JPH0333135Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) The invention of the present application is used for power transmission line extension work, and is particularly used for optical fiber composite overhead ground wires (hereinafter referred to as
This relates to support wire support fittings used when replacing old ground wires (referred to as OPGW) with old ground wires.

(Prior art) As shown in Figures 5 and 6, the conventional similar type is simply a round roller as a horizontal roller at the bottom of a guide frame that surrounds a U-shaped metal fitting provided at the bottom of the attachment to the steel tower. It was equipped with rod-shaped rollers. However, during OPGW relining work, the support lines of each steel tower are supported, and when the carrier that has moved on the support line passes, the role played by the horizontal rollers is simply to prevent the OPGW held in the carrier from hanging down and causing the tower to fall. It was enough to prevent contact with the body, etc.

(Problems that the invention aims to solve) However, there are height differences in the power transmission line in the extension span, and there are also left and right angles (horizontal angles), and the support points of each steel tower hang down between the towers. Since this is the apex of the support line, the carrier is pulled up the slope by the connecting rope and reaches the intermediate support bracket at the apex, and then immediately slopes down, so the connecting rope between the carriers is the fourth one. As shown in the figure, it is on the line connecting the shortest distance, and there is a difference between the pulling direction and the moving direction of the carrier, and it goes without saying that smooth passage cannot be achieved, and unreasonable pulling force is applied to the connecting rope. There was a possibility that it would be cut or the carrier could be destroyed. Therefore, in the present invention, the above-mentioned problem is solved by configuring the traveling direction of the carrier when passing the support point of the support line, that is, the tensioning direction of the support line, and the pulling direction of the connecting rope to be approximately parallel to each other. It is something.

(Means for solving the problem) At the support line support point of the steel tower, the support line W and
In order to make the connecting rope R of the carrier B that holds and transports the OPGW parallel, a connecting rope supporter 5 is installed between each U-shaped bottom of the two U-shaped frames 54 in the same way as the supporting device 4 of the support line W. The support line supporter 4 and the connecting rope supporter 5 are vertically parallel to each other. Therefore, the support line W and the connecting rope R are necessarily supported in parallel within the intermediate support fitting HG.

(Example) The structure of the intermediate support fitting of the present application is as follows.

Two approximately U-shaped U-shaped metal fittings 2 are placed at the bottom of the attachment part 1 to the steel tower, which is made of a U-shackle or the like, with their U-shaped surfaces facing each other. A support frame 3 is provided in which one of the connecting members 21 is a hinge 22 and the other is a detachable engagement part 23, and a plurality of rollers 41 are provided between the bottoms of both U-shaped fittings 2 of the support frame 3. The support wire supports 4, which are fixed between roller side plates 42, 42 in series in the wire extension direction, are made to protrude in both directions to form a bridge. Further, at the upper part of both sides of the support frame 3, there are horizontal members 53 made of pipe material or the like.
are fixed and projected to both sides in the wire extension direction, and a large U-shaped frame 54 is fixed downwardly at both ends of each same side, and a large connecting rope similar to a support line supporter is fixed between the bottom of the U-shaped frame 54. The support 5 is bridged.

Therefore, the support frame 3 having the small U-shaped metal fitting 2 is surrounded by the connecting rope support frame 6 made up of the large U-shaped frame 54, the cross member 53, and the connecting rope supporter 5. Further, this connecting rope support frame 6 is fixed to the side surface of the internal support frame 3, and simultaneously follows the opening and closing of the engaging/disengaging portion 23 of the support frame 3.

The mounting part 1 of the present invention having the above structure is attached to the lower part of the cross arm of the steel tower with a wire rope or the like, and the engagement part 23 of the support frame 3 is opened to receive the support wire, and the attachment part 1 of the present invention is attached to the bottom of the U-shape of both U-shape fittings 2. The support wire is placed on the support wire supporter 4, the engaging/disengaging portion 23 is closed, and the support wire is supported. After performing this work on each tower, a group of carriers, which hold the OPGW in the lower guide body 7 of the carrier and are connected at predetermined intervals with connecting ropes, is pulled by a self-propelled machine or the like as shown in Figure 3. The roller 7 of the upper guide body 7
1, the connecting rope connected to the self-propelled machine, which has been removed and transferred onto the support line of the next span, is supported on the connecting rope supporter 5, When the self-propelled machine is further moved and the first carrier that pulls the group of carriers reaches the support metal fitting in this application, the U-shaped frame 54 is received in the fitting groove 81 of both rotary plates 8, 8 of the carrier, and it is pulled further. Possibly U
The U-shaped fitting 2 is inserted into the fitting groove 81, and as the roller 71 of the upper guide body 7 moves on the support line by being pulled, the rotary plates 8, 8 are removed from the U-shaped fitting 2. It escapes, passes through the next U-shaped fitting 2, and then the U-shaped frame 54, and exits to the next span. During this time, it passes through the center of both rotary plates 8, 8 of the carrier, and the upper and lower guide bodies 7, 7
A shaft 9 for slidably holding the rotary plate 8 between the rotating plates 8 and 8 moves between the support wire support 4 and the connecting rope support 5 in parallel with each support 4 and 5.
The U-shaped fitting 2 passes above the shaft 9 of the rotating plates 8, 8, and the U-shaped frame 54 passes below the shaft 9.

Subsequent carriers pass through each intermediate support in the same way, and after reaching the end of the line, both lines are reversed by loosening the tension on the support line at the upper position and increasing the tension on the OPGW at the lower position. Then, the group of carriers mounted on the OPGW in the upper position and holding the support line on the guide body 7 at the lower part crosses each intermediate support metal fitting and removes the support line in the same way as when extending the line. The line extension has been completed.

(Effect of the invention) As described above, by using the intermediate support fitting of the present invention, the connecting rope R of the carrier B is supported even in a position where the intermediate support metal fitting of the support line W hangs down on both sides, as shown in Fig. 3. By keeping it parallel to the line W, the towing direction and the traveling direction of the carrier B become the same direction,
Dispersion of the traction force can be prevented, and the connection rope R is positioned between the bases of the triangle with the support line support point at the apex, which would occur in the past, and the traction force is applied between the bases and is not applied in the direction in which the carrier should move. This also avoids accidents such as forcibly applying traction force to the connecting rope R, destroying the carrier B, or cutting the connecting rope R.

[Brief explanation of drawings]

Fig. 1 is a front view of the present invention, Fig. 2 is a right side view, Fig. 3 is a usage state diagram, Fig. 4 is an explanatory diagram of the usage state of the conventional product, Fig. 5 is a front view of the conventional product, and Fig. 6 The figure is a right side view. Symbols in the figure: 1...Mounting part, 21...Connection material,
2...U-shaped metal fitting, 22...hinge, 3...support frame,
23... Engaging/disengaging portion, 4... Support line supporter, 41, 5
1...Roller, 5...Connecting rope supporter, 4
2, 52... Roller side plate, 6... Connecting rope support frame, 53... Cross member, 7... Guide body, 54...
U-shaped frame, 8... Rotating plate, 71... Roller, 9...
...Shaft, 81...Inset groove, R...Connection rope, B...
...Carrier, HG...Intermediate support bracket, W...Support line.

Claims (1)

[Claims for Utility Model Registration] 1. At the bottom of the attachment part 1 to the steel tower, two approximately U-shaped U-shaped fittings 2 are placed with their U-shaped surfaces facing each other, and the upper ends are connected in series with connecting members 21 in the horizontal direction at predetermined intervals. The supporting frame 3 is constructed by connecting one connecting member 21 as a hinge 22 and the other as a detachable engaging part 23, and between both U-shaped fittings 2, 2 bottoms of the supporting frame 3, a plurality of In a support wire intermediate support metal fitting in which support wire supports 4, in which rollers 41 are fixed between roller side plates 42, 42 in series in the wire extension direction, are bridged by protruding in both directions, the support wire supports 4 are placed at a lower position. A support line intermediate support fitting characterized in that connecting rope supports 5 are provided almost in parallel. 2. The connecting rope supporter 5 has a structure in which a plurality of rollers 51 are arranged in series in the wire extension direction and fixed between roller side plates 52, 52, respectively, and are fixed to the upper part of both sides of the support frame 3 so as to protrude to both sides. horizontal member 5
3 and 53, both upper ends of the large U-shaped frame 54 are fixed between the same side ends of the U-shaped frame 54, and the U-shaped frame 54 is provided as a bridge between the U-shaped bottoms. Line intermediate support bracket.