CZ28554U1 - Pole of protective banister for working site - Google Patents

Description

Stair railing for building site

Technical field

The technical solution relates to a protective stair railing for a building site, more particularly to a guardrail post to protect persons against falling from a free flight of stairs.

BACKGROUND OF THE INVENTION

Temporary free edge protection systems are used in construction work, in particular to protect persons and objects from falling down from roofs, unsecured edges, staircases and other areas where protection is required. Temporary protection systems shall comply with the requirements prescribed in European Standard EN 13374: 2013. This standard also includes requirements for the protection of persons against falling objects, such as the installation of a floor stopper.

For example, German utility model DE 20 2013 008711 U1 discloses a temporary side fall protection post having hooks for attaching boards or laths. The hooks can be oriented in any direction, for example to fasten the slat down to the floor. The post is fixed to a solid steel plate.

The use of a post having two upward-facing railing hooks and one downward-facing railing hook attached to the free edge of the site under construction was published, for example, on the Internet in June 2014 (www.youtube.com/watch ? v = _hKG8GIKHSg).

These prior art documents relate to securing the free edge of a horizontal or slightly inclined surface. Modifying the handrail post for inclined surfaces such as staircases is not described.

The essence of the technical solution

The aim of the technical solution was to create a handrail post specially adapted for mounting on the edge of a free flight of stairs. The technical solution is based on the idea of using a pivotable clamping part of the column to fix the vertical position of the column.

The guardrail post for protecting persons against falling from the free flight of a staircase on a construction site according to the invention has a post body on which at least two handrail element holders are fastened, with a support surface on the lower end of the body to support the staircase. Above the lower end of the pillar bodies, a bracket is pivoted about an axis perpendicular to the pillar body, in which a clamping element is telescopically mounted, on the extension end of which a locking foot is fixed to be pressed against the underside of the stair arm. In the mounted position, the pillar body is oriented vertically, while after tightening the nut, the support surface at the lower end of the pillar body is supported on the horizontal step of the staircase, while the locking foot is firmly pressed against the bottom inclined side of the staircase and the bracket with clamping element is fixed in position perpendicular to the lower inclined side of the flight of stairs.

The clamping element telescopically mounted in the bracket preferably consists of a clamping rod, the upper part of which is formed by a spindle on which a tightening nut is screwed, and to whose lower part a locking foot is attached. The bracket may be formed as a closed rectangular profile, in the cavity of which the lower part of the clamping rod is guided.

Overview of pictures

Giant. 1 is a schematic perspective view of a handrail of a staircase provided with a railing with stair railing columns according to a technical solution,

Fig. 2 is a side elevational view of a stair guard rail according to the present invention, and Fig. 3 is a perspective view of a stair guard post according to the present invention.

Examples of technical solution

If the orientation of any of the pillar elements according to the invention is specified by terms such as upper, lower, vertical respectively. horizontal, these terms always mean orientation in the position in which the post carries the handrail in the mounted, ie protective, position.

FIG. 1 schematically illustrates a stair arm 9 provided with a handrail to protect persons against falling from the free edge of the stair arm 9 in an erected building. There shall be at least two columns on the stair arm 9 with a maximum distance of 1,2 m from each other.

On the body 1 of each post, two handrail element holders 10 are fastened one above the other, so that the handrail has two posts that carry two handrail elements 8 parallel to the stair arm. The handrail element holders 10 are obscured in Figs. 1 and 2, only seen in Fig. 3. At the lower end of the body 1, the abutment surface 4 is supported to support the stair step, while above the lower end of the body 1 it pivots about an axis 3 perpendicular a bracket 2, in the exemplary embodiment formed as a closed rectangular profile, is connected. As shown in Fig. 2, a bracket 5 is telescopically mounted in the bracket 2, the upper part of which is formed by a threaded spindle on which the nut 7 is screwed, and the lower part of which has a rectangular external shape in cross section. At the lower end of the clamp rod 5, a locking foot 6 is attached, which, after tightening the nut 7, is pressed from below to the underside of the stair leg 9.

In the construction of the handrail, the handrail post is erected vertically so that the support surface 4 of the lower end of the post body 1 is supported on the horizontal surface of the stair tread as shown in Fig. 2. The telescopically mounted clamp rod 5 is pulled out of the bracket 2 and such that it is possible to engage and tighten the locking foot 6 from below to the structure of the stair leg 9. Tighten the nut 7 with a torque of about 50 Nm. It is then possible to fit the railing boards 8 into the holders 10 and secure them with nails or screws.

Claims (3)

A stair railing for the protection of persons against falling from a free staircase on a construction site, characterized in that it has a post body (1) on which at least two handrail element holders (10) are fastened, and at the lower end of the body (1). ) of the column is a support surface (4) for leaning on the stair step, whereby a bracket (2) is attached above the lower end of the body (1) pivotally about an axis (3) perpendicular to the column body (1), in which the clamp is telescopically mounted an element on whose extension end a locking foot (6) is fastened to the bottom of the stair arm (9). Stair railing post according to claim 1, characterized in that the clamping element telescopically mounted in the bracket (2) consists of a clamping rod (5), the upper part of which is formed by a spindle on which the nut (7) is screwed and at the bottom is attached locking foot (6). Protective stair rail post according to claim 1 or 2, characterized in that the bracket (2) is designed as a closed rectangular profile and the lower part of the clamping rod (5) corresponds in shape to the opening in the bracket (2).