RU194851U1 - Device for protecting a person from falling from a height - Google Patents

Abstract

The utility model relates to the field of ensuring human life safety when performing high-altitude work and can be used to protect a person from falling from a height, for example, on the supports of overhead power lines or portals of open switchgears. A device for protecting a person from falling from a height, containing a rigid anchor line made with the possibility of fixing on a support, consisting of segments interconnected, end stops located at the ends of a rigid anchor line , a slider-type personal protective equipment comprising a housing and a lever and mounted on a rigid anchor line with the possibility of movement and self-locking, characterized in that the segments of the rigid anchor line are made of pipe, and the slider-type personal protective equipment body has an internal profile with a groove corresponding to the external pipe profile. 4 ill.

Description

The utility model relates to the field of ensuring the safety of human life when performing high-altitude work, and can be used to protect a person from falling from a height, for example, on the supports of overhead power lines or portals of open distribution devices.

The blocking device for moving along a rigid anchor line is known from the prior art (patent for utility model No. 180367, “Slider blocking device for moving along a rigid anchor line”, IPC H02G 1/02, A62B 1/00, publ. 06/08/2018).

The prior art device for preventing a person from falling during the ascent and descent on the supports of overhead power lines (patent for invention No. 2693960, "A method for preventing the person from falling during the ascent and descent on the supports of overhead power lines and a device for its implementation", IPC H02G 1 / 02, A62B 35/00, publ. 08/08/2019).

The disadvantage of these analogues is the complexity of the design of the segments of the rigid anchor line, which reduces the reliability potential of the device made of C- and T-shaped profiles, as well as the complexity of the slide devices having up to five rolling rollers, providing movement of the slide device along the rigid anchor line by rolling . These designs require increased attention during operation, which leads to a decrease in reliability potential. When moving the slider device along the anchor line from the C-shaped profile, at the moment of a person’s breakdown, the stop occurs due to the tongue of the lever of the slider device entering the hole of the guide of the C-shaped profile. The stop occurs instantly, which increases the load on the person.

The prior art device for protecting a person from falling (GOST R58193-2018 / EN 353-1: 2014 Occupational safety standards system (SSBT). Personal protective equipment against falling from a height. Protective equipment against falling from a height of a slide type on an anchor line. Part 1. Protective equipment from falling from the height of the slide type on a rigid anchor line. General technical requirements. Test methods), adopted as a prototype and containing a rigid anchor line made with the possibility of fixing on a support, consisting of segments, connected interconnected, end stops located at the ends of a rigid anchor line, a means of individual protection against falling slider type (SIZPT), mounted on a rigid anchor line with the ability to move.

GOST R58193-2018 / EN 353-1: 2014 establishes the requirements and test methods for a rigid anchor line and slider-type personal protective equipment as a single system, but does not offer specific technical design solutions to meet these requirements.

The technical result of the claimed utility model is to ensure the simplicity of the design of the device and the stable reliability of the device.

The specified technical result is achieved due to the fact that in the device for protecting a person from falling from a height, containing a rigid anchor line, made with the possibility of fixing on a support, consisting of segments interconnected, end stops located at the ends of a rigid anchor line, individual means protection slider type, comprising a housing and a lever and mounted on a rigid anchor line with the ability to move and self-block, according to a utility model, segments of a rigid anchor line in made of a pipe, and the body of the personal protective equipment of the slide type has an internal profile with a groove corresponding to the external profile of the pipe.

When performing segments of a rigid anchor line from a pipe, and the body of the personal protective equipment of the slider type, having an internal profile with a groove corresponding to the external profile of the pipe, the simplicity of the design of the claimed device is ensured, and, as a result, stable reliability with free movement of the personal protective equipment of the slide type relative to a rigid anchor line by the slip method, when a person moves up and down. Self-locking of the personal protective equipment of the slide type with the person being held at the moment of its fall occurs due to the force equal to the weight of the person at one end of the lever, while the second end of the lever acts on the segment from the pipe with a much greater force than the person’s weight due to the difference of the lever arms which allows you to effectively brake and stop the personal protective equipment of the slide type, and with it the person.

The device is illustrated by drawings, where in FIG. 1 shows a general view thereof; FIG. 2 - the body of the personal protective equipment of the slide type; in FIG. 3 and FIG. 4 - operation of the lever of the body of the personal protective equipment of the slider type when moving a person up and down, respectively.

So in FIG. 1, the device for protecting a person from falling when working at height contains a rigid anchor line made in the form of segments interconnected and made of pipe 1. A rigid anchor line is made with the possibility of its fastening on a high support. End stops 2 are fixed at the ends of the rigid anchor line 2. Also, the slider type personal protective equipment 3 is mounted on the rigid anchor line with the housing 4 containing the groove 5 (see Fig. 2), while the inner profile of the housing 4 coincides with the outer profile segments made in the form of a pipe 1.

The device operates as follows.

Before starting work at a height, a person attaches himself to a personal protective equipment 3 of a slide type, for example, by means of a damper 6 and a connector 7 (see Fig. 1).

When moving up and down the stairs, installed, for example, on a support, the personal protective equipment 3 of the slide type slides along the segments made of pipe 1. The groove 5 in the housing 4 allows the personal protective equipment 3 of the slide type to slide at the points of attachment of the rigid anchor line to the support. When a person moves up and down (see Fig. 3, Fig. 4), a force F upwards acts on the lever 8 of the housing 4, in this case, a gap is formed between the second end of the lever 8 and the segment from the pipe 1, which allows free movement of the personal protective equipment 3 slide type along a rigid anchor line.

In the event of a person breaking off the stairs, the lever F is affected by a force F downward equal to the weight of the person. The lever 8 is rotated around the axis and the second end acts on the segments of the pipe 1 with a force much greater than the weight of a person due to the difference in the ends of the lever 8 relative to the axis. Due to the arising frictional force between the segments from the pipe 1 and the lever 8, the personal protective equipment 3 of the slide type is braked and stopped. A person occupies a working position and moves again.

Claims (1)

A device for protecting a person from falling from a height, comprising a rigid anchor line made with the possibility of fixing on a support, consisting of segments interconnected, end stops located at the ends of a rigid anchor line, slider type personal protective equipment, comprising a housing and a lever and fixed on a rigid anchor line with the ability to move and self-lock, characterized in that the segments of the rigid anchor line are made of pipe, and the body of the personal protective equipment is slider second type has an internal profile of the groove corresponding to the outer profile of the tube.

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