RU2788712C1 - Mobile fall arrest device when working at height - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to the field of construction, namely to safety devices. The mobile safety device is made in the form of a base, at the ends of which fixing elements are installed. One of the fixing elements has a fixed position relative to the base, and the other is made with the possibility of horizontal movement and fixation on the base, in which a hole is made along its central axis. The fixing elements are made in the form of a T-shaped profile, the inner part of which is covered with an elastic material, and a rod is rigidly fixed to the outer part, on the threaded part of which there is a “wing-type” clamping nut, the lower end of the rod ends with a protrusion, and from the opposite end of the base is rigidly fixed ear.

EFFECT: ensuring safety when working at height.

1 cl, 3 dwg

Description

The invention relates to safety devices and can be used to ensure safety, working at height.

Known anchor device for personal protection against falling when working at height [RU 171935, E04G 21/32], containing a carrier base and an anchor eye for mechanical attachment of safety devices, moreover, the carrier base is an upper anchor, with fastening elements of the upper anchor on the supporting structure , and the lower anchor with fastening elements of the lower anchor on the supporting structure along a common vertical axis with the upper anchor, and the safety device is made in the form of a cable, the upper end of which is connected to the anchor eye fixed to the shock absorber mounted on the upper end of the metal rack, fixed on the upper anchor and equipped with fastening elements on the supporting structure, and the lower end is placed in the cable tension element, fixed on the lower end of the lower anchor, as well as the cable holder, made with the possibility of limiting the deviation of the cable from the vertical position, and the slider, placed on the cable and made with the possibility the possibility of attaching user protection equipment to it.

The disadvantage of this technical solution is the relatively narrow functionality to provide reliable protection against falling when the user moves horizontally.

Known anchor device for personal protection against falling when working at height [EN 162160, E04G 21/32], containing a bearing base, to which on one side is attached a vacuum suction cup, communicated with two installed on the base and connected in parallel to placed in this device with the possibility recharging without removing it to the battery by membrane pumps that provide a pull-off force of a vacuum suction cup of at least 12000N and a sliding force at K _tr = 0.5 of at least 6000N at a level of vacuum created by them in the range from -0.65 to -0.75 bar , and on the other hand, an anchor eye passed through a hole in a protective casing placed on the base for mechanical attachment of safety devices.

The disadvantage of the technical solution is the low reliability caused by the use of a vacuum suction cup and a vacuum system, the failure of which can lead to a fall of the user, as well as the complexity caused by the use of a vacuum system. In addition, the known device has a relatively narrow functionality, limiting its use in the absence of flat surfaces for the suction cup at the workplace. All this limits the ability of the device to reliably protect a person from falling when working at height with the possibility of moving him horizontally over a wide range of distances.

The closest analogue to the claimed device is an anchor device for personal fall protection [RU 190427, E04G 21/32, A62B 35/00].

Anchor personal fall protection device made in the form of a base - a rectangular plate and a stand attached to it - a column, at the end of which an anchor point is fixed, while holes are made in the base along the perimeter for attaching the base to the bearing surface. A fastening element is installed in each opening of the base, made in the form of a clamping nut mounted on the threaded part of the shaft, the lower end of which ends with a protrusion. The clamp nut is a wing nut. The protrusion of the lower end of the shaft is a rectangular parallelepiped, installed in the T-shaped groove of the bearing surface. The top end of each shaft is a "flag" showing the position of the protrusion of the bottom end of the shaft.

The known device has the following disadvantages:

1. The complexity of the device.

2. Low reliability of fastening of the device.

3. The need for several devices for free movement on the work surface.

4. The design is not able to provide work on various surfaces.

The objective of the invention is to simplify the design and increase the safety of human protection when working at height.

The problem is solved due to the fact that the mobile safety device, when working at height, is made in the form of a base, at the ends of which fixing elements are installed. One of the fixing elements has a fixed position relative to the base, and the other is made with the possibility of horizontal movement and fixation on the base, in which a hole is made along its central axis. The fixing elements are made in the form of a T-shaped profile, the inner part of which is covered with an elastic material, and a rod is rigidly fixed to the outer part, on the threaded part of which there is a “wing-type” clamping nut, the lower end of the rod ends with a protrusion, and from the opposite end of the base is rigidly fixed ear.

New significant features:

1. One of the locking elements has a fixed position, and the other is made with the possibility of horizontal movement;

2. A hole is made on the base along its central axis;

3. The fixing elements are made of a T-shaped profile, the inner part of which is covered with an elastic material;

4. A rod is rigidly fixed to the outer part of the T-shaped profile, on the threaded part of which there is a “wing” type clamping nut;

5. An eyelet is rigidly fixed on the base.

The listed new essential features, together with the known ones, are necessary and sufficient to achieve a technical result in all cases covered by the requested scope of legal protection.

Technical result

The technical result lies in the simplicity of the design, the possibility of installation and work in rooms with different widths of doorways. The device is easily removable, easy to use, has a low weight, which makes it mobile and portable.

Figure 1 schematically shows the device installed in the doorway (top view).

Figure 2 schematically shows the device in the doorway (3D model).

Figure 3 schematically shows the locking element.

The proposed device consists of a base 1, at the ends of which are two locking element (figure 1). The fixed locking element 2 has a fixed position relative to the base 1, the movable locking element 3 is made with the possibility of horizontal movement and fastening on the base 1, in which a hole 4 is made along its central axis (figure 2). The fixing elements 2, 3 are made in the form of a T-shaped profile 5, the inner part of which is covered with an elastic material 6, and a rod 7 is rigidly fixed to the outer part, on the threaded part of which there is a “wing-type” clamping nut 8, the lower end of the rod 7 ends with a protrusion (figure 3), from the opposite end of the base is rigidly fixed eyelet 9. The device is installed in the doorway 10 and is fixed in it.

The use of a mobile fall arrest device when working at height is suggested as follows:

The worker brings the device with him to the place of work and installs it in the doorway 10, loosening the fixation, using the wing nuts 8, both fixing elements 2, 3 relative to the base 1.

The movable locking element 3 can move horizontally relative to the axis of the base 1 in the hole 4 to adjust the required distance, depending on the width of the doorway 10, sets the movable locking element 3 to the required distance in the hole 4.

Then the fixed fixing element 2 is tightly pressed by the T-profile 5 with elastic material 6 to one side of the doorway 10 and fixed, and the movable fixing element 3 moved to the required distance of the doorway is fixed to the other side of the doorway 10, using the "wing" nuts type 8, moving them along the threaded part of the rod 7.

The fixing elements 2, 3 are made in the form of a T-shaped profile 5, and in the places of contact with the walls of the doorway 10, an elastic material 6 is applied, which allows you to remove possible backlashes when installing the device in the doorway 10, to prevent possible deformation of the wall at the installation sites of the device, as well as to exclude the displacement of the device with a possible dynamic load arising from a possible fall of the worker.

On the side of the fixed fixing element 2, on the base 1, an eyelet 9 is rigidly fixed, into which a safety cable clings (not shown in Fig.), and the second end is attached to the worker with the possibility of changing the length and rigid fixing the required length. The worker moves freely along the window. An inertial device can be used to ensure a constant tension on the lifeline sling.

At the end of the work, the mobile safety device is removed by performing the steps in reverse order.

To ensure better visibility and safety for workers and others, the mobile fall arrest device will be painted in yellow (signal) color.

Due to its low weight, the device can be carried by hand. With sufficient mobility and low cost, this mobile safety device can be equipped with each worker involved in the installation of window blocks, as well as persons in the danger zone.

The mobile safety device is quickly and easily mounted by one worker and just as quickly removed upon completion of work, without requiring additional tools, ensures safety during its operation.

Claims (1)

A mobile safety device when working at height, made in the form of a base, at the ends of which fixing elements are installed, characterized in that one of the fixing elements has a fixed position relative to the base, and the other is made with the possibility of horizontal movement and fixation on the base, in which its a hole is made in the central axis, the fixing elements themselves are made in the form of a T-shaped profile, the inner part of which is covered with an elastic material, and a rod is rigidly fixed to the outer part, on the threaded part of which there is a “wing-type” clamping nut, the lower end of the rod ends with a protrusion, an eyelet is rigidly fixed from the opposite end of the base.

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