JPH0130807Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a metal wheel used in overhead power line replacement work.

The conventional method for replacing overhead power lines is to install a new line under the existing line (old line) that is strung between steel towers, reverse the position, and remove the old line that has descended with the new line on top. There are methods such as connecting the new line to one side of the old line and pulling out the old line.

This invention relates to the metal wheel used in the latter method of pulling out old lines.

In the conventional method of pulling out overhead power lines, a self-propelled machine is attached to the existing line, a metal wheel is suspended from the existing line following the self-propelled machine, and the metal car is pulled at a fixed interval by two ropes using the self-propelled machine. Tow the line, place metal wheels at regular intervals between the steel towers, tighten the towing rope, weaken the force of the existing line so that it is supported by each metal wheel, and connect the new line to the end of the existing line. The existing line was pulled out by passing it over the metal wheel, but since the metal car used at this time was suspended from the existing line and pulled by a self-propelled machine using two towing ropes, the rope connection was difficult. The metal wheel gets twisted in some places, making it difficult for the rope to pass through, which causes many troubles, and the wheel also rotates due to the wind. He developed this invented gold wheel located at the bottom of the car.

This idea uses a multi-wheel metal wheel with a large number of rollers, and the metal wheels are arranged in a ring shape so that the inner angle of the metal wheel is close to a circle, so that the wire can be pulled out smoothly no matter where it hits when pulling out the wire. The shaft of the metal wheel provided in an annular shape is a hollow shaft, and the shaft of the adjacent metal wheel is connected to the shaft of the adjacent metal wheel at the bearing part to form a hollow ring shape, and the balance weight ball can be freely rotated within the hollow annular shaft. It was sealed so that the center of gravity could be moved to prevent the metal wheel from rotating due to the wind. Furthermore, since the towing rope is made into a single thread, to prevent the metal wheel from swinging, the towing rope stoppers are clamped at right angles to the direction of the annular roller by a considerable length from above and below. In addition, when a part of the ring-shaped metal wheel is opened and closed to allow electric wires, ground wires, etc. to enter and exit, a stopper mechanism is provided on a part of the hollow annular shaft to prevent the balance weight ball from falling off. .

One embodiment of this invention will be described with reference to the drawings. A straight hollow roller shaft 1a is bent within bearings at both ends and connected to adjacent roller shafts 1b and 1f to form six hollow roller shafts 1a, 1b, 1.
c, 1d, 1e, 1f are connected to six bearings 2a, 2b,
Hollow roller shafts 1a, 1b, 1c, 1d, 1e, 1f
rollers 3a, 3c, 3c, 3d, 3e, 3f
are installed rotatably, and only roller 3f is
The bearings 2f and 2a are split into two, and are opened by rotating around the roller shaft 1f by means of a hinge 4 provided at the outer end of the bearing 1a. At this time, bearing 2
A thin groove 27 reaching from the outside to the vicinity of the end of the hollow roller shafts 1e and 1a is provided in the unmovable part of the split portion a and 2f, and a stopper 26 is inserted into the thin groove 27 when opening and closing the roller 3f.
Annular hollow roller shafts 1a, 1b, 1c, 1d, 1
The balance weight balls 15 enclosed in e and 1f are prevented from falling out. Also hinge 4
Attach the frame 5 between a part of the bearing 2b and the hook,
To facilitate the installation of chains, etc., an inner frame 6 is provided on the outside between the bearings 2d and 2e, and a hinge 7 is provided on the bearing 2d side of the inner frame 6 to allow the outer frame 8 to be opened and closed.
The other end is removably attached to the end of the inner frame 6 on the side of the bearing 2e with a thumbscrew 9, and hollow roller shafts 1a, 1 are provided at the center of the inner frame 6 and the center of the outer frame 8.
The upper part 10 and lower part 10' of the towing rope stopper are perpendicular to the annular directions of b, 1c, 1d, 1e, and 1f, and are curved upwardly and downwardly so as to hold the rope from above and below at a constant length. ing. In addition, the balance weight balls 15 are always connected to each hollow linear shaft 1a,
Among 1b, 1c, 1d, 1e, and 1f, due to their weight, they are positioned within the hollow linear shaft 1 at the lowest end.

Since this idea has the above structure, the center of gravity is always at the bottom, so there is no rotation.
Moreover, since the towing rope stopper fittings are provided with a certain length in a direction perpendicular to the rollers 3a, 3b, 3c, 3d, 3e, and 3f, which are provided in an annular shape, even when the towing rope is clamped, the so-called neck There is no such thing as shaking things up.

The gold wheel 11 of this invention was used to connect the old line 1 between the steel towers.
2, the self-propelled machine 13 is set on the old line 12, and the gold wheels 11 are suspended from the old line at intervals of 10 to 20 m. At this time, open the roller 3f with the hinge 4 and connect the old wire 12 to the annular rollers 3a, 3b, 3c, 3
d, 3e, and close 3f. In this way, several gold wheels 11, 11, 11, . . . were placed on the old line 12.
Towing rope stopper 1 for each metal wheel 11
It is towed by a self-propelled machine 13 with an aramid fiber towing rope 14 clamped from above and below at 0,10'. In this case, the roller 3a of the metal wheel 11 is placed on the old line 12, and the towing rope 14 is placed on the rope stopper 10, 1 between the inner frame 6 and outer frame 8 below the roller 3d.
0', and the balance weight ball 15 is located within the axis 1d of the roller 3d (see FIG. 3). The gold wheel 11 was pulled by the self-propelled machine 13 to the old line 1 between the steel towers.
2, the towing rope 14 is tensioned.
In this case, as the towing rope 14 rises, the metal wheel 11 and the towing rope stopper also rise, so the metal wheel 11
1 rotates so that the roller 3e is placed on the old line 12 and the towing rope 14 is placed diagonally above the roller 3d. Further, the balance weight ball 15 is placed inside the hollow shaft 1b of the roller 3b which is at the lowest end (see FIG. 4). Next, gradually loosen the old line 12, and the gold wheel 1
1 rotates further, and the towing rope 14 becomes the upper end, and the roller 3d is located directly below the rope stoppers 10, 10', and the old wire 12 is placed on the roller 3a by the rotation of the metal wheel 11. become. At the same time, the balance weight ball 15 comes into the hollow shaft 1a of the roller 3a which is at the lowest end (see FIG. 5).
After the loosening of the old line 12 is completed, the new line 16 is connected to one end of the old line 12, and the new line 16 is extended using the metal wheel 11 while winding up the old line 12 at the other end (see Figure 6). ). After the extension of new line 16 is completed, new line 16 will be tensioned under specified tension. Then, the tension on the new line 16 causes the new line 16 to rise, causing the metal wheel 11 to rotate.
The roller 3a becomes the uppermost part and is supported by the new wire 16, the balance weight ball 15 comes to be in the hollow linear shaft 1d of the lowest roller 3d, and the towing rope stoppers 10 and 10' are placed under the roller 3d. (See Figure 7). Next, a self-propelled machine 13 is attached to the front end of the towing rope 14, and the gold wheel 11 is recovered under appropriate braking conditions (see FIG. 8).

As mentioned above, even when the metal wheel 11 is inverted, the direction of the center of gravity is always constant due to the movable balance weight ball 15. It is possible to prevent the car from shaking. Therefore, it is easier to pull than the conventional gold wheel, which is pulled by two ropes, and there is no problem such as swinging of the head, so it can be used on the old line 12.
can be extracted.

Next, when using this metal wheel 11 for power line re-stretching, if the three wires of the upper wire 12a, middle wire 12b, and lower wire 12c are stretched, the self-propelled machine 11 will be placed on the upper wire 12a.
3, upper line 12a, middle line 12b, underline 12
The metal wheels 11 are suspended from each at regular intervals on the upper line 12a.
From the gold wheel 11 on the middle line 12b to the gold wheel 11 on the middle line 12b
The gold wheel b is connected to the metal wheel 11 underlined 12c using the frame body 5 and outer frame 8 of the metal wheel 11 with a metal wheel cord 17 made of nylon rope, and the metal wheel 11 indicated by the upper line 12a is connected from the self-propelled machine 13 to the metal wheel 11 underlined 12c. One strip of towing rope 14
A tow rope 14b is set on the metal wheel 11 indicated by the underline 12c (see FIG. 9). A set of metal wheels placed on each of the upper, middle, and lower lines 12a, b, and c is towed by a self-propelled machine 13 and placed between the steel towers (see FIG. 10). (The following line breaks are not shown)
Next, the towing ropes 14 placed on the upper line 12a and the lower line 12c are temporarily raised. In this case, the towing rope 14 and the old line 12 are approximately parallel to each other, so the metal wheel 11 indicated by the upper line 12a and the lower line 12c rotates, and the old line 12 comes to the side of the roller 3e, and the towing rope 12 is placed on the outside of the roller 3d. The rope stoppers 10 and 10' are diagonally upward, and the balance weight ball 15 is attached to the bearing 2b.
It comes to come inside. Next, upper line 12a, underline 1
Gradually loosen the tension on 2c, upper line 12a, underline 12
Connect the new line to the end of c and pull out the old lines 12, 12, respectively. Therefore, since each metal wheel 11 hanging on the middle line 12b is suspended from each metal wheel 11 on the upper line 16a (old line 12a) by a metal wheel cord 17, the tension on the old line 12b is relaxed. Connect the new line to one end, pull it out, and replace it with the new line. Next, the new line 16 is connected from the lower line 16c to the middle line 16b and the upper line 16a.

Next, the self-propelled machine 13 is left behind and the gold wheel 11 is recovered.

In the case of a new overhead line, the small diameter nylon rope 18 is stretched by hand while avoiding crossing objects between the steel towers. After the wire has been extended, temporary raising will be performed (see Figure 11). Next, pull out the small-diameter nylon rope to the two large-diameter nylon ropes 19 while being careful not to cross the rope (see Figure 12), temporarily fix one of the two large-diameter nylon ropes 19a,
The towing rope 14 and the metal wheel 11 are connected to the large diameter nylon rope 19 using another large diameter nylon rope 19b.
The metal wheel 11 and towing rope 14 are hung on a and pulled.
(See Figure 13). Next, tow rope 1
4, loosen the large diameter nylon rope 19a, pull it out to the small diameter wire 20, and then tighten the small diameter wire 2.
0 to new line 16 (see Figure 14). Next, the new line 16 is tensioned, the towing rope 14 is loosened, and then the metal wheel 11 is connected to the upper and lower parts of the metal wheel with a metal wheel cord 17, and a large diameter nylon rope 19 is attached to the lower metal wheel.
Collect the gold wheel 11 on the new line 16 while towing the suspended object in the opposite direction with the towing rope 14 (first
(See Figure 5). After the metal wheel group is placed between the steel towers, the towing rope 14 that has been used to tow the lower metal wheel 11 is temporarily raised to secure the metal wheel group. At this time, the gold wheel cord 17 becomes loose. Thick diameter nylon rope 1 of lower gold wheel 11
9 is replaced with a wire extension wire 22, an electric wire 23 is attached to the end of the extension wire 22, and the wire is extended (see FIG. 16). In this case, the metal wheel 11 supports the load of the electric wire 23
A load is applied to the towing rope stoppers 10, 10', and the electric wire 23 is supported by the roller 1a. The new line 16 at the top and the electric wire 23 of the middle line are temporarily raised, the upper and lower towing ropes 14, 14 are loosened, and the gold wheel group is recovered. At the same time, the electric wire 23 is temporarily raised, and the suspended gold wheel set is removed. 21b, a towing rope 14 is fixed to the lower side of the metal wheel 11 suspended from the electric wire 23 with a towing rope stopper 10, and a lower metal wheel 11 is suspended below the metal wheel 11 with a metal wheel cord 17. A large diameter nylon rope 19 is inside the roller 1 and is pulled together with the upper metal wheel 11 by a separate towing rope 14 (see FIG. 17). In this way, a group of metal wheels is arranged below the electric wire 23. In this state, the ground wire 16 is stretched independently between the steel towers, metal wheels 11 are placed on the wire 23 at regular intervals, and the towing rope 14 is attached to the towing rope stoppers 10 and 10' under the metal wheel 11. Attached, the gold wheel code 17 is attached downward from each gold wheel 11.
Each gold wheel 11 on the lower side is suspended. Therefore, the lower metal wheel towing rope 14 is temporarily raised to fix the entire metal wheel set 21b. Towing rope stopper 1
The lower metal wheel 11 with 0 and 10' on top has a large diameter nylon rope 19 placed inside the annular roller 3. Next, the large-diameter nylon rope 19 is replaced with a wire extension wire 22, and a central electric wire 23b is connected to the rear end of the extension wire 22 for extension (see FIG. 18). Next, temporarily raise the Chubu Electric Cable 23b, loosen the towing rope 14, collect the metal wheel group, and place the underlined metal wheel group on the Chubu Electric Cable 23b.
Stretch the lower wire in the same way as above and collect the gold wheel set.

It is expected that repair work such as wire re-strapping will increase in the future for multi-conductor lines, so conventional hanging wheels are difficult to use on multi-conductor lines due to their structure. Therefore, the metal wheel of this invention is connected by a support 24 for fixing the metal wheel. The annular protrusion of the bearing 2f is used to attach the metal wheel 11 to the support 24 for fixing the metal wheel. 10'' is the towing rope attachment part of the metal wheel fixing support 24. In addition, in the case of four conductors, a quadrilateral metal wheel fixing support 26 for four conductors is used; The upper and lower towing rope attachment parts 10'' can be created by attaching the upper and lower supports 24.
This is done by attaching two towing ropes 14, 14 to 0'' and 10''. The method of use will be the same as for power line replacement and newly installed overhead lines.

The gold wheel of this invention is used as described above,
The metal wheel of this invention uses (a) MC nylon, which is lightweight, strong, and does not damage electric wires. (b) It is a multi-wheel metal wheel, and since it has many rollers, the inner angle of the metal wheel is close to a circle, and when the wire is pulled out, it is smooth against the wire in a spiral state. (c) Since the center of gravity is movable (the balance weight ball moves within the connecting path of the roller shaft), it is not affected by the rotation of the metal wheel due to wind. (d) Since only one rope is used, there is no tangle with other ropes, and the long reach of the towing rope stopper prevents phenomena such as swinging. (E) The stopper structure prevents the balance weight ball from falling when the opening is opened. (F) Since it has a connected structure, it can be applied to multiple conductors. With these effects, it is possible to efficiently rewire power lines, construct new lines, etc.

[Brief explanation of the drawing]

Figure 1 is a front view of this invention, Figure 2 is a side view of the towing rope stopper of this invention, and Figure 3 shows this invention's metal wheel being towed by a self-propelled machine when replacing old lines. Front view and direction of the golden wheel of this invention, No. 4
The figure shows a front view of the metal wheel of this invention having been placed on the old line between the steel towers and the towing rope temporarily raised, and a front view showing the rotating direction of this metal wheel. Figure 5 is a continuation of Figure 4 and shows the old line. Fig. 6 is a front view showing the rotated direction of the metal wheel of this invention, and a front view showing the rotated direction of the metal wheel of this invention. Figure 7 is a front view following Figure 6 showing the new line tensioned and the direction in which the gold wheel of this invention has been rotated. Figure 8 is a front view following Figure 7 and showing the rear end of the towing rope. Figure 9 shows a front view showing the orientation of the metal wheel of this invention with a self-propelled machine attached to it and a front view showing the direction of the gold wheel of this invention. A front view showing a state in which gold wheels are suspended from the upper, middle, and lower lines and connected by a metal wheel cord to be towed as a group of metal wheels, and a front view showing the orientation of the metal wheels of this invention at that time, Figure 10 is a front view of the top, middle, and underlined gold wheels following Figure 9.
Figure 1 is a front view showing the hand-stretching of the nylon robe in the case of a newly installed overhead line, Figure 12 is a front view showing how the nylon robe in Figure 11 is turned into two large-diameter nylon ropes and pulled out, and Figure 13 is the Following Figure 12, one of the large-diameter nylon ropes is temporarily fixed, and the other large-diameter nylon rope is used to tow and arrange the gold wheel of this invention. Figure 14 is a temporary fixing following Figure 13. The gold wheel of this invention is placed on the nylon robe,
A front view showing the part where the towing rope is temporarily raised, the large diameter nylon rope temporarily fastened is loosened, the large diameter nylon rope is pulled out to the small diameter nylon rope, and then pulled out to the ground wire. Figure 15 is a continuation of Figure 14. A front view showing the state in which the ground wire is tensioned, the towing rope is loosened, and a large diameter nylon rope is attached to the bottom of the gold wheel set with two towing ropes attached above and below in the opposite direction. A front view of temporarily raising the towing rope attached to the metal wheel on the lower side of the vehicle group and replacing the large-diameter nylon rope with a wire extension wire. Figure 17 shows the collection of the metal wheel set from the upper track. At the same time, the front view shows that the metal wheel set for the middle line is being placed, and Figure 18 shows the middle line metal wheel set being placed, replacing the thick diameter nylon rope with a stretched wire, and then extending the medium line electric wire. Figure 19 is a front view showing how the metal wheel of this invention is used on two conductor lines, and Figure 20 shows how the metal wheel of this invention is used on four conductor lines. It is a front view. In the figure, 1...roller shaft, 2...bearing, 3...
Roller, 4...hinge, 5...frame body, 6...inner frame, 7...hinge, 8...outer frame, 9...thumb screw,
10... Rope stopper, 11... Gold wheel, 12...
...Old line, 13... Self-propelled aircraft, 14... Towing rope,
15...Balance weight ball, 16...New line, 1
7... Gold wheel cord, 18... Small diameter nylon rope, 19... Large diameter nylon rope, 20... Small diameter wire, 22... Extended wire, 23... Electric wire, 24... Support for fixing the metal wheel, 25 ... Support for fixing the metal wheel for four conductors, 26 ... Stopper,
27... Thin groove.

Claims (1)

[Scope of utility model registration request] Several hollow linear shafts of a certain length are connected in a ring by changing their directions within bearings provided at both ends, and a balance weight ball that rotates within the connected hollow annular shafts is enclosed, and the weight of each hollow linear shaft is changed. A roller is rotatably fitted between the bearings, and several rollers are arranged in an annular shape, and a towing rope of a certain length is held perpendicular to the annular direction of the rollers in a frame body that straddles the outside of the rollers between adjacent bearings. A ring-shaped metal wheel with a stopper for fastening.