RU174284U1 - Support clip for overhead power line wires - Google Patents

Abstract

The support clamp for the wires of the overhead power line is designed to suspend and secure the wires to the insulating suspensions of the intermediate supports of overhead power lines of various voltage classes. The clamp contains a body with a longitudinal boat and two eyes. Four tides with holes are made on the body, placed in pairs on the sides of the body on two sides of the eyes. The boat has cylindrical grooves for placement of rubber damping U-shaped inserts in them. The clamp is also equipped with two identical clamping dies made with a central clamping part and two lateral tides located at one of the ends of the dies. One of the tides of each die is made with an opening for the first tightening bolt, and the second tide is made with a through longitudinal groove facing the end of the die for the second tightening bolt to enter. A longitudinal cavity is made in the central part of each die for installing a rubber damping insert with a central external longitudinal groove under the wire. The tightening bolts are fixed in the tide holes of the clamp housing. The clamping dies are mounted on the clamping body with the possibility of rotation around the axis of the first tightening bolts with the possibility of the second tightening bolts entering the longitudinal grooves of the second tides of the dies. The elements of the supporting clamp are made of non-magnetic materials, for example, the clamping case and clamping dies are made of aluminum-based alloys, stainless steel, and damping inserts made of rubber. Using a utility model eliminates the possibility of mechanical wear of the wire due to its friction against clamping housing by reducing static and dynamic loads in the wire support area, as well as providing a simple, reliable and correct installation of the supporting clamp, eliminating the human factor when installed on power lines due to the complete assembly of the supporting clamp at the factory. 12 ill.

Description

This utility model relates to blind support clamps for overhead power line wires and is intended, in particular, for suspension and fastening of aluminum, steel-aluminum wires to insulating suspensions of intermediate supports of overhead power lines of various voltage classes.

Known support clip according to copyright certificate No. 262206, IPC H02g 7/05, priority 12/23/1965, This support clip for the wires of power lines contains a suspension and a boat made with ledges, as well as a mechanism for clamping the wire in the form of dies. The wire clamping mechanism is equipped with a sector ridge with a center of radius of the sector coinciding with the center of rolling of the boat and providing locking of the boat and suspension from their mutual disengagement. The dies are pressed to the wire with U-bolts and nuts.

The disadvantages of this support clamp include the complexity of its design, as well as the complexity of its installation directly on the power line. In addition, the vibration load on the wire at its attachment to the insulating suspension leads to mechanical wear of the electric wire due to its friction against the body of the clamp boat.

As the closest analogue (prototype) in terms of the number of matching essential features to the claimed clip, a support clip for wires of an overhead power transmission line according to RF patent No. 2303846, IPC H02G 7/05 with a priority of November 30, 2005 is selected. This support clip contains a boat with eyelets and a groove for a wire, U-shaped tightening bolts, a die with a groove for a wire placed in its lower part and with grooves for U-shaped tightening bolts located in its upper part. Despite the fact that this design of the clamp is simpler than the previous analogue described, however, it has the same disadvantages:

- the complexity of mounting the support clamp directly on the power line;

- the design of the supporting clamp does not exclude the mechanical wear of the fixed electric wire due to its friction against the hull of the boat.

The utility model solves the following tasks:

- elimination of the possibility of mechanical wear of the wire due to its friction against the clamp housing by reducing static and dynamic loads in the area of support of the wire;

- allows for simple, reliable and correct installation of the support clamp, eliminating the human factor when it is installed on the power line due to the complete assembly of the support clamp at the factory, and the absence of individual parts mounted directly on the power line.

The formulated problems are solved in that the supporting clamp for the wires of the overhead power line, comprising a body with a longitudinal boat under the wire, with two eyes placed symmetrically on both sides of the boat in its central part, and with four tides with holes made in pairs on the sides the housing on both sides of the eyes, the pressure plate and the tightening bolts located in the holes of the tides of the body, is equipped with a second pressure plate identical to the first plate. Each die is made with a central clamping part and two lateral tides located at one of the ends of the dies. One of the tides of each die is made with an opening for the first tightening bolt, and the second tide is made with a through longitudinal groove facing the end of the die for the second tightening bolt to enter. The dies are mounted on the clamp case with the possibility of rotation around the axis of the first tightening bolt located in the hole of the tide of the die and fixed in one of the tides of the clamp body, and with the possibility of the second tightening bolt entering the longitudinal groove of the second tide of the die. In addition, a cylindrical groove is made in the boat at both its edges, in which rubber damping U-shaped inserts are installed, and a longitudinal cavity is made in the central part of each die for installing a rubber damping insert with a central external longitudinal groove under the wire.

The essence of the utility model is illustrated by the following drawings, in which are presented: in FIG. 1 - housing supporting clamp in a perspective view; in FIG. 2 - plate in a perspective view, top view; in FIG. 3 - die in a perspective view, bottom view; in FIG. 4 - a clamp housing in a perspective view with dies mounted on it in a rotated (initial) position; in FIG. 5 is the same as FIG. 4 - dies in working position; in FIG. 6 is a longitudinal section through a clamp body; in FIG. 7 is a clamp housing, an end view with a partial cross section of the boat in the area of the damping insert; in FIG. 8 is a cross section of a clamp assembly in the area of tightening bolts; in FIG. 9 is a cross section of a clamp assembly in a damping insert installation area; in FIG. 10 - damping insert for dies in a perspective view; in FIG. 11 - damping U - shaped insert for the boat; in FIG. 12 is a view of a support clamp in a working position mounted on a string of insulators of an intermediate support of an overhead power transmission line in a perspective view.

The support clamp for wires comprises a housing 1 with a longitudinal boat 2 for a wire 3, with two eyes 4 (for example, two-armed), in which coaxial holes 5 are made. The eyes 4 are placed symmetrically on both sides of the boat 2 in its central part. On the housing 1 there are four tides 6 with holes 7, placed in pairs on the sides of the housing 1 on both sides of the eyes 4 (Fig. 1). In the boat 2, cylindrical grooves 8 are made on both its edges to accommodate the rubber damping U-shaped inserts 9, for example, by pressing or gluing.

The clamp is also equipped with two identical (interchangeable) clamping dies 10. Each plate 10 is made with a central clamping part 11 and two side tides 12 located at one of the ends of the dies. One of the tides 12 _{1 of} each die is made with a hole 13 for the first tightening bolt 14 ₁ and the second tide 12 _{2 is} made with a through longitudinal groove 15 facing the end of the die for the second tightening bolt 14 ₂ to enter. In the central part 11 of each die 10, a longitudinal cavity 16 is made for installation, for example, by pressing or gluing a rubber damping insert 17 with a central external longitudinal groove 18 under the wire 3.

The tightening bolts 14 are fixed in the tides 6 of the clamp body 1, for example, by means of nuts 19 pressed with washers 20 in the housing or by threaded holes (not shown) made in the housing 1. It is advisable to carry out the tightening bolts with a countersunk head and an internal hexagon. Hardware (tightening bolts 14, nuts 19 and washers 20) are preferably made of non-magnetic material, stainless steel. The tightening bolts 14 can also be made of galvanized steel, however, to exclude their influence on the crown and on the magnetization reversal losses, they should be hidden in the body of the tides 12 of the dies 10 and in the body of the tides 6 of the housing 1 of the clamp and not protrude beyond their dimensions.

The clamping dies 10 are mounted on the clamp body 1 with the possibility of rotation around the axis of the first tightening bolts 14 _{1 of the} tides 12 ₁ located in the holes 13 _{of the} dies 10 and with the possibility of the second tightening bolts 14 ₂ entering into the longitudinal grooves of the second tides 12 _{2 of the} dies 10. For clarity in FIG. . 4 shows the clamp body with the dies mounted on it in the turned initial position, where the second tightening bolt 14 ₂ in the foreground is removed, where there are also no rubber damping U-shaped inserts 9 in the cylindrical grooves 8 of the boat 2.

Elements of the supporting clamp are made of non-magnetic materials, for example, the clamp housing 1 and clamping dies 10 are made of aluminum-based alloys, stainless steel hardware 14, 19, 20, and rubber damping inserts 9, 17, which eliminates the magnetization reversal loss. The clamp does not have sharp edges, which eliminates crown loss.

Preliminary complete assembly of all structural elements of the supporting clamp as a single product is carried out at the factory, which avoids the fall of its individual parts to the ground during installation directly on the power line. At the same time, damping U-shaped inserts 9 are pressed into the cylindrical grooves 8 of the boat 2 of the housing 1, and damping inserts 17 are pressed into the cavity 16 of the dies 10. Both pressure dies 10 are pre-fixed to the clamp body 1 by means of tightening bolts 14 ₁ , which are installed in the holes 13 protrusions ₁₂ January dies 10 and screw into nuts 19, pressed into the holes 7 of the projections 6 of the body 1. The tightening bolt ₁₄ February through slot 15 projection ₁₂ February ram 10 also screw into the nut 19 pressed into the holes 7 of the projections 6 of the housing 1. While maintaining conductive clamp as a product ready for connection with the reinforcement or insulating.

The installation of the supporting clamp is as follows.

The tightening bolts 14 relax. The pressure dies 10 are rotated around the axis of the first tightening bolts 14 ₁ located in the holes 13 of the tides 12 _{1 of the} dies 10. In this case, the second protrusion 12 ₂ dies 10 through the groove 15 out of contact with the second tightening bolt 14 ₂ . The dies 10 are turned until the access of wire 3 to the boat 2 is released. Then, the wire 3 is longitudinally placed in the boat 2 with contact with the inner surfaces of the U-shaped damping inserts 9. After placing the wire 3 in the boat 2, the pressure plates 10 are turned in the opposite direction to the stop in the working position. In this case, the second protrusion 12 _{2 of the} dies 10 through the groove 15 comes into contact with the tightening bolt 14 ₂ . The tightening bolts 14 are pre-tightened. The clamp is attached to standard network fittings, for example, to the insulator pestle 21 by means of eyes 4, after which four tightening bolts 14 are finally tightened with a reference force.

In the process of tightening the bolts 14, the pulling force from the bolts 14 is transmitted by clamping dies 10 to their damping rubber inserts 17, which press the wire 3 to the damping inserts 9 of the boat 2. Such a reliable fastening of the wire 3 in the blind support clip by means of two ring damping supports, with one on the other hand, eliminates wire slippage, and on the other hand, reduces static and dynamic loads on the wire, minimizes bending and protects it from abrasion during vibration, for example, from wind loads ruzok. Thus, the wire is better able to withstand mechanical stresses and vibrations than with a standard fastener assembly.

The claimed simple construction of the supporting clamp allows the exclusive human factor to be made simple, reliable and proper mounting of the clamp, avoiding the falling of parts of the structure to the ground when it is installed on power lines.

Claims (1)

A support clamp for overhead power line wires, comprising a housing with a longitudinal boat under the wire, with two eyes arranged symmetrically on both sides of the boat in its central part, and with four tides with holes made in pairs on the sides of the body on both sides of the eyes, a pressure die and tightening bolts located in the holes of the tides of the body, characterized in that it is equipped with a second pressure die identical to the first die, with each die made from a central a pressing part and two lateral tides located at one of the ends of the dies, one of the tides having a hole for the first tightening bolt, and the second tide with a through longitudinal groove facing the end of the die for the second tightening bolt to enter, the dies are mounted on the housing clamp with the possibility of rotation around the axis of the first tightening bolt located in the hole of the tide of the die and fixed in one of the tides of the clamp housing, and with the possibility of the second tightening bolt entering the longitudinal p of the second tide dies, moreover, in the boat on the two ends are cylindrical bores, in which are installed rubber damping U-shaped parts, while in the central part of each ram is formed a longitudinal cavity for mounting a rubber damping insert with a central external longitudinal groove for the wire.

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