 3 are each crossed by the elongated arm 8 of the corresponding coupling elements 4 in at least one of the fixing positions. Advantageously, the two elongated arms 8 of the two coupling elements 4 extend mainly according to the direction of extension Y and project from the guide 3, passing through the two opposite openings 12, ending with the corresponding second end 17 outside the guide 3.

The elongated arm 8 extends out of the guide 3 as an extension of the support base 2 according to the direction of extension Y of the same, starting from the corresponding end 19 of the guide 9 itself.

In particular, the elongated arm 8 extends out of the guide 3 (beyond the corresponding end 19 thereof) by a corresponding outer section of the latter which extends, along said elongated arm 8, from the second end 17 from it to the corresponding end 19 of guide 3.

The coupling element 4 comprises an end body 21 rotatably constrained to the elongated arm 8 at the second end 17, in particular by means of a rotation pin 24, and carrying corresponding wheels 5 mounted thereon.

According to the preferred embodiment illustrated in the attached figures, the end body 21 is articulated to the corresponding elongated arm 8 to rotate around a second axis of rotation W substantially orthogonal to the direction of extension Y, preferably parallel to the first axis of rotation K of the at least one wheel 5 and in particular substantially horizontal.

In this way, the end body 21 (which carries the wheels 5 mounted on it) is capable of oscillating around the second axis of rotation W to adapt to the position of the barrier structure 101.

Advantageously, the end body 21 has a substantially flat shape and advantageously has connection holes into which the support bolts 22 of the wheels 5 are inserted and/or an articulation hole into which the rotation bolt 24 is inserted. that constrains the terminal body 21 to the corresponding elongated arm 8.

In particular, the terminal 21 of each coupling element 4 presents a lower part articulated to the second end 17 of the corresponding elongated arm 8 by means of the rotation pin 24 and an upper part, preferably of a length (according to the direction of extension Y) greater than the lower base and carrying, mounted thereon, the first and the second plurality of wheels 5', 5".

Preferably, the end body 21 comprises two side walls 21' separated from each other, between which the second end 17 of the elongated arm 8 is inserted. In particular, the two side walls 21', in the upper part of the end body 21, are connected to each other by means of a connection part 21", and in the lower part of the end body 21 delimit a passage opening through which the elongated arm 8 passes. Preferably, the end body 21 is made of metal, for example, by one or more metal plates, for example with a single metal plate as in the embodiment illustrated in the accompanying figures.

Advantageously, the adjusting means 6 have at least one positioning opening 10 formed in the support base 2 and/or in the coupling element 4, and extends along the extension direction Y. Inside the opening Positioning device 10 defines the fixing positions with which the coupling element 4 can be fixed.

Furthermore, the fixing elements 14 comprise one or more locking pins 9 coupled to the positioning opening 10 in the selected fixing position to fix the coupling element 4 in said fixing position.

According to the embodiment illustrated in the attached figures, the positioning opening 10 is formed by a succession of positioning holes 10' (made in the support base 2 and/or in the coupling element 4) aligned with each other along the along the extension direction Y and defining the corresponding fixing positions.

In particular, the distance between each positioning hole 10' and the next one defines the spacing between each fixing position. The locking pin 9 engages a hole selected from the positioning holes 10' to fix the coupling element 4 in the corresponding fixing position.

According to a different embodiment not illustrated, the locating opening 10 extends continuously between two opposite ends with an elongated shape according to the extension direction Y, so that the locking pin 9 can be inserted along said positioning opening 10 in the desired fixing position.

Said positioning opening 10 (and the corresponding succession of positioning holes 10') can be made only on the support base 2 or only on the coupling element 4, or on both.

Preferably, the positioning opening 10, if it is made on the support base 2, is formed in one or both side parts 7.

Conveniently, the positioning opening 10, if it is made on the coupling element 4, is formed in the elongated arm 8 of the latter.

According to the embodiment illustrated in the attached figures, the positioning opening 10 (and, in particular, the corresponding succession of positioning holes 10') is arranged both in the support base 2 and in the coupling element 8, in such a way that so that the fixing positions can be defined by selecting, both in the support base 2 and in the coupling element 8, the position along the positioning opening 10 (or the positioning hole 10') in which it is inserted the locking pin 9.

According to different embodiments not illustrated, in which the positioning opening 10 is made only in the support base 2 or only in the coupling element 4, the other component of these two advantageously presents a coupling hole aligned with the opening positioning pin 10 and crossed by the locking pin 9 so that the latter engages both the support base 2 and the coupling element 4.

Referring to the example illustrated in the attached figures, the positioning holes 10' are closed around the perimeter (for example, with a circular shape), although it is evident that they can also have an open edge, for example, at the upper end free of the lateral part or at a longitudinal edge of the elongated arm 8. Preferably, the locking pin 9 comprises a bolt, in particular a screw having the shank inserted in the selected positioning hole 10'. In particular, the head of the screw rests against one of the lateral parts 7 of the support base and the stem exits through the other lateral part 7 and is screwed to a bolt that rests against this last lateral part 7.

Another object of the present invention is a procedure for installing a cantilever sliding carriage of the type described above, with respect to which the same references will be maintained for reasons of simplicity of the description.

The procedure comprises at least the operational steps described below.

The procedure foresees, firstly, a step to anchor the support base 2 to the ground.

Said step for anchoring the support base 2 preferably provides for fixing the support base 2 itself so that the extension direction Y of the seat 3 is substantially horizontal, to allow optimal movement of the barrier structure 101 of the door 100.

The method also foresees a stage of arranging the coupling elements 4 on the support base 2. It is evident that said arranging stage can be carried out before or after the aforementioned stage to anchor the support base 2.

In more detail, the arrangement step allows the elongated arm 8 of the coupling elements 4 to be inserted inside the seat 3 of the support base 2.

The method also comprises a step for regulating the distance between the coupling elements 4 along the extension direction Y.

Said adjustment stage provides for placing at least one of the coupling elements 4 in a fixing position selected from the fixing positions of the adjustment means 6, with the second end 17 of the elongated arm 8 located outside the guide 3 plus beyond the corresponding end 19 of the latter.

Subsequently, the adjustment step provides for fixing the other of the at least two coupling elements 4 to the support base 2 in the selected fixing position along the extension direction Y.

In particular, the adjustment step makes it possible to align the selected positioning hole 10' of the side part 7 of the support base 2 with the selected positioning hole 10' of the elongated arm 8 of the coupling elements 4.

Subsequently, the adjustment stage provides for inserting, in the selected positioning hole 10', the locking pin 9 of the adjustment means 6, which is adapted to constrain the elongated arm 8 of the coupling element 4 to the support base 2.

In this way, the method makes it possible to fix the coupling elements 4 at the desired relative distance, based on the model of the barrier structure 101 of the door 100. The invention thus conceived thus achieves the pre-established objectives.

Claims (11)

Trolley (1) for a cantilever sliding door, said door (100) being of the type that presents a guide rail (102) fixed to a barrier structure (101) and extending longitudinally according to a direction of movement. advance (X), comprising said car (1): - at least one support base (2) intended to be fixed to the ground, which extends at least along a direction of extension (Y) intended to be substantially parallel to said direction of advance (X); - at least two coupling elements (4) mounted on said support base (2) and positioned one behind the other along said direction of extension (Y); - multiple wheels (5), which are freely mounted on said coupling elements (4) and which are intended to be inserted in said guide rail (102) to slidely support said barrier structure (101); - adjustment means (6), which define multiple fixing positions along said direction of extension (Y) and which are configured to fix at least one coupling element (4) of said coupling elements (4) in a fixing position selected from said fixing positions; wherein said regulating means (6) comprise: - at least one guide (3) arranged on said support base (2) and extending along said direction of extension (Y) between two opposite ends (19) of said guide (3), being constrained said at least one coupling element (4) by sliding along the guide (3) to be placed in said fixing positions; - at least one fixing element (14) coupled to said at least one coupling element (4) and to said support base (2) to fix said coupling element (4) in said selected fixing position; wherein at least one of said at least two coupling elements (4) comprises an elongated arm (8) that extends mainly along said direction of extension (Y) and is constrained by sliding to said guide (3); said carriage (1) being characterized by the fact that said elongated arm (8) extends between a first end (16) placed in said guide (3) and a second opposite end (17) that is placed outside said guide (3) beyond the corresponding end (19) of said guide (3), and at said second end (17) there is at least one corresponding wheel (5) located beyond said corresponding end (19) of the aforementioned guide (3); wherein said elongated arm (8) extends beyond the corresponding end (19) of said guide (3) as an extension of said support base (2) according to said extension direction (Y); wherein said at least one coupling element (4) comprises an end body (21) that is rotatably constrained to said elongated arm (8) at said second end (17) and carries said at least one wheel corresponding (5) mounted on it. Trolley (1) according to claim 1, characterized in that said guide (3) is provided, at least at one of said ends (19), with an opening (12) that is traversed by the elongated arm (8) of said at least one coupling element (4). Trolley (1) according to any of the preceding claims, characterized in that said support base (2) comprises: - a lower part (15) intended to be fixed to the ground; - at least one lateral part (7) that extends in the upper part projecting from said lower part (15) and that extends along said direction of extension (Y) laterally defining said guide (3). Trolley (1) according to claim 3, characterized in that said support base (2) comprises two side parts (7) located adjacent and separated from each other, delimiting said guide (3) between them. in which said at least one coupling element (4) is inserted. Trolley (1) according to claim 4, characterized in that the distance between said lateral parts (7) is substantially the same size as the width of the elongated arm (8) of said at least one support element. coupling (4), leaving a clearance between said lateral parts (7) and said elongated arm (8) that allows said elongated arm (8) to slide along said guide (3) between said lateral parts (7) to placing said elongated arm (8) in said fixing positions. Trolley (1) according to claim 5, characterized in that said elongated arm (8) is located between said two lateral parts (7), leaning against the lower part (15) of said support base ( 2). Trolley (1) according to any of the preceding claims 4 to 6, characterized in that each lateral part (7) of said support base (2) extends between a lower end, fixed to said lower part (15), and a free upper end; wherein said guide (3) is at the top open at the free upper ends of said side parts (7). Trolley (1) according to any of the preceding claims, characterized in that said at least two coupling elements (4) comprise corresponding elongated arms (8) that are both constrained by sliding to said guide ( 3) and are fixed in said corresponding fixing positions by means of said corresponding fixing elements (14). 9. Trolley (1) according to any of the preceding claims, characterized by the fact that: - said adjustment means (6) present at least one positioning opening (10) formed in said support base (2) and/or in said coupling element (4), and extends along said direction of extension (Y), said fixing positions being defined in said positioning opening (10); - said fixing elements (14) comprise at least one locking pin (9) coupled to said positioning opening (10) in one of said fixing positions to fix said coupling element (4) in said fixing position . Trolley (1) according to claim 9, characterized in that said positioning opening (10) has a succession of positioning holes (10') located aligned with each other along said direction of extension (Y) and defining said corresponding fixing positions; wherein said locking pin (9) engages a selected hole among said positioning holes (10') to fix said coupling element (4) in said corresponding fixing position. Trolley (1) according to any of the preceding claims, characterized in that said end body (21) comprises two side walls (21') separated from each other, between which the second end (17) is inserted. of said elongated arm (8); wherein said two side walls (21'), at an upper part of said end body (21), are connected to each other by means of a connecting part (21") and, at a lower part of said end body ( 21), delimit a passage opening traversed by said elongated arm (8).