ES1061444U - Security device for portable ladders (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Safety device for portable stairs, special application for stairs that are constituted by one or more sections (1), either straight or scissors, normally designed to reach high working heights, characterized in that it comprises a rope (2) which extends longitudinally in the vicinity of one of the stringers of the ladder, which has upper (3) and lower (3 ") fastening means to the ladder that keep it taut and which also comprises a mechanism of ascent and descent fall arrester (5) to which the user is attached, which slides on the rope (2) during the user's ascent and descent movement and which locks onto the rope (2) due to the loss of balance of the user, preventing the user from falling of the stairs. (Machine-translation by Google Translate, not legally binding)

Description

Safety device for stairs laptops

Object of the invention

The present invention is applicable to portable stairs of one or several sections, either those that They are formed by straight sections or scissors, resulting from special application for high-rise stairs where it is expected that the fall of the user can cover injuries of a certain severity

It is the object of the invention to provide the ladder with safety elements that prevent the operator from falling during ascent or descent of the stairs.

Background of the invention

The portable stairs of one or several sections they are conceived with different applications, being known some developments aimed at improving safety and security conditions comfort of use.

This is the case of the model request for utility 200401434 called "Extensible Ladder perfected "belonging to the same applicant hereof invention, which refers to a ladder in which it is contemplated, in its scissor position, which the first support section incorporates steps located horizontally with respect to the ground that they make the climb more comfortable for the user, which supports the foot on a flat surface and not on the edge of the steps. He next ascension section also incorporates parallel steps to the ground, of greater width, that are more comfortable and that facilitate greater user positional stability when found Working at height.

On the other hand some solutions are contemplated tending to improve the stability conditions of the stairs of high scissors, since these stairs normally they have a reduced stability against possible lateral blows and / or other causes that may cause its overturn. In this regard and with in order to enhance the safety conditions in the use of stairs, the applicant of the present invention developed about portable ladder stabilizer accessories described in the invention patent 200402727.

These stabilizer accessories are applied in quick and easy way to the stairs, becoming supports supplementary on the floor for scissor stairs, stairs straight leaning on the wall or stairs in scissors attached to the wall, contributing in any case to improve the conditions of lift of the stairs avoiding its lateral overturn.

The stabilizer accessories allow for example the use of the ladder in scissor position up to 8 meters high, even replacing the need for use scaffolding up to that height.

When the operator works on a ladder to from a height of three and a half meters is mandatory compliance with existing safety regulations in relation to the use of protection elements, in this case the operator must of using a harness that secures your position while working.

However, it should be noted that the risk of fall not only exists in the elevated position where it find the operator working, but there is also the possibility that the operator falls while ascending or descending of the stairs.

According to the operation of the means of security that currently exist the operator is seen in the need to disconnect from the ladder when the descent begins with the consequent risk of falling, not contemplating the regulations of security no precept in relation to the measures to implement To avoid that risk.

Injuries caused to the operator such as consequence of a fall can be considerable if this produces at high altitude, as it could happen in the case of using the stairs described in the previous paragraphs.

Thus the possibility of improving safety conditions during the ascent or descent of the ladder make feasible the development of the invention that to described below.

Description of the invention

The safety device for stairs laptops that is the subject of this invention comes to solve the exposed problem by promoting the conditions of safety in the use of stairs, especially stairs that reach high heights.

The proposed security device aims to reduce the risk of falling during ascent or descent on the stairs, as a complement to the mandatory measures compliance that already exists to work at height, contributing therefore to an improvement in working conditions.

The proposed security device raises the use of a fall arrest mechanism and descent that is attached to the harness or seat belt of the user while moving on the stairs and at the same time slides on a rope that is extended extended in the direction longitudinal to the stairs, preferably between a step upper located in the vicinity of the highest point of the ladder and the bottom step, with the help of fixing means that They keep the rope taut.

The fall arrest mechanism is of the type that conventionally incorporate means that release their link to the rope on which it slides during its ascent or descent, and has of retention means that anchor the fall arrest element to the rope when a voltage caused by the empty weight of the Operator when he loses his balance.

Locked position released, element fall arrest accompanies the user in their movement on the ladder, both upstream and downstream, therefore accompanying the operator at all times to avoid his Possible fall at any point on the ladder.

The rope will preferably be installed in the Proximities of one of the stair stringers for not hinder the mobility of the operator during his ascent or decline.

By means of this security device no only the safety of the operator is contemplated during his work at high altitude but protects it from any fall during its movement along the stairs therefore increasing its security conditions.

Description of the drawings

To complement the description that is being performing and in order to help a better understanding of the characteristics of the invention, according to an example preferred practical implementation of it, is accompanied as integral part of that description, a set of drawings where with an illustrative and non-limiting nature, what has been represented next:

Figure 1.- Shows a front view of a section of a ladder in which the safety device is observed for portable stairs that is the object of this invention.

Figure 2.- Shows a view of the stairs similar to the previous one in which an operator is observed during the climbing the ladder linked to it through the safety device

Preferred Embodiment of the Invention

With reference to the figures, a then a preferred embodiment of the device safety for portable stairs presented in this invention.

The security device has application special for stairs that are constituted by one or more sections (1), whether straight, as shown in Figure 1, or in scissors, normally designed to reach high heights of job.

In figure 1 it can be seen that the safety device comprises a rope (2) that extends longitudinally in the vicinity of one of the stringers of the ladder, which has upper (3) and lower fixing means (3 ') to the stairs that keep it tense, preferably one of the first and one of the last steps (4), and that also it comprises a fall ascent and descent mechanism (5) to which the user is linked, which slides on the rope (2) during the movement of ascent and descent of the user and that is embedded in the rope (2) before the user's loss of balance avoiding their drop.

Figure 2 shows the user going up the section (1) of a ladder with a safety harness (6), to which the fall ascent and descent mechanism is linked (5) that slides on the rope (2) during the ascent of the Username.

Claims (1)

1. Safety device for stairs portable, especially for stairs that are constituted by one or more sections (1), whether straight or scissor, normally designed to reach high working heights, characterized in that it comprises a rope (2) that extends longitudinally in the vicinity of one of the stringers of the ladder, which has upper (3) and lower fixing means (3 ') to the stairs that keep it tense and that also includes a fall ascent and descent mechanism (5) to which it is linked the user, who slides on the rope (2) during the movement of ascent and descent of the user and that is locked in the rope (2) before the loss of balance of the user avoiding the fall of the ladder user.