ES2299306B2 - PROTECTION FENCE FOR WORKS. - Google Patents

Abstract

Protection fence for works. It includes some vertical assemblies (1), means for fixing the uprights and telescopic stringers (3) intended for set on vertical uprights (1) consecutive and composed of at least one outer profile (18) and one inner profile (19), which they present in their middle longitudinal zone two folds (20, 20 ') similar in the form of omega or dovetail, and carriers of some stop means (25, 24, 28) that delimit the displacement Longitudinal profiles. It comprises a system of tighten, formed by threaded "T" stems (14) or smooth eyebolts (50) that cross horizontally vertical uprights at different height. On one end a lock nut (17) of tightening e is mounted on the rod immobilization of the crossbar with respect to the vertical upright, finishing off said stems by the opposite end on a head (15) stringer retainer.

Description

Protection fence for works.

Object of the invention

The present invention relates to a fence of protection for works of the type intended to be fixed on the edges of the floor in order to delimit the work area during the construction phase and which include assemblies vertical, means for fixing the uprights vertical to the floor and telescopic stringers intended for set on consecutive vertical uprights.

Background of the invention

Currently during the execution of works by construction is done in a first phase the conformal floor of the structure and in a second phase the forming walls of the enclosure walls and interior separations.

As the floor is constructed, it is usual the placement on its perimeter of some elements of construction that, in some cases are composed of fences of protection and in other cases by metal bars, of general configuration in "L" that support networks of protection, being the mission of these elements to avoid the fall of the operators under vacuum.

Currently there are different in the market types of protection fences for works, presenting generalized vertical uprights that are fixed to the formwork by any means and they have some means to support or lift of stringers that form a closure between the consecutive vertical uprights.

In some of these fences the defined means in the vertical uprights for the support of the stringers are composed of "L" rods fixed by welding to the vertical uprights and that jointly define the zones support of the stringers, which may be composed simply by planks or by metal bars.

The support of the stringers on the supports mentioned lacks stability because said stringers are found simply supported on the supports, with the risk of that the stringers are accidentally released from the supports leaving of fulfilling the intended protective function.

On the security fence for works by building described in the Spanish utility model U200201549 se contemplates the use of telescopic stringers that soldiers have vertical stems at their ends intended to be inserted in fixed tubular lugs, also by welding, to the vertical uprights.

This fence presents different problems of use and manufacturing, it is noteworthy that the coupling of telescopic stringers with respect to vertical uprights are performed only by gravity, with a clear risk of involuntary release of telescopic stringers before possible impacts and that the coupling means are fixed to the beams and uprights by welding, which slows down your manufacturing.

On the fence of the model request for utility mentioned is also provided that the stringers can mount in an inclined position, leaning between two uprights vertical arranged at different height, to protect areas sloping floors, such as stairs; however for it it is necessary to resort to the use of specific stringers in which the stems have the necessary inclination to compensate for the pending protection, which is a problem, since  that these sections cannot be protected with stringers conventional, ie intended for placement horizontal.

Another problem presented by these fences of protection is that generally the vertical uprights are conformed by tubular profiles with a low resistance to flexion which determines that they can bend towards the outside of the forged with some ease decreasing the effectiveness of the fence.

In addition, the fence object of the request U200201549 is easily removable, so it is not exempt by full of the risk of being subtracted from its location in work.

In the Spanish utility model U200102185, describes a protection fence, which has a plastic material to close the space existing between consecutive vertical uprights. The use of these plates does not allow closing or protection of sloping areas of the floor by preventing the connection of said plates, in an inclined position, with respect to the uprights vertical

The technical problem that arises is the development of a fence that can be stably fixed to the forged, or to a similar horizontal surface, and allowing perform the "edge protection" of the contour of the floor or the height construction that is to be protected, with independence of its geometry, using a single type of vertical uprights and horizontal stringers telescopic and fixing elements of the stringers with the uprights and from the fence to the surface.

Description of the invention

The protection fence for works, object of the invention comprises vertical uprights for securing telescopic stringers and sergeants for fixing the vertical uprights to the floor, presenting a configuration modular.

According to the invention the vertical uprights they comprise a base plate, intended to be fixed on the slab by means of a clamping sergeant, said base plate being integral to a vertical profile that is longitudinally housed at the end bottom of a tubular profile forming the vertical upright proper and acting as a reinforcing element of said amount, significantly increased its resistance to bending, and the fence comprising a tightening system of the inner profile against the outer profile and the vertical upright.

In a first variant of the clamping system, the vertical uprights comprise threaded stems that horizontally cross the vertical uprights to different heights; being mounted on one end of the stem  a lock nut, operable only by means of a complementary safety tool, to set the tightening and immobilization of the telescopic beam with respect to the amount vertical and finishing off said stems by the opposite end in a retaining head of the corresponding telescopic beam.

Each of the telescopic stringers is composed of an outer profile and an inner profile, preferably factory preassembled, which can be moved relatively in the longitudinal direction between positions extremes in which they define the maximum and minimum extent of the telescopic beam.

The interior and exterior profiles present in their longitudinal middle zone two similar folds, like omega or dovetail, said folds carrying means butts responsible for delimiting longitudinal displacement relative of the interior and exterior profiles and of windows for the retention of the heads of the stems in the position of mounting.

The threaded rod defines in conjunction with the retaining head a "T" mode setting, presenting said head an initial section of smaller section and an extreme section, similar to the previous one and of greater section than that one; being told head in charge of retaining the telescopic stringers with respect to the vertical uprights in the fence mounting position.

According to the invention the outer profile of the telescopic stringers presents in the soul of the middle fold longitudinal and close to the ends of said outer profile prominences that protrude towards the back or contact of the inner profile, conforming these prominences the stop means delimiting the longitudinal displacement of the internal profile with respect to the external profile and the positions of Maximum and minimum extension of the telescopic beam.

These prominences of the external profile are formed by a deformation of the material of said profile exterior acting as a top of the internal profile in the position of minimum extension of the telescopic crossbar and by a rivet fixed to said outer profile and acting as a stop of the inner profile in the position of maximum extension of the crossbar.

This outer profile is provided with clips for hooking and holding protective nets, allowing the simultaneous use of the fence and a network of protection intended to prevent the fall of operators to empty.

The inner profile, presents in the soul of omega fold, a central configuration channel in "U" and of sufficient amplitude to allow displacement longitudinal on the inside of the rivet integral to the profile outside during its relative longitudinal displacement relative to to the outer profile.

Said central channel of the inner profile has at one of its ends a deformation, coplanar with the soul of fold as an omega or dovetail; this deformation in the responsible for contacting the rivet or profile prominence outside in the position of maximum extension of the crossbar.

The interior and exterior profiles present in the shaping areas of the opposite ends of the crossbar telescopic cross-shaped windows for assembly and fixing the telescopic beam to the vertical uprights Consecutive, by the stem retaining heads threads associated with said vertical uprights.

Each of the mentioned windows presents two concentric openings, angularly offset, presenting one of said openings wide enough to allow the I pass inside the entire retaining head and the another opening a smaller amplitude, enough to receive in its inside the initial section of the retaining head in the position of Telescopic beam assembly with respect to the uprights vertical Thus, the assembly of the telescopic stringers on vertical uprights can be done in a way Quick and easy, by shaping the windows and the heads of the threaded stems a quick closing. To perform said assembly just pass the threaded rod head through the larger opening of the corresponding window and turn said head until the initial section, of smaller section, is housed in the other opening of the window.

According to the invention, the stems threaded are mounted with the possibility of rotation with respect to vertical uprights allowing head orientation retainer in the direction necessary to perform the fixing of the telescopic stringers both horizontally and in inclined position. This allows the same stringers telescopic can be mounted between two vertical uprights arranged at the same height or at a different height, which provides great versatility to the fence.

Sergeants for fixing the uprights vertical to the floor comprises a serrated lower jaw, intended to act on the underside of the floor without possibility of slipping. Said lower jaw is located fixed to a vertical bar provided with interdistanced holes for mounting a retaining pin of an adjustable bracket in height This pin allows, in combination with the holes of the vertical bar, fix the square in a position close to the upper surface of the floor.

The squad has a horizontal wing provided of a threaded vertical hole for mounting the means of tighten a top plate, which is responsible for pressing the motherboard of the corresponding vertical upright against the upper surface of the formwork. Said means of tightening the top plate are composed of a screw that presents superiorly a drive head and whose lower end It is fixed with the possibility of turning the upper plate of the sergeant.

This sergeant's top plate features a surface substantially equal to that of the base plate of the uprights vertical, said top plate having an opening front to the upper area of the tubular profile of the vertical amount to be fixed; with what is achieved, on the one hand, ensure full performance of sergeant's top plate against the motherboard and, on the other hand, keep the top plate centered with respect to the base plate of the vertical upright.

The top plate of the sergeant present superiorly a configuration reinforcement in "U" arranged around the front recess of said plate higher; the straight distance between the straight sections of said "U" configuration reinforcement, approximately equal to the side length of the inside profile of the uprights vertical

The vertical uprights are constituted by two hollow oblong profiles of essentially square straight section, of which the first profile is an outer profile that shows on its four sides two staggered or rectangular grooves, and their edges are appreciably rounded, the second being profile an inner profile whose four sides are slightly shorter than the straight distance between the inner edges of the grooves of the first profile, and which fits into a square hole of which said plate is provided
base.

First grooves of the outer profile of the vertical uprights have superiorly a plurality of first holes, consecutive and longitudinally distributed, and inferiorly a few holes of a diameter smaller than that of the first holes for mounting fixing means of the interior and interior profiles, and second grooves, which they are at 90 ° from the first, they have two lower holes, closely arranged with each other and an upper hole for the mounting of threaded stems.

The second profile of the vertical upright presents on their faces, in correspondence with the first grooves, a upper hole of larger diameter and two lower holes of smaller diameter, located at the same distance as the two holes lower of the corresponding groove of the first profile for the mounting of the fixing means of the outer profiles and interior, comprising in their perpendicular faces, in correspondence with the second grooves, two holes located at the same distance as the two bottom holes of the second grooves for the passage of threaded stems.

Preferably, the threaded stems of this first variant of the clamping system are adapted to collaborate by tightening with safety nuts, provided with holes, which can only be tightened and loosened by a complementary special handling tool or wrench, designed exclusively for this purpose. In this way, the fence of the invention has inviolability properties, since it cannot be disassemble if not with the same special handling keys, Used for assembly.

According to a second system variant tightening, the latter comprises eyebolts whose spike is adapted to traverse both profiles simultaneously, through windows that are equipped with profiles, and whose ring is adapted to produce the tightening of one against another profile.

In this case, vertical uprights can comprise through holes for the pin of the eyebolt, of so that, in operative position, it crosses both the profiles and A vertical upright.

The eye of the eyebolt is preferably equipped with holes that collaborate with a fixing pin of the eyebolt in its operative tightening position.

Preferably. the pin of the eyebolt is a smooth spike, smaller in diameter than the inside diameter of the through hole, and is equipped with wings adapted to be able to cross the profile windows and to exercise against the vertical upright, so that, in the operational position of assembly and tightening, the wings are arranged between the upright and the profiles and these are tightened by the ring of the eyebolt.

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Those skilled in the art will understand that fence of the present invention allows triple functionality, with in order to adapt to all types of safety requirements in the building:

one.

allows to constitute consecutive fences horizontally and extensible in length, with the possibility of saving vertical slopes and obstacles;

2.

allows conformed fences by horizontal slats with very little vertical separation between the themselves; Y

3.

allows to replace, in a very simple, 3 stringers by mesh size protection nets very small.

Description of the figures

To complement the description that is being performing and in order to facilitate the understanding of characteristics of the invention, is attached herein descriptive a set of drawings in which, for illustrative purposes and not limiting, the following has been represented:

Fig. 1 shows a schematic view in rear elevation a section of the fence object of the invention with the telescopic stringers arranged horizontally between vertical uprights

Fig. 2 shows a front elevation view of a section of fence with the telescopic stringers fixed to two vertical uprights arranged at different heights.

Figs. 3 and 4 show paths seen in exploded and profile perspective of one of the uprights vertical

Fig. 5 shows a top plan view of one of the vertical uprights sectioned by a plane horizontal.

Fig. 6 shows a perspective view of one of the threaded stems provided with a retaining head, constituting the first variant of the tightening system.

Figs. 7 and 8 show profile views and in elevation of the outer profile of the telescopic crossbar.

Figs. 9 and 10 show different views of profile and elevation of the outer profile of the crossbar telescopic.

Fig. 11 shows a perspective view rear of a telescopic beam in the minimum position extension, with an expanded detail of the stop means.

Fig. 12 shows a profile view of a telescopic beam.

Fig. 13 shows a detail of the fixation of one of the ends of a telescopic beam to an upright vertical.

Figs. 14 and 15 show paths seen in Sergeant's perspective with top plate in position disassembled and in mounted position.

Fig. 16 shows a perspective view of a sergeant in the acting position on the motherboard of a vertical amount

Fig. 17 is a perspective view, from a front side of a fence that incorporates a clamping system alternative.

Fig. 18 is an analogous view of Fig. 17, but with the fence seen from the opposite side.

Fig. 19 is a detail view of a system tightening according to Fig. 17, according to a similar perspective and in explosion of the constituent elements of the system squeeze in.

Fig. 20 is a schematic sectional view, from above, the vertical upright and the profiles, subject by the second variant of the tightening system.

Preferred Embodiment of the Invention

As you can see in the drawings, the fence of the invention is formed by vertical uprights 1 intended to be fixed on the slab by sergeants 2, and by 3 telescopic stringers that are fixed to the uprights vertical 1.

\hbox{exterior 4.}

As seen in Figs. 3, 4 and 5, the vertical uprights 1 are composed of an outer profile 4 and an inner profile 5 that is integral with a base plate 6, said profile 5 being housed at the lower end of the profile

 \ hbox {exterior 4.} 

The outer profile 4 shows on its four sides 7, 8 rectangular grooves with which they contact internally the sides of the inner profile 5.

The grooves 7 have superiorly one plurality of holes 9, consecutive and distributed longitudinally, and inferiorly holes 10 for mounting of rivets 11 responsible for fixing profiles 4 and 5, by a part, and for placement between vertical uprights 1 of a network of protection, not shown in the drawings, which may be of the type of metal mesh or similar.

The grooves 8 have two holes bottom 12 and a top hole 13 for the through mounting of threaded rods 14 provided with a retaining head 15 for fixing telescopic uprights to vertical uprights one.

The inner profile has holes 12 ' for the passage of the respective threaded rods 14 and about 10 'holes for mounting rivets 11.

The outer profile 4 has superiorly a closure cap 16.

On the rear end of the stems threaded 14 safety nuts 17 are mounted. These locknuts 17 are provided with holes, visible in Fig. 3, so that they can only be tightened and loosened by a special manipulation tool or wrench Complementary, designed exclusively for this purpose.

In this way, once the nuts are tightened security 17 by operators provided with the appropriate keys, for the assembly of the telescopic stringers 3 and the uprights vertical 1, the inviolability of the fence is guaranteed, the which can not be disassembled anymore but with the same keys handling specials

As seen in Fig. 6, head 15 of the stem has an initial section 15a of smaller section and a section end 15b of larger section defining rod 14 together with the head a configuration in "T".

Telescopic stringers 3, as you can observe in Figs. 1 and 2, are composed of a profile exterior 18 and an internal profile 19 factory preassembled and enabled relative longitudinal displacement.

The outer 18 and inner 19 profiles present similar sections, hugging the outer profile 18 to the profile interior 19 as seen in Fig. 11 and 12.

The outer profile 18, shown in Figs. 7 and 8, it has a fold 20 in its middle longitudinal area, as a of omega, which extends along opposite ends on paths flat surfaces 21 that end in two configurations opposite 22 as a "U".

In the fold 20 it presents windows 23 for the performance of the retaining heads 15 and stop means, formed by a deformation 24 and a rivet 25, to delimit the longitudinal displacement of the inner profile 19 with respect to the outer profile 18.

As seen in Figs. 2 and 13, this profile exterior 18 is provided with clips 26 for engagement and securing protection nets.

The inner profile 19, shown in Figs. 9 and 10, it has a 20 'fold in its longitudinal middle zone omega mode, similar to that of the outer profile 18 and that prolongs opposite ends on flat surfaces 21 ' which end in two opposing configurations 22 'by way of "OR".

The inner profile 19 presents in the soul of the fold 20 'a central channel 27 to allow displacement longitudinally inside the rivet 25 of the outer profile 18 during the relative longitudinal displacement of the profiles 18, 19 of the telescopic beam 3.

The central channel 27 of the inner profile 19 it presents at one of its ends a deformation 28, coplanar with the soul of the fold 20 ', and that determines the position of maximum extension of telescopic beam 3 when contacting against the rivet 25 of the outer profile.

As seen in Fig. 11, the position of minimum extension of the telescopic beam 3 is determined by the contact of one of the ends of the profile inner 19 against deformation 24 of the outer profile 18.

The internal profile 19 presents in the area forming one of the ends of the telescopic beam 3 of a window 23 ', as a cross, analogous to window 23 of the profile exterior 18.

Each of the windows 23, 23 'has two concentric openings 29, 30, angularly offset, presenting one of said openings 29 wide enough to allow the pass through the entire retaining head 15 and the  another opening 30 a smaller amplitude, sufficient to receive in its inside the initial section 15 of the retaining head in position for mounting the telescopic beam 3 with respect to the uprights vertical 1, as seen in the detail of Fig. 13.

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Threaded stems 14 are mounted with possibility of rotation with respect to vertical uprights 1 allowing the orientation of the retaining head 15 in the direction necessary for fixing the stringers telescopic 3 in horizontal position, as shown in Fig. 1, and in an inclined position, as shown in Fig. 2.

A first possibility for fixing the vertical upright 1 to the floor is a sergeant 2 represented in Figs. 14, 15 and 16.

This sergeant 2 comprises a lower jaw 31 toothed integral to a vertical bar 32 on which it finds mounted with the possibility of vertical displacement a square 33 height adjustable.

The vertical bar 32 is provided with interdistanced holes 34 for mounting a pin 35 which retains the square 33 at the desired height depending on the thickness of the floor.

Square 33 presents in its horizontal wing threaded vertical hole 36 for mounting a screw 37 that superiorly it has a drive head 38 and whose lower end is fixed with the possibility of turning to the upper plate 39 of sergeant 2.

The upper plate 39 is responsible for press the base plate 6 of the corresponding vertical upright 1 against the upper surface of the formwork.

In the drawings it can be seen that plate 6 is equipped with through holes, intended for anchoring the fence to a horizontal surface by collaboration with means of nut or screw In this way, it is possible to make the anchoring of the fence of the invention in two different ways: by means of sergeants 2, either by direct anchoring of the plates 6, or for a combination of the two possibilities.

Said upper plate 39 has a surface substantially equal to that of the motherboard 6 and is provided with a front opening 40 for passage to the upper area of the profiles 4 and 5 forming the vertical upright itself saying.

The upper plate 39 presents superiorly a "U" configuration reinforcement 41 arranged around the front opening 40.

It will be appreciated that, thanks to the particular constitution of vertical uprights 1 and stringers telescopic 3, it is possible to arrange a series of two, three  or more 3 consecutive stringers in height, leaving between two adjacent stringers 3 a vertical distance that is how small desired, in order to comply with the safety standards in works to that edge protection devices will be forced. In In any case, the lower beam 3 acts as a skirting board.

In Figs. 1 to 13 a first form is illustrated of realization of the tightening system, constituted by a rod threaded with a head that allows to obtain the attribute of inviolability of the fence, since it requires using specific tools for both tightening and for perform disassembly

In Figs. 17 to 20 a second one is illustrated embodiment of the tightening system, with other attributes and of greater simplicity with respect to the first embodiment, which based on eyebolts 50 whose spike 51 is adapted to pass through simultaneously both profiles 18 and 19 and the amount 1, linking the Conforming structure of the fence 100, with the possibility of adjusting the angle of the stringers 3 with respect to the uprights 1.

For this, profiles 18 and 19 are equipped with windows 23 and the pillar 1 of said holes 9, and the ring 52 of eyebolt 50 is adapted to produce the tightening of against each other profile, by action of a tool that does turn. The latter is very simple, and it is possible with such tools Simple as for example a screwdriver.

To facilitate the attachment of the joint, the pin 51 of eyebolt 50 is provided with holes, 53 that collaborate with a pin 54, which is introduced on the opposite side of the fence.

The fence 100 of the invention, thanks to the particular constitution of the vertical uprights 1, of the telescopic stringers 3 and the clamping system, you can have  a series of two, three or more stringers 3 consecutive in height, leaving between two adjacent stringers 3 a vertical distance that as small as desired, in order to comply with the rules of security in works to which the devices of will be forced edge protection. A lower beam 3 can exert baseboards.

In Fig. 20 it can be seen that pin 51 of the eyebolt 50 is a smooth spike, smaller in diameter than the diameter inside the holes through hole 9, and is provided with a pair of wings 55, arranged at diametrically opposite sides of the spike 51. The wings 55 are preferably machined by means of two "pinches" practiced on spike 51, in a way conventional, determining in this a maximum total width of smaller than 23 windows, but larger than the diameter of through holes 9.

In this way, the wings 55 can pass through the windows 23 of profiles 18, 19 and have the mission of exercising stop against the vertical upright 1. Thus, in the operating position for mounting and tightening of Fig. 20, the wings 55 are arranged between the post 1 and the profiles 18, 19 and these are tightened by ring 52 of eye bolt 50.

In the drawing of Fig. 20, the tightening action and clamping would be completed by passing pin 54 through the hole 53.

Those skilled in the art will understand that fence of the present invention has a triple functionality, with in order to adapt to all types of safety requirements in the building:

-

allows to constitute consecutive fences horizontally and extensible in length, with the possibility of saving vertical slopes and obstacles;

-

allows conformed fences by horizontal slats with very little vertical separation between the themselves; Y

-

allows to replace, in a very simple, 3 stringers by mesh size protection nets very small.

Once nature is sufficiently described of the invention, as well as a preferred embodiment, for the appropriate purposes that the materials, form, size and arrangement of the elements described may be modified, as long as this does not imply an alteration of the essential features of the invention claimed in continuation.

Claims (26)

1. Fence of protection for works, of the type of those destined to be fixed on the edges of a slab or horizontal surface in order to delimit the work area during the construction phase and comprising vertical assemblies (1), means for fixing the vertical uprights (1) to the floor and telescopic stringers (3) intended to be fixed on consecutive vertical uprights (1), characterized in that each of the telescopic stringers (3) is composed of at least one outer profile ( 18) and an inner profile (19), which have similar folds (20, 20 ') in their longitudinal middle zone, similar, as an omega or dovetail, said folds (20, 20') carrying means of stop (25, 24, 28) delimiting the relative longitudinal displacement of the inner and outer profiles 19, and the fence comprising a clamping system of the inner profile against the outer profile and the vertical upright; where said tightening system comprises some threaded stems (14) and because said folds (20, 20 ') they comprise windows (23, 23 ') for the retention of the heads (15) of said threaded rods (14) in the mounting position, the  which horizontally cross the vertical uprights (1) to different heights, being mounted on one end from the stem (14) a lock nut (17) to set the tightening and immobilization of the telescopic beam (3) with respect to the vertical upright (1) and topping said stems (14) by the opposite end on a head (15) retainer of the corresponding telescopic beam (3). 2. Fence, according to claim 1, characterized in that the threaded rod (14) together with the head (15) defines a "T" configuration, said head (15) having an initial section (15a) of smaller section and an end section (15b), similar to the previous one and of greater section than that, said safety nuts (17), provided with holes, which can only be tightened and loosened by means of a tool or special complementary manipulation wrench, designed exclusively For this end. 3. Fence, according to claim 1, characterized in that the outer profile (18) has in the core of the longitudinal longitudinal fold (20) and close to the ends of said outer profile (18) prominences that protrude towards the rear face or contact of the inner profile (19), said prominences forming the stop means that delimit the longitudinal displacement of the inner profile (19) with respect to the outer profile (18) and the positions of maximum and minimum extension of the telescopic beam (3). 4. Fence according to claim 3, characterized in that the prominences of the outer profile (18) are formed by a deformation (24) of the material of said outer profile and by a rivet (25) fixed to said outer profile. 5. Fence, according to claim 3, characterized in that the outer profile (18) has staples (26) for engaging and securing protective nets. 6. Fence, according to claim 1, characterized in that the inner profile (19) has a central channel (27) of "U" configuration and of sufficient amplitude to allow longitudinal displacement through the core of the fold (20 '). its interior of the rivet (25) integral to the outer profile (18) during the relative longitudinal displacement of the inner (19) and outer (18) profiles. 7. Fence, according to claim 6, characterized in that the central channel (27) has at one of its ends a deformation (28), coplanar with the core of the fold (20 ') and intended to contact the rivet (25) of the outer profile (18) in the position of maximum extension of the telescopic beam (3). 8. Fence, according to claim 1, characterized in that the inner (19) and outer (18) profiles present in the forming areas of the opposite ends of the telescopic beam (3) two windows (23 ', 23), as a cross , for mounting and fixing the telescopic beam (3) to consecutive vertical uprights (1), by the heads (15) retaining the threaded rods (14) associated with said vertical uprights (1). 9. Fence, according to claim 8, characterized in that each of the windows (23, 23 ') has two concentric openings (29, 30) angularly offset, one of said openings (29) having a sufficient amplitude to allow a total amplitude passes through the interior of the entire head (15) and the other opening (30), sufficient to receive inside the initial section (15a) of the head (15) in the mounting position of the telescopic beam (3) with respect to vertical uprights (1). 10. Fence, according to any one of claims 1 to 2, characterized in that the threaded rods (14) are mounted with the possibility of rotation with respect to the vertical uprights (1), allowing the orientation of the retaining head (15) in the direction necessary for fixing the telescopic stringers (3) both horizontally and in an inclined position. 11. Fence, according to claim 1, characterized in that the vertical uprights (1) comprise a base plate (6), intended to be fixed on a slab or horizontal surface by means of a clamping sergeant (2), said base plate being ( 6) integral with a profile 5 that is longitudinally housed at the lower end of an outer profile (4) that forms the vertical upright itself. 12. Fence, according to claim 11, characterized in that it comprises sergeants (2), provided with a serrated lower jaw (31), fixed to a vertical bar (32) provided with interlocking holes (34) for mounting a pin ( 35) of retention of a square (33) adjustable in height; said square (33) having a horizontal wing with a threaded vertical hole (36) for mounting the clamping means of an upper plate (39) intended to press the base plate (6) of the corresponding vertical upright (1) against the upper surface of the formwork. 13. Fence, according to claim 12, characterized in that the upper plate (39) has a surface substantially equal to that of the base plate (6) of the vertical uprights (1), said upper plate (39) having a front opening (39) 40) for the passage to the upper area of the profiles (4) and (5) of the vertical upright (1). 14. Fence, according to claim 13, characterized in that the upper plate (39) has a reinforcement (41) with a "U" configuration arranged around the front opening (40) of said upper plate (39). 15. fence according to claim 1, wherein the stiles are formed by two profiles (4, 5) elongated, hollow, cross section substantially square, of which the first profile is an external profile (4) showing in its four sides staggered or grooves (7, 8) of rectangular shape, and their edges are appreciably rounded, the second profile being an inner profile (5) whose four sides are slightly shorter than the straight distance between the inner edges of the grooves of the outer profile, and which fits into a square hole of which said base plate (6) is provided, the plate (6) also being provided with through holes, provided for anchoring the fence to a floor or surface horizontal by collaboration with nut or screw means. 16. Fence according to claim 15, characterized in that the outer profile (4) has first grooves (7) that have a plurality of first holes (9), consecutive and longitudinally distributed, and lower second holes (10), of smaller diameter than that of the first holes, for mounting the means (11) for fixing the inner (5) and outer (4) profiles, and second grooves (8), which remain at 90. of the first, they have at least two lower holes (12), closely arranged with each other and at least one upper hole (13) for mounting respective fingers threaded rods (14). 17. Fence according to claims 15 and 16, characterized in that the second profile (5) of the vertical upright (1) has on its faces, in correspondence with the first grooves (7), at least two lower holes (10 '), located at the same distance as the two lower holes (10) of the corresponding groove (7) of the outer profile (4) for mounting the fixing means (11) of the outer (4) and inner (5) profiles, comprising at their perpendicular faces, in correspondence with the second grooves (8), at least two holes (12 ') located at the same distance as the two holes (12) of the second grooves (8) for the passage of the threaded stems ( 14). 18. Fence according to claim 14, characterized in that the straight distance between the straight sections of said reinforcement (41) of "U" configuration is approximately equal to the length of the side of the outer profile (4) of the vertical upright (1) . 19. Fence, according to claim 13, characterized in that the clamping means of the upper plate (39) are composed of a screw (37) which has a driving head (38) and whose lower end is fixed with the possibility of turn to the upper plate (39) of the sergeant (2). 20. Fence, according to any one of the preceding claims, characterized in that it comprises at least two telescopic stringers (3), one lower, in baseboard functions, and another upper. 21. Fence, according to claim 20, characterized in that it comprises at least a third telescopic beam (3) disposed between the upper and lower stringers. 22. Fence according to claim 1, characterized in that said clamping system comprises eyebolts (50) whose spike (51) is adapted to pass both profiles simultaneously, through windows (23) of which the profiles (18, 19), and whose ring (52) is adapted to produce the tightening of one against another profile. 23. Fence according to claim 22, characterized in that the vertical uprights (1) comprise through holes (9) for the pin (51) of the eyebolt (50), so that, in operative position, it crosses both profiles (18, 19) and a vertical upright (1). 24. Fence according to claim 22 or 23, characterized in that the pin (51) of the eyebolt (50) is provided with holes (53) that collaborate with a pin (54) for fixing the eyebolt in its operative tightening position. 25. Fence according to claim 23, characterized in that the pin (51) of the eyebolt (50) is a smooth pin, smaller in diameter than the inside diameter of the through hole (9), and is provided with wings (55) adapted for to be able to cross the windows (23) of the profiles (18, 19) and to act as a stop against the vertical upright (1), so that, in the operative position of mounting and tightening, the wings are arranged between the upright (1 ) and the profiles (18, 19) and these are tightened by the ring (52) of the eyebolt (50). 26. Fence according to any one of the preceding claims, characterized in that the profiles (18, 19) constituting the telescopic stringers (3) are pre-assembled at the factory.