CN112821332A

CN112821332A - Pre-twisted conductor spacer

Info

Publication number: CN112821332A
Application number: CN202110281810.9A
Authority: CN
Inventors: 左向阳; 付月影; 皮华威; 吴世付; 彭浩然
Original assignee: Gulifa Electric Co ltd; Gulifa Group Co Ltd
Current assignee: Gulifa Electric Co ltd; Gulifa Group Co Ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-05-18

Abstract

The invention relates to the technical field of spacers and discloses a pre-twisted spacer which comprises a supporting frame, a wire clamp and a pre-twisted wire; the supporting frame consists of two supporting plate pieces and a connecting piece, the connecting piece is positioned between the two supporting plate pieces, and the supporting plate pieces are connected with the connecting piece through bolts; the two wire clamps are arranged and are respectively installed at the two ends of the supporting frame; the wire clamp comprises a wire frame, a positioning frame, a semicircular ring, a fixing block and a screw rod. This preformed helical conductor spacer when the installation, opens the fastener and presss from both sides on the cable to rotatory screw rod closes the fastener, makes the fastener hang on the cable and can not press from both sides tight cable, so can not form stress concentration, influences the performance of cable, and the cooperation preformed helical conductor twines on the cable and fastens the fastener on the cable, so accomplishes the installation of spacer.

Description

Pre-twisted conductor spacer

Technical Field

The invention relates to the technical field of spacers, in particular to a pre-twisted spacer.

Background

The spacer is a fitting which is installed on the split conductors and fixes the space between the split conductors to prevent the conductors from mutually whipping and to suppress the breeze vibration and the sub-span oscillation. The spacing rods are generally arranged in the middle of a span and are arranged at intervals of 50-60 m, and the spacing rods of the two-split, four-split, six-split and eight-split conductors reduce the vibration amplitude of the two-split conductors by 50% and the four-split conductors by 87% and 90% after the spacing rods are arranged on the split conductors compared with the vibration amplitude of the spacing rods.

The wire clamp of the current spacer has various parts, relatively complex process and relatively high cost, in addition, because the clamping heads of the wire clamp adopt a clamping type, the wire clamp body and the pressing plate clamp the wires in a hinge mode, a special mounting tool is required to compress the wire clamp body and the pressing plate firstly during mounting, and then the pressing plate is firmly locked by a pin. The complicated dynamics of being difficult to master of installation once takes place the too big accident that causes fastener body hinge position fracture of dynamics, moreover because the contact surface of narrower centre gripping wire of wire chuck is comparatively easy to form stress concentration, seriously influences the performance of wire, especially high altitude, the circuit engineering in heavily icing the district causes incident such as wire strand breaking easily.

To this end, we propose a pre-twisted spacer.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a preformed spacer.

The invention provides the following technical scheme: a pre-twisted spacer comprises a supporting frame, a wire clamp and a pre-twisted wire;

the supporting frame consists of two supporting plate pieces and a connecting piece, the connecting piece is positioned between the two supporting plate pieces, and the supporting plate pieces are connected with the connecting piece through bolts;

the two wire clamps are arranged and are respectively installed at the two ends of the supporting frame;

the wire clamp comprises a wire frame, a positioning frame, a semicircular ring, a fixing block and a screw rod;

the locating rack is installed on the supporting frame through the bolt, the semicircle ring sets up two and installs the one end of line frame and fixed block respectively, and is articulated between two semicircle rings, the screw rod is installed on the line frame and is connected with the fixed block, and all installs the locating rack between line frame and the fixed block and the semicircle ring on it, the preformed armor rods passes the locating rack and twines on the cable.

Preferably, the inner side of the semicircular ring is provided with a wear-resistant layer.

Preferably, the preformed armor rods are made of aluminum or aluminum-clad steel.

Preferably, the supporting frame and the wire clamp are both made of high-quality aluminum alloy.

Preferably, the circle formed by the two semicircular rings on the wire clamp is slightly larger than the diameter of the cable.

Preferably, threaded holes are formed in the wire frame and the fixing block, and the screw rod is connected with the threaded hole in the fixing block through the threaded hole in the wire frame.

Compared with the prior art, the invention has the following beneficial effects:

this preformed helical conductor spacer when the installation, opens the fastener and presss from both sides on the cable to rotatory screw rod closes the fastener, makes the fastener hang on the cable and can not press from both sides tight cable, so can not form stress concentration, influences the performance of cable, and the cooperation preformed helical conductor twines on the cable and fastens the fastener on the cable, so accomplishes the installation of spacer.

Because the installation of the spacer belongs to high-altitude operation, the more simple and convenient the better the installation mode, the installation process of the spacer can be installed by bare hands without tools, the installation speed and the labor efficiency are greatly improved, the installation quality can be visually checked through visual inspection, and the acceptance difficulty and the cost of ultrahigh voltage line engineering are greatly reduced.

The preformed armor rods enhance the bending rigidity of the contact areas of the cables and the spacing rods and weaken the dynamic stress of the contact areas. Under the same condition, compared with the traditional spacer, the preformed spacer obviously reduces the static and dynamic stress on the lead, improves the severe stress environment on the contact area of the lead and the spacer, prevents the lead from destructive vibration and fatigue and keeps the lead in a safe distance.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

In the figure: 1. a support frame; 11. a support plate; 12. a connecting member; 2. wire clamps; 21. a wire frame; 22. a positioning frame; 23. a semicircular ring; 24. a fixed block; 25. a screw; 3. pre-twisting silk.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure, and in order to keep the following description of the embodiments of the present disclosure clear and concise, detailed descriptions of known functions and known parts of the disclosure are omitted to avoid unnecessarily obscuring the concepts of the present disclosure.

Referring to fig. 1, the preformed spacer comprises a supporting frame 1, two wire clamps 2 and preformed wires 3, wherein the supporting frame 1 is composed of two supporting plate members 11 and a connecting member 12, the connecting member 12 is located between the two supporting plate members 11, the supporting plate members 11 and the connecting member 12 are connected through bolts, and the two wire clamps 2 are respectively installed at two ends of the supporting frame 1;

fastener 2 includes line frame 21, locating rack 22, semicircle ring 23, fixed block 24 and screw rod 25, locating rack 22 passes through the bolt and installs on braced frame 1, semicircle ring 23 sets up two and installs the one end of line frame 21 and fixed block 24 respectively, and is articulated between two semicircle rings 23, screw rod 25 is installed on line frame 21 and is connected with fixed block 24, and all installs locating rack 22 between line frame 21 and fixed block 24 and the semicircle ring 23 above it, preformed armor rod 3 passes locating rack 22 and twines on the cable.

The inboard of semicircle ring 23 is equipped with the wearing layer, avoids semicircle ring 23 and cable to take place the friction, causes the influence to the performance of cable.

Preformed armor rods 3 adopt aluminium or aluminium-clad steel materials, braced frame 1 and fastener 2 all adopt high-quality aluminum alloy to make, so make the conductor spacer have stronger mechanical properties.

The circle formed by the two semicircular rings 23 on the wire clamp 2 is slightly larger than the diameter of a cable, so that the wire clamp 2 is prevented from clamping the cable, the wire clamp 2 only has the suspension effect, and the pre-twisted wire 3 is matched to complete installation, so that the wire clamp 2 cannot fall off.

Threaded holes are formed in the wire frame 21 and the fixing block 24, and the screw rod 25 is connected with the threaded hole in the fixing block 24 through the threaded hole in the wire frame 21, so that the wire clamp 2 can be conveniently opened and closed, and installation is facilitated.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.

Claims

1. The utility model provides a preformed helical conductor spacer which characterized in that: comprises a supporting frame (1), a wire clamp (2) and a preformed armor rod (3);

the supporting frame (1) consists of two supporting plate pieces (11) and a connecting piece (12), the connecting piece (12) is positioned between the two supporting plate pieces (11), and the supporting plate pieces (11) are connected with the connecting piece (12) through bolts;

the two wire clamps (2) are arranged and are respectively installed at two ends of the supporting frame (1);

the wire clamp (2) comprises a wire frame (21), a positioning frame (22), a semicircular ring (23), a fixing block (24) and a screw rod (25);

locating rack (22) are installed on braced frame (1) through the bolt, semicircle ring (23) set up two and install the one end of line frame (21) and fixed block (24) respectively, and be articulated between two semicircle rings (23), screw rod (25) are installed on line frame (21) and are connected with fixed block (24), and all install locating rack (22) between line frame (21) and fixed block (24) and semicircle ring (23) above them, preformed armor rod (3) pass locating rack (22) and twine on the cable.

2. A pre-twisted spacer as claimed in claim 1 wherein: and the inner side of the semicircular ring (23) is provided with a wear-resistant layer.

3. A pre-twisted spacer as claimed in claim 1 wherein: the preformed armor rods (3) are made of aluminum or aluminum-clad steel.

4. A pre-twisted spacer as claimed in claim 1 wherein: the supporting frame (1) and the wire clamp (2) are both made of high-quality aluminum alloy.

5. A pre-twisted spacer as claimed in claim 1 wherein: the circle formed by the two semicircular rings (23) on the wire clamp (2) is slightly larger than the diameter of the cable.

6. A pre-twisted spacer as claimed in claim 1 wherein: threaded holes are formed in the wire frame (21) and the fixing block (24), and the screw rod (25) is connected with the threaded hole in the fixing block (24) through the threaded hole in the wire frame (21).