JPH0446051B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a construction method for changing the installation of high-voltage distribution lines or the like in support of utility poles to a double-bracing method, and a tool used in this construction method.

(Prior Art) Most of the double anchor points in high-voltage distribution lines are curved sections with heavy angles, and straight sections and curved sections with a small curvature are almost all supported through-the-line.

On the other hand, with the recent spread of electronic devices and the popularization of various electrical products controlled by microcomputers, there is a need to avoid work power outages as much as possible during distribution line construction.
For this reason, a bypass method is being adopted. In this bypass construction method, both ends of the bypass line are connected to distribution lines at both ends of the construction section, and power is supplied to each customer via the bypass line.

However, when connecting this bypass line to the high-voltage distribution line, it takes time and effort to connect at the above-mentioned lead-in points, making it an extremely complicated operation.

Therefore, we have set the wire entry points of these distribution lines to both designated sections in advance, so that when bypass construction is carried out,
It is desired to be able to easily connect a bypass line by removing the connecting portions of the jumper wires of both stays.

(Problem to be Solved by the Invention) However, changing an existing lead-in point to a double-branched stop is extremely time-consuming and complicated work, and there is no simple construction method for the change work.

(Means for Solving the Problems) Therefore, the present invention aims to solve the above problems by providing a construction method for extremely easily changing the lead-through point to a double stop, and a tool used therefor.

That is, the first aspect of the present invention is to support a gate-shaped frame above each of the electric wires of a utility pole through which each electric wire is supported by an insulator provided on an arm; A slide arm that can be slid horizontally is supported, and each electric wire that has been removed from the insulator is lifted up by the hook at the lower end of the rope hanging from this slide arm and supported by these slide arms, and in this state, the slide arm is held horizontally. Move each electric wire to the desired position by sliding it in the direction, replace the above-mentioned arms of the utility pole with both restraining arms, and secure the front and rear of each electric wire from both restraining arms or the front and rear directions of the utility pole. This is a double-bracing modification method in which the wires are held in place by insulators, etc., each wire is cut at the held-down ends, and jumper wires are connected to the cut ends of these wires via connectors. In addition, in the second invention, a support body is fixed by passing it between the upper parts of two main pillars arranged at an interval, and this support body has a substantially box-shaped frame with openings on both sides, and penetrating both sides of this support body. A slide arm is provided that is slidably supported, and this slide arm is supported by four-sided rollers in the support body, and a plurality of rollers are provided at intervals in the longitudinal direction of the side surface of this slide arm, and the slide arm is supported by four-sided rollers in the support body. This is a tool used in the double-tension alteration method, in which a plurality of locking parts are provided at appropriate locations on the slide arm, and fixtures for fixing utility poles are provided at the bottom of the two main pillars.

(Function) The slide arm supported on the support of the gate-shaped frame can be slid horizontally with respect to the support, and each electric wire can be lifted up and the slide arm can be slid horizontally while supporting these.
As a result, the position of the electric wire in the case of continuous support can be changed to a position suitable for double-end support, and there is no need to take the trouble of changing the position of the utility pole.

Additionally, the slide arm of the portal frame is supported by four-sided rollers on both sides of the support, allowing it to slide smoothly. The plurality of locking parts on the support body and the slide arm are used to lock the hooks of the wire tensioner, and the rollers are used to wrap a strap, etc. with a hook at the tip when lifting the wire with the slide arm. , which allows for smooth lifting.

(Example) Examples of the present invention will be described below with reference to the drawings.
Figure 1 shows the characteristic parts of the construction method of this invention.
Figures 1 to 10 are explanatory diagrams showing the procedure of this construction method.

Figure 2 shows how the wires are passed through.A high-voltage wire 4 is passed through and supported by each insulator 3 provided on the cross arm 2 of the utility pole 1, and at the top of the utility pole 1 is a ground wire with a grounding wire 5 supported. A cap 6 is supported. First, when changing both terminals, a construction switch 7 is installed at the bottom of the utility pole, and although not shown, insulating covers are placed on the arm ties that support the high-voltage wires 4 and arms 2 at the front and rear of the utility pole 1. Then, each end of the cable 8 led out from the construction switch 7 is connected to the power supply side and the load side of the high voltage line 4, thereby connecting the power supply side cable 8, the construction switch 7, and the load side cable 8. and current flows. Next, the gate-shaped frame 9 is attached to the six ground wire caps of the utility pole 1. A slide arm 11 that is horizontally slidable is supported on the support body 10 at the top of the gate-shaped frame 9, and rollers 1 are attached to both side ends and the center of the slide arm 11, respectively.
2 is rotatably provided, and a side eye ring 13 is fixed to one end of the side surface and a center portion, respectively, and a lower eye ring 14 is fixed to each end of the lower surface. Further, on the upper surface of the support body 10, a U ring 1 is provided.
5 is also provided with a locking pin 16 on one side of the lower surface. First, as shown in FIG. 5, in order to fix the slide arm 11, one hook of the wire tensioner 17 is attached to the locking pin 16 of the support 10, and the other hook is attached to the slide arm 11 in FIG.
are respectively locked to the lower eye ring 14 at the right end. Also, one hook of the separate wire tensioner 18 is locked to the side eye ring 13 in the central part, and the other hook is locked to a strap 20 having a hook 19 at the tip, and this strap 20 is connected to the roller at the right end in FIG. A hook 19 is hung from the hook 12, and an endless rope 21 is provided on the hook 19. Then, remove the high voltage line 4 from the insulator 3 at the right end in FIG. , the endless rope 21 is hooked onto the roller 12 as shown in FIG. In this way, each high voltage wire 4 is attached to each hook 19 in the same manner for the other high voltage wires 4 at the left end and center portion shown in FIG.
An endless rope 21 provided on each hook 19 is hung on each roller 12 of the slide arm 11, and each high voltage line 4 is lifted up by the slide arm 11 as shown in FIG. FIG. 6 shows the position of the wire tensioner 18 when lifting the high voltage wire 4 at the left end, and FIG. 7 shows the position of the wire tensioners 17 and 18 when lifting the high voltage wire 4 at the center. Then, as shown in FIG. 1, move the wire tensioner 17 and slide arm 11.
slide to adjust the position of each high voltage line 4.
At the same time, the arm 2 is removed from the utility pole 1, and the two restraining arms 22 are fixed to the front and rear surfaces of the utility pole 1.
As shown in FIG.
5 are connected in series, and grippers 26 are attached to the high-voltage wires 4 in front and rear of the utility pole 1, and each of these grippers 2
A wire tensioner 27 is provided between the wire tensioner 6 and each tension clamp 25, and the wire tensioner 18 is operated to tighten the hook 1.
9 and lowering the high voltage wire 4, each wire tensioner 2
Operate 7 to tie the high voltage line 4. As a result, the high-voltage line 4 is secured to each restraining arm 22 at the front and rear of the utility pole 1. Therefore, as shown in FIG. 9, the high voltage wire 4 is cut at each of the retaining ends, and each of the cut ends is covered with an end cover 28 and held by each tension clamp 25. Thereafter, the above-mentioned gripper 26 and wire tensioner 27 are removed, and the jumper wire 29 is connected between the four ends of these high-voltage wires held before and after the utility pole 1, and the jumper wire 29 is connected to each of the above-mentioned tension clamps 25 and jumper wires 29 and each high-voltage wire. Covers 30 are respectively placed over the connection parts with the ends of the wires 4, and the central part of the jumper wire 29 is supported by an insulator 31 provided on one of the retaining arms 22. This completes the support of both ends of the high voltage line 4 as shown in FIG.

Next, the gate-shaped frame 9, support body 10, and slide arm 11 used in the above construction method will be described in detail.

The gate-shaped frame 9 has two main pillars 35 arranged at intervals, a support 10 is fixed across the upper part of these two main pillars 35, and a support body 10 is fixed to the central part of each main pillar 35 on opposing surfaces. An upper utility pole mounting bracket 36 is fixed thereto, and a lower utility pole mounting bracket 37 is attached to the opposing surfaces of the lower end of each main pole 35.

Each of these lower utility pole mounting brackets 37 is fitted into a square hole passing through its upper and lower surfaces from the lower end of each main pole 35. A stopper 38 is provided on the side surface of each main pole 35, which allows each lower utility pole mounting bracket 37
is locked to each main pillar 35. Each of the upper utility pole attachment fittings 36 and the lower utility pole attachment fittings 37 has a utility pole tightening band insertion hole 39 on the side surface thereof. The support body 10 is approximately box-shaped, having an opening/closing door 41 on the front side of a U-shaped frame body 40 with both sides and the entire surface open. It is bolted to the top of each main pillar 35. The opening/closing door 41 is supported by the upper and lower ends of two rotating shafts 43 that are pivotally supported on the lower front end of the U-shaped frame body 40, and the upper ends of these rotating shafts 43 are connected to the upper front end of the U-shaped frame body 40. The opening/closing door 41 is attached to the U-shaped frame body 40 so as to be openable and closable. Furthermore, four-sided rollers 46 are provided on both sides of the support body 10, and the front vertical roller 46 of each four-sided roller 46 is
a indicates each rotating shaft 43 on the back side of the opening/closing door 41;
It is provided on the outer periphery of the . Further, the U ring 15 is provided on the front edge of the upper surface of the U-shaped frame body 40, and the locking pin 1
6 is provided in a groove of a downward channel frame 47 protruding from the lower surface of the U-shaped frame 40 to one side.

The slide arm 11 is supported by passing through both sides of the support body 10, and is supported by passing through each of the four-sided rollers 46 on both sides of the support body 10. When installing the slide arm 11, loosen the wing nut 45 to open the door 41, place the slide arm 11 inside each four-sided roller 46 on both sides, close the door 41, tighten the wing nut 45, and open the door 41. is fixed in the closed position. The configuration of this slide arm 11 is as described above.

Figure 14 shows hook 1 used in the above construction method.
9 shows a perspective view of the strap 20 and the endless rope 21.

(Effects of the Invention) The present invention has the above-described configuration, and the first invention is to support a gate-shaped frame on the utility pole, and to attach a slide arm to the gate-shaped frame, in order to change the lead-through of electric wires in support of the utility pole to a double-detention method. It is possible to suspend each electric wire on this slide arm, and in this state, slide the slide arm in the horizontal direction to move each electric wire to a desired position. Therefore, the position of the electric wire can be easily changed to a position suitable for supporting both terminals, and there is no need to change the position of the utility pole. In addition, with each electric wire suspended on the slide arm, the positions of the arm for pulling it through and the arm for holding both ends can be selected. In this way, all construction methods are simplified and workability is extremely high.

Further, in the second aspect of the present invention, the slide arm is supported by four-sided rollers on both sides within the support body in the gate-shaped frame, so that the slide arm is stably supported and at the same time can smoothly slide relative to the support body.
In addition, the slide arm and the support body have a plurality of locking parts so that the hooks of the wire tensioner can be easily locked, and rollers are provided on the sides of the slide arm to suspend each electric wire. When the strap with the hook is pulled up by the above-mentioned wire tensioner, it is constructed so that it can be easily pulled up by hooking on this roller.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a state in which the slide arm is slid with each electric wire suspended on the slide arm in the construction method of this invention, Fig. 2 is a perspective view showing a state in which the electric wire is drawn through using this invention, and Fig. 3 Figures 10 through 10 are explanatory diagrams showing the procedure of the construction method of this invention, Figure 11 is a plan view of the gate-shaped frame used in the construction method of this invention, Figure 12 is a front view of the same, and Figure 13 is the same as the one shown in Figure 11. A cross-sectional view taken along line A-A in
Figure 4 shows a perspective view of the hook, strap, and endless rope used in the construction method of this invention. In the figure, 1 is a utility pole, 2 is an armrest, 4 is a high-voltage line, and 6
1 is a ground wire cap, 9 is a portal frame, 10 is a support, 11 is a slide arm, 12 is a roller, 1
7, 18, 27 are wire tensioners, 19 is a hook, 2
0 is strap, 21 is endless rope, 22
is a restraining arm, 25 is a tension clamp, 26 is a gripping tool, 29 is a jumper wire, 35 is a main column, 40 is a U-shaped frame body, 41 is an opening/closing door, 43 is a rotating shaft,
46 is a four-sided roller.

Claims (1)

[Scope of Claims] 1. A gate-shaped frame is supported above each of the electric wires of a utility pole through which each electric wire is supported by an insulator provided on a cross arm, and a gate-shaped frame is supported horizontally on the support of the gate-shaped frame. A slide arm is supported, each of the electric wires is removed from the insulator and lifted by this slide arm, and this slide arm is slid horizontally to move each electric wire to a desired position, and the above-mentioned arms of the telephone pole are attached to both restraining arms. Replace the wires with gold, hold down the front and rear of each wire with tension insulators, etc. from the front and rear directions of both restraining arms or the telephone pole, cut each wire, and connect jumper wires between the cut ends of each wire. This method is characterized by the following: 2 A support is fixed across the tops of two main pillars lined up at an interval, and this support has a substantially box-shaped frame with openings on both sides, and a structure that slides through both sides of the support. A freely supported slide arm is provided, and this slide arm is supported by four-sided rollers in the support body, and a plurality of rollers are provided at intervals in the longitudinal direction of the side surface of this slide arm, and the support body and slide arm are provided with an appropriate number of rollers. A double-tension changing tool, characterized in that a plurality of locking parts are provided at the locations, and a fixture for fixing the utility pole is provided at the bottom of the two main pillars.