RU168802U1 - DEVICE FOR FASTENING MEANS OF INDIVIDUAL PROTECTION OF WORKERS WORKING ON THE ROUND OF SECTION - Google Patents

Abstract

A device for attaching personal protective equipment working on a circular support pole can be used to protect people working at height, mainly on the supports of high-voltage power lines and overhead communication lines. The device consists of two tape half-clamps connected to a clamp. Some ends of the half-clamps are rotated through an angle of 90 degrees and holes are made for fasteners along the generatrix of the clamp. The second ends of the clamps are made with protrusions. One half-clamp has a central protrusion, while the other has a bottom and top. The ends of all protrusions are bent twice outward at an angle of 90 degrees, forming L-shaped bends. Inside the L-shaped bends for connecting the ends of the clamps, a wedge is made tightly, made with the upper side shelves. When the load acts on the wedge, the latter wedges the clamp and rigidly fixes the device to the support. To prevent the collar from slipping through the L-shaped bends, the upper side flanges are on the wedge. A hole is made in the wedge to secure the safety element. To prevent slipping, protrusions can be made on the inner surface of the clamp. The device has a simple design, which allows you to securely fasten the safety elements to the support, provides quick removal of the device from the support and its transfer. 1 s.p. f-ly, 5 ill.

Description

The invention relates to devices for fastening flexible elements to rigid high-altitude long supports, and more specifically to the design of tape clamps, which can be used mainly on the supports of overhead communication lines (VLS) and high-voltage power lines (VLE) for securing safety ropes, slings and other safety elements to protect working people from falling from a height.

When climbing a support, stairs, claws or manholes are used. In accordance with the current rules on labor protection, when working at heights when lifting to a support and working at heights, safety systems must be used. The upper part of the VLS and VLE support in the Russian Federation is not equipped with rigid anchor points for attaching safety systems.

There is a known principle of fastening a flexible anchor point onto supports, for example, a SAFE-TEK device (http://www.safe-tec.ru/products/zakhvaty/ Flexible anchor lines). The disadvantage of this technical solution is that the fastening of flexible anchor points on the supports of the VLS and VLE is not always possible from a technical point of view. Namely:

- part of the VLE supports at their upper point have an installed insulator and a power line, so it is technically impossible to put an anchor loop on such a support;

- VLS supports in the upper part have hooks for installing insulators and a traverse for fastening communication lines. When donning the anchor loop to the support, it slides onto the hook or yoke, which becomes the fulcrum. The hook and traverse are not designed for the load, which should be in accordance with the Rules on labor protection when working at a height of 22 kN;

- on supports that have a lot of wires fastened in different directions, there is the difficulty of putting on a flexible anchor loop, as well as the difficulty of removing this loop from the support after work;

- an amplifier is usually installed on the cable supports of the VLS in the upper part of the support. When putting on the anchor loop on the support, it slides onto the amplifier, which becomes the fulcrum. The amplifier mount is not designed for longitudinal load, which should be in accordance with the Rules of 22 kN.

Mounting devices such as clamps are widely used in the technique. They have found application in construction and in various industries in cases where large axial and radial mechanical loads act on the joint. Known clamps for connecting pipes or pipe sections (patents for invention RU 2459994, RU 2479778), for connecting pipes and flexible elements (RU 2314452). These clamps are made of two interconnected parts, one ends of which are connected using a bolt or a tightening screw, and the other by means of a jumper (RU 2459994, RU 2479778) or a lock connection (RU 2314452). Also known is a fastening unit supporting UPB (TU 5221-056-27560230-12), designed for supporting cable fastening on reinforced concrete supports of VLE and other supports of circular cross section with a diameter of 250 to 700 mm. It contains two tape half-clamps connected into a clamp, pulled together by means of studs, nuts and washers. A wedge is welded perpendicularly to the outer surface of one of the clamps. At the end of the wedge there is a hole for fixing a flexible element (cable). The clamp can withstand a working load of up to 20 kN. The mount on TU 5221-056-27560230-1 closest to the claimed utility model and adopted as a prototype. The disadvantage of the prototype is the limited size of the mount, which does not allow for the adjustment of the inner diameter of the clamp to the required diameter of coverage of the support and thereby provide a reliable rigid anchor point for the safety system without violating the integrity of the support. In addition, the prototype device does not allow quick removal and fast reliable fastening of the device on a support for people working at height.

The technical problem that the utility model addresses is the creation of a simple, reliable, and quick-detachable device for securing the protective equipment for people working at height on a support, thereby ensuring their safety when performing high-altitude work and when falling.

The technical problem is solved as follows.

The inventive device for attaching personal protective equipment working on a circular support, as well as the prototype, contains two tape half-clamps connected to the clamp, fasteners and a wedge with a hole for fixing a flexible element on the clamp.

Unlike the prototype, one end of each half-clamp is rotated 90 degrees. On rotated planes, a series of holes are made for fasteners directed along the generatrix of the clamp. The second ends of the half-clamps in the inventive device are connected using a wedge designed to fix the flexible element, for this the ends of the half-clamps are made with protrusions, one half-clamp having a central protrusion, and the second two protrusions, lower and upper. The ends of all protrusions are bent twice outward at an angle of 90 degrees, forming L-shaped bends. The wedge for fixing the flexible element in its upper part has side flanges and is tightly installed inside the L-shaped bends with the possibility of limited movement to the stop of its upper side flanges under the influence of the load.

In a particular case, the inner surface of the clamp can be made with protrusions that increase the reliability of mounting the device on a support by enhancing the effect of preventing slipping.

The technical problem is solved by providing a rigid fixation on the support of the inventive device design and preventing its sliding along the support.

The utility model is illustrated by drawings, where in FIG. 1 shows a half collar with a central protrusion at the end, FIG. 2 shows a half-clamp with upper and lower protrusions at the end, in FIG. 3 shows the fasteners; in FIG. 4 shows a fixing wedge. In FIG. 5 shows the device in assembled form.

A device for attaching personal protective equipment working when working at height on a circular support is made in the form of a clamp, which includes two metal detachable half-clamps 1 and 2. Half-clamps are made of strip steel. On one side of the first coupling half 1, the steel strip was turned 90 degrees and several holes were made in it along the forming half coupling, for bolt 5 with washer 4 and nut 3. On the other side of coupling half, the plate was milled on each side, for example, by 1/3 its width, and the remaining central part has a L-shaped bend under the fixing wedge 6. On the other half-clamp 2, also on one side, the steel strip is turned 90 degrees and several holes are made in it, directed along the half-clamp forming, under the bolt 5 with washer 4nut 3 to create the movable hinge connection and the possibility of attaching it to the support. By changing the bolted holes, you can adjust the internal diameter of the device to the required diameter of coverage of the support. On the coupling half 2, for example, also 1/3 in width, the central part of the plate for the L-shaped part of the half-clamp 1 is inserted into it. The two protrusions of the plate 2 obtained are bent to form L-shaped bends under the fixing wedge 6. L-shaped bends on both half-clamps are bent in such a way that a fixing wedge 6 passes through them. The wedge 6 has in the upper part lateral shelves that prevent loss.

When installing a bolt 5 with a washer 4 and a nut 3 in one of the holes on one side of the device, a swivel joint is obtained, which allows you to adjust the internal diameter of the device to the diameter of the support on which the climbing work will be performed. The device is wrapped around the support, and the protrusions with L-shaped bends enter into each other, forming between themselves a certain space for placing in it a fixing wedge 6 made of strip steel. A hole is made in the lower part of the wedge 6 for fastening protective equipment working at a height, and its diameter should allow these protective equipment to be fixed. L-shaped bends do not allow the wedge 6 to fall out, and the wedge 6 itself bursts the ends of the bends, squeezing and fixing the clamp on the support. Metallic protrusions can be made on the clamp on the inside to enhance the prevention of the device sliding on the support.

When a worker performing work at a height on a support falls, under his weight, the wedge 6 will additionally burst the bends of the device, and the clamp will compress more strongly around the support, which allows the device to be rigidly fixed on the support and does not allow the device itself to slide down. In accordance with the rules on labor protection when working at height, the device must withstand a load without destruction of 22 kN. The proposed device can withstand the specified load.

A device for attaching personal protective equipment for workers working at height is installed on the supports of overhead communication lines and power lines as a rigid anchor point for attaching safety systems. The design of the device allows for quick removal from the support and is a portable device. This device is installed when it is impossible to use the car lift for maintenance and repair of VLANs and VLE (rugged terrain, remoteness and other reasons) and the inability to attach flexible anchor lines when the worker lifts the support using claws.

A quick-detachable portable device for attaching personal protective equipment working when working at heights works as follows. Before carrying out work at a height, first, taking into account the dimensions of the support, one ends of the half-clamps 1 and 2 are connected by fasteners 3, 4 and 5, then the worker rises to the support using claws or ladders. It covers with a clamp a support and a wedge 6 fixes the device. After that, after checking the strength of the device’s fastening on the support, the worker attaches to the bursting wedge 6 a grip installed on the safety cable (without the possibility of removal from the cable). The capture includes a locking device. When a person falls from a support, the locking device on the safety cable prevents the person from falling to the ground. It slows down and a person hangs on a safety cable, which is securely secured to a support with a clamp. This ensures the safety of support work.

Claims (2)

1. A device for attaching personal protective equipment working on a circular support section, comprising two tape half-clamps connected to the clamp, fasteners and a wedge with an opening for securing the flexible element, characterized in that one end of each half-clamp is rotated 90 degrees and rotated the planes along the generatrix of the clamp have holes for fasteners, and the second ends of the clamps are connected with a wedge to secure the flexible element, for this the end of one clamp has a central the protrusion, and the end of the second - two protrusions, lower and upper, and the ends of all the protrusions are bent twice outward at an angle of 90 degrees, forming L-shaped bends, and the wedge in its upper part has side flanges and is tightly installed inside the L-shaped bends with the possibility of limited movement to the stop of its upper side shelves on the clamp when exposed to a load. 2. The device for mounting according to claim 1, characterized in that the protrusions are made on the inner surface of the clamp.

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