ES2391680A1 - Security device for stairway hollows on the work. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

A security device for stairwells on the site comprising tubes that support the lower floor of the staircase and fixing means that are fixed to the floor of the horizontal sections of the staircase. The device also comprises a safety rail constituted by upper, lower beams and a net. To connect the railing to the tubes, a bushing is used which slides externally to the tubes and means for fixing the bushing to the tube, said bushing comprising means for securing the upper and lower beams to allow support thereof. (Machine-translation by Google Translate, not legally binding)

Description

SAFETY DEVICE FOR STAIRCASE HOLES

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DESCRIPTION OF THE TECHNICAL FIELD OF THE INVENTION

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The invention falls within the field of stair safety devices and, more specifically, devices for protection in stairwells in a building under construction.

BACKGROUND OF THE INVENTION

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Health and safety considerations are becoming increasingly important in construction work. During the construction processes of a building, it is normal to have safety devices to protect stairwells. These types of devices usually consist of provisional handrails that are arranged in the stairwells for the protection of the operators. There are multiple safety systems for stairwells on the market. Spanish utility models 1 045228, 1 056752 and patent ES 1063691 describe safety systems for stairwells on site, in which the posts or vertical tubes are anchored to each flight of stairs, so that a railing is obtained. provisional during the construction of a building that is configured in such a way that it allows adaptation to any inclination of the stair slab.

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In some of these systems, the use of stair protection networks is known, such as, for example, the described patent US 2009/0039327. like in the

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The use of racks and handrails that establish a perimeter barrier are also known. Some examples of this type of system are described in documents U 1045228, U 1052218 and ES 2299642. There are also documents that describe the elements that allow the frame to be attached to the handrail, such as utility model 106369, the patent ES 1059166, US 20002/0104987. Other documents, such as ES 1 056752, US 6279880, ES 1 063092, ES 1 066859, refer to the elements that allow the safety system to be attached to the ground.

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All these systems do not allow them to be used until the end of the work without having to remove them to finish the work, mainly because they are attached to the ground and to the steps of the stairs.

The aforementioned problem is solved with the device object of the invention because:

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the device does not rest on the flights of stairs unlike other devices,

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the collation and fixation of the device is carried out by means of screws and pressure, while other devices are attached to the slab with elements that make it necessary to use rotaflex-type machinery,

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the base of the floor (at the foot of the ladder) is movable, so it can be raised to carry out work on the floor.

DESCRIPTION OF THE INVENTION

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The invention refers to a protection system in stairwells that comprises a set of elements that allow installing a stair handrail system in new works from the beginning of its construction until the system is replaced by the final railing of the house. , offering support and protection at all times.

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With the device, object of the invention, in addition to providing greater security, it is not necessary to assemble and disassemble it repeatedly, being able to place it at the beginning of the work and remove it at the end.

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The stairs on site are made up of inclined sections and horizontal sections arranged between two inclined sections, which start from a lower floor and end on an upper floor. The safety device for stairwells on site includes:

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a support structure, made up of tubes that can be attached in a vertical position to allow the vertical progression of the support structure, fixing means configured to fix the support structure to the stairwell, some upper beams and some lower beams, intended to be placed between the pipes with an inclination substantially similar to the inclined flights of the ladder, so as to form a safety railing, connecting means configured to join the upper beams and the lower beams to the pipes,

an attachable network between an upper side member and a

bottom stringer,

In all known systems, tubes do not directly support

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on the lower floor, but are supported by flights of stairs,

making it necessary that part of these tubes have to be removed, so

assembly and disassembly time is long. On the device of the

invention, the tubes rest on the bottom floor and the fixing means are

they fix the slab of at least one of the horizontal sections. Furthermore, the

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connecting means comprise a sleeve sliding externally to the

tubes and means for fixing the bushing to the tube, such as a

captive screw, said bush comprising fastening means of

the upper and lower stringers. These means of securing the

Upper and lower stringers can be a curved rod attached to the

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bushing, configured to support the stringers. Rod shape

It could be anyone who served to support the stringers. For other

part the sliding bushing is hooked to the net to prevent the

stringers can move.

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The upper and lower stringers can be shaped

substantially cylindrical, presenting along its entire length, a

T-shaped fold, notched at the edges of the T-wings.

These notches are configured to allow the fixing of staples

designed to allow the fastening of the net to the stringers.

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The upper stringers act as handrails to support the

hand, when ascending or descending the ladder and lower stringers

act as a baseboard and keep the net taut. The network provides greater security to

system, by preventing the fall of objects or people in the space between

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upper and lower stringers and, in addition, it acts as a union between both. The

net can be made of polyamide or any other fiber. The set formed by

the upper stringers, the lower stringers and the net make up the

safety railing.

The fixing means that fix the support structure to the floor of the

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horizontal flights of the ladder, may comprise a steel strap,

folded as a loop, comprising a hole through which the

tube and two divergent branches with their ends folded, through the

which is fixed to the slab of the horizontal section by means of anchorage, such as

for example screws and dowels, allowing their installation

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regardless of whether the ladder is made and does not prevent

formwork works.

As previously mentioned, the tubes that make up the

Support structure are supported on the lower floor. For this the tubes

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they can rest on support feet destined to remain partially

housed inside the tubes. To allow vertical regulation of

tubes with respect to the lower floor, depending on the needs of each

In this case, the device may comprise fixing means between the feet

and tubes, such as moths. Therefore these feet of

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support serve as support and base in the ground and have a diameter less than

the tubes so that they are partially housed. Support feet can

lean against holes made in the concrete to prevent it from

displace.

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Furthermore, the coupling of two correlative tubes is carried out

by means of a connection element that is partially housed in the

interior of the two tubes, comprising fixing elements between the two

tubes and connecting element. This connection element can be for

example an internal tube that can be fixed to the tubes by

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captive bolts.

DESCRIPTION OF THE DRAWINGS

To complete the description and in order to help a better understanding of the characteristics of the invention, according to a preferred example of the embodiment thereof, a set of drawings is included as an integral part of said description, in which, with character illustrative and not limiting, the following has been represented:

Figure 1.- Shows a view of the device object of the invention supported at the foot of the stairs and protecting two flights of stairs.

Figure 2.- Shows a view in elevation and profile of two different configurations of the bushing and the rod.

Figure 3.- Shows a detailed perspective view of the means of fixing the support structure to the slab of a horizontal section of the ladder.

Figure 4.- Shows a detailed view of the upper beam supported on the rod and of the fastening of the net through the clips.

Figure 5. Shows the mounting of the fixing means to the slab of the horizontal section.

Figure 6.- Shows a perspective view of the device object of the invention mounted on two flights of stairs.

PREFERRED EMBODIMENT OF THE INVENTION

Figure 1 shows the device object of the invention mounted, for example, on two flights of stairs. As seen, the ladder

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It is made up of inclined sections and horizontal sections planned between two inclined sections, which start from a lower floor and end on an upper floor. As seen in figure 1, the device comprises tubes (1) that are supported on the lower floor of the staircase through support feet (9). These support feet (9) have a diameter smaller than that of the tubes (1), so they remain partially housed inside the tubes (1). To allow the vertical regulation of the tubes (1) with respect to the lower floor, the device may comprise fixing means between the feet (9) and the tubes (1). Once the adequate height of the tubes (1) has been achieved, they are fixed to the support feet (9) using, for example, wing nuts.

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As can be seen in figure 1, the safety railing (5) is made up of some upper rails (3) that act as handrails, some lower rails (4), that act as a baseboard and a network (7) which is fixed to both stringers (3, 4) through clips.

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To fix the stringers (3, 4) to the tubes (1), a connection means (6) is used that includes a bushing (61) that can be slid externally to the tubes (1).

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Figure 2 shows a detailed view of the aforementioned connecting means (6), where it is observed that the bushing (61) comprises a curved rod (62) attached to said bushing (61), configured to allow the support of the stringers (3, 4). On the other hand, the sliding bushing (61) is hooked to the net (5) to prevent the stringers (3, 4) from moving.

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Figure 4 shows a detailed view of the support of the upper side member (3) on the rod (62) of the bushing (61). In the case of the stringer

lower (4) the same would happen. In this figure 4 it is seen that the stringers (3,

4) have a substantially cylindrical shape, presenting along

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its length, a fold in T shape, endowed with notches in the

T. wing edges

in these notches are attached to the staples

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which joins the network (7).

The device object of the invention also includes means

Fixing (2) configured to allow the fixing of the tubes (1) to the

horizontal flights of stairs. In figure 3, we can see these means

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fixing (2), which comprise a strap of steel (twenty-one ), bent to

loop mode, which includes a gap through which the tube (1) is inserted and

two divergent branches with their ends folded, through which they

fixed to the floor of the horizontal section by means of anchorage,

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example screws and dowels.

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In figure 1, it is seen how the tubes (1) are vertically coupled to

form a support structure. The coupling of two correlative tubes (1)

it is made by means of an internal tube (1 O) that remains partially housed

inside the two correlative tubes (1).

The inner tube (1 O) can

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be fixed to the tubes (1).

Claims (6)

1. Safety device for stairwells on site, the aforementioned stairs comprising inclined sections and horizontal sections provided between two inclined sections, which start from a lower floor and end on an upper floor, comprising: a support structure, made up of tubes (1) that can be coupled in a vertical position to allow the vertical progression of the support structure, fixing means (2) configured to fix the support structure to the stairwell, some upper beams (3) and lower stringers (4), intended to be placed between the tubes (1) with an inclination substantially similar to the inclined sections of the ladder, so as to form a safety railing (5), connecting means (6) configured to attaching the upper beams (3) and the lower beams (4) to the tubes (1), a net (7) that can be coupled between an upper beam (3) and a lower beam (4), characterized in that the tubes (1) rest on the lower floor and that the fixing means are fixed to the slab of at least one of the horizontal sections, and that the connecting means (6) comprise a bushing (61) sliding externally to the tubes (1) and means for fixing the bushing to the tube (1), said bushing comprising means for fastening the upper and lower stringers (3, 4).

2.

Safety device for stairwells on site, according to claim 1, characterized in that said means for securing the upper (3) and lower (4) side members comprise a rod

curved (62) attached to the bushing (61), configured to support the stringers (3, 4).

3.

Safety device for stairwells on site, according to claim 1 or 2, characterized in that the upper (3) and lower (4) stringers have a substantially cylindrical shape, the aforementioned stringers (3, 4) presenting throughout its length, a T-shaped fold, equipped with notches (8) on the edges of the T-wings, the notches (8) being configured to allow the fixing of staples designed to allow the fastening of the net to the stringers (3, 4).

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Safety device for stairwells on site, according to claim 1, characterized in that the fixing means (2) comprise a steel strap, bent as a loop, comprising a gap through which the tube (1) is inserted. and two divergent branches with their ends folded, through which they are fixed to the slab of the horizontal section by means of anchorage.

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Safety device for stairwells on site, according to any of the preceding claims, characterized in that the tubes (1) rest on the lower floor, on support feet (9) intended to be partially housed inside the tubes ( 1), and because it includes fixing means between the feet and the tubes, which allows the vertical position of the tubes (1) to be adjusted with respect to the lower floor.

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Safety device for stairwells on site, according to any of the preceding claims, characterized in that the coupling of two correlative tubes (1) is carried out by means of a connection element (1 O) that is partially housed inside

of the two tubes (1), comprising fixing elements between the two tubes and the connection element.