JPH043529Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a metal wheel used to send out new lines during re-lining work of power distribution lines.

(Prior art) As a conventional gold wheel of this type, for example, the
There is one described in Publication No. 15447. This is the fourth
It is shown in Figure 5. FIG. 4 is a front view of the gold wheel, and FIG. 5 is a side view of the gold wheel. This gold wheel has two main frames 2
1 and 22, an upper roller 23 and two lower rollers 24 and 25 to form an outer shell, and a bolt 26 that passes through the upper part of each of the two main frames 21 and 22.
A spring 27 is inserted into the lower two rollers 2.
One end of the L-shaped support shaft 28 that supports the main frames 21 and 25 is fixed to the main frame 21, and the other end can be inserted and locked into the engagement hole 22a of the other main frame 22. , can be opened as shown by the imaginary line in order to insert one end of the support shaft 28 into the engagement hole 22a.

(Problems to be solved by the invention) In the conventional metal wheel mentioned above, since the main frames 21 and 22 can be opened, there is a relatively large play in each joint, and during movement, Main frame 2
1 and 22, the rollers 24 and 25 move in the axial direction, and the pull rope 29 falls between them, resulting in a situation where smooth wire extension is hindered.

The present invention solves the above-mentioned conventional problems, and is easy to open and close, is strong with no play in the joint, and is suitable for wire tensioning work, where the pulling rope is constantly in contact with the roller and is fed out smoothly. The aim is to provide a moving gold car.

(Means for Solving the Problems) In order to solve the above-mentioned conventional problems, the present invention includes an upper frame 1 equipped with a running roller 2 on the upper part that can roll on the existing line, and an upper frame 1. A dog-shaped refracting shaft 3 having one end fixed to one end of the lower part, two feed rollers 4 and 5 pivotally supported on the refracting shaft 3, and one end pivotally mounted to the other end of the refracting shaft 3. The other end includes an opening/closing shaft 8 which is configured to be detachably connected to the other end of the lower part of the upper frame 1, and this opening/closing shaft 8.
It is equipped with another feed roller 10 pivotally supported above and a connecting portion such as a hook 7 for connecting a connecting rope 15, and the three feed rollers 4, 5, 10 cooperate to rotate approximately 180 degrees. arc-shaped concave surfaces 4a, 5a, and 10a forming continuous arc-shaped contact surfaces, respectively;
The other end of the lower part of the upper frame 1 has a notch 1a into which the other end of the opening/closing shaft 8 can be inserted from the side, and is always biased by a spring 14 so as to overlap the notch 1a. An engagement plate 12 is attached to the engagement plate 12, and this engagement plate 12 includes an inclined tongue piece 12b that slides against the tip of the opening/closing shaft 8 and is pushed up when the opening/closing shaft 8 is inserted.
A configuration is adopted in which an engaging hole 12a is provided overlappingly above the opening/closing shaft 8 and into which the other end of the opening/closing shaft 8 is fitted.

(Function) The metal wheels 18 of the present invention are used by connecting a large number of metal wheels 18 in advance at predetermined intervals with connecting ropes 15 and suspending them over the existing electric wires W. Each metal wheel 18 pulls up the engagement plate 12 to rotate the opening/closing shaft 8, and connects the end to the upper frame 1.
After opening the lower part of the upper frame 1 and passing the existing electric wire W through the notch 1a,
Close the opening/closing shaft 8 and suspend it from the existing electric wire W. When the opening/closing shaft 8 is rotated in the closing direction, its tip slides against the lower surface of the inclined tongue 12b of the engagement plate 12 and pushes it up, and when the tip matches the engagement hole 12a, the engagement plate 12 At the same time as it is restored by the spring force, the tip of the opening/closing shaft is fitted into the engagement hole 12a and fixed. Then, the running roller 2 of each metal wheel 18 is placed on the existing electric wire W, and the pulling rope 16 of the new electric wire is inserted inside the lower part of the upper frame 1, and the tip of the connecting rope 15 is connected to this pulling rope 16. When the connecting rope 15 is pulled, the metal wheel 18 is suspended over the existing electric wire W at a predetermined interval. As the pull rope 16 is further pulled, the newly installed electric wires 17 are sequentially let out and are smoothly fed over the feed rollers 4, 5, and 10 as they advance. Even if the metal wheel 18 swings during wire extension, the pulling rope 16 and the newly installed wire 17 are always in contact with one of the feed rollers 4, 5, 10, and there is no gap between the adjacent feed rollers 4, 5, 10. Since there is no blockage, the pull rope 16 and the newly installed electric wire 17 are sent out smoothly without any stagnation. When the wire has been extended between the predetermined telephone poles in this way, the connecting rope 15 is pulled to pull the metal wheel 18 and collect it.

(Embodiment) An embodiment of the present invention is shown in FIGS. 1 to 3.
In the figure, reference numeral 1 denotes a substantially chevron-shaped upper frame, and a running roller 2 that can roll on existing electric wires is provided at the upper center of the upper frame. One end of a bending shaft 3 bent in a dogleg shape is fixed to one end of the lower part of the upper frame 1, and two feed rollers 4 and 5 are pivotally supported on the straight part of this bending shaft 3. , is located directly below the running roller 2, and a hook 7 for locking the connecting rope is attached via a fitting 6. One end of an opening/closing shaft 8 is pivotally connected to the other end of the bending shaft 3 by a spring pin 9, and another feed roller 10 is pivotally supported on this opening/closing shaft 8. However,
The above three feed rollers 4, 5, and 10 each have arcuate concave surfaces 4a, 5a, and 10a that cooperate with each other to form a continuous arcuate contact surface of approximately 180 degrees, and each roller 4, 5, and 10 are each held by a retaining ring 11 so as not to move in the axial direction. The other end of the opening/closing shaft 8 has a large diameter portion 8a, which reaches the other end of the lower part of the upper frame 1. And the opening/closing shaft 8
can be engaged with and detached from the notch 1a at the other end of the upper frame by rotating. An engagement plate 12 is attached to the other end of the upper frame 1 so as to overlap the notch 1a. This engagement plate 12 has an opening/closing shaft 8 at a position that matches the notch 1a.
It has an engagement hole 12a through which the other end can be inserted, and one end is pivoted on the upper frame 1 by a pin 13, and the upper frame 1 is always fixed by a spring 14.
They are biased so that they overlap. Further, on the other end side of the engagement plate 12, an inclined tongue piece 12b that stands up diagonally is formed for slidingly contacting the other end of the opening/closing shaft 8.

Next, the operation of the metal wheel 18 of this embodiment will be explained. The metal wheel 18 of this embodiment is used by being connected in advance with a large number of connecting ropes 15 at predetermined intervals and suspended over an existing electric wire W. Each metal wheel 18 opens the lower part of the upper frame 1 by pulling out the engagement plate 12, rotating the opening/closing shaft 8, and pulling out the end from the notch 1a of the upper frame 1, so that the existing electric wire W can pass through it. After that, the opening/closing shaft 8 is closed and suspended from the existing electric wire W. When the opening/closing shaft 8 is rotated in the direction of closing the frame 1, its tip touches the inclined tongue piece 12 of the engagement plate 12.
b Push it up while slidingly contacting the lower surface, and when the tip of the opening/closing shaft 8 matches the engagement hole 12a, the engagement plate 12
is restored by the spring force, and at the same time, the tip of the opening/closing shaft 8 is fitted into the engagement hole 12a of the engagement plate 12 and fixed. Then, the running roller 2 of each metal wheel 18 is placed on the existing electric wire W, and the pulling rope 16 of the new electric wire 17 is inserted inside the lower part of the upper frame 1.
When the tip of the connecting rope 15 is connected to this pulling rope 16 and the connecting rope 15 is pulled, the metal wheel 18 is suspended over the existing electric wire W at a predetermined interval. When the pull rope 16 is further pulled, the newly installed electric wires 17 are sequentially paid out, and the newly installed electric wires 17 advance while being smoothly fed on the feed rollers 2. Gold car 1 during line extension
8 swings, the pull rope 16 and the newly installed electric wire 1
7 always contacts and rolls one of the feed rollers 4, 5, 10, and since there is no gap between adjacent feed rollers 4, 5, 10, the pulling rope 16 and the newly installed electric wire 17 are smoothly moved. sent to.
When the wire has been extended between the predetermined utility poles in this way, the connecting rope 15 is pulled to pull the metal wheel 18 toward one of the utility poles and collect it.

(Effects of the invention) As described above, the present invention includes an upper frame 1 equipped with a running roller 2 that can roll on an existing line on the upper part, and a dogleg shape with one end fixed to one end of the lower part of the upper frame 1. A refracting shaft 3 having a shape, two feed rollers 4 and 5 pivotally supported on the refracting shaft 3, one end of which is pivoted to the other end of the refracting shaft 3, and the other end of which is connected to the lower part of the upper frame 1. It is equipped with an opening/closing shaft 8 configured to be freely engageable and detachable at the end, another feed roller 10 pivotally supported on the opening/closing shaft 8, and a connecting part such as a hook 7 for connecting a connecting rope 15, The three feed rollers 4, 5, and 10 work together to form a circular concave surface 4 that forms a continuous circular arc contact surface of approximately 180 degrees.
a, 5a, and 10a, and the other end of the lower part of the upper frame 1 has a notch 1a into which the other end of the opening/closing shaft 8 can be inserted from the side, and overlaps the notch 1a. An engaging plate 12 is attached which is always biased by a spring 14, and this engaging plate 12 is provided with an inclined tongue piece 12b that slides against the tip of the opening/closing shaft and is pushed up when the opening/closing shaft is inserted. Since the structure has an engaging hole 12a overlapping the notch 1a and into which the other end of the opening/closing shaft 8 is fitted, opening/closing operations for inserting and removing electric wires are easy and work can proceed quickly. Moreover, the joints between the frame 1 and each shaft 3, 8 are strong with no play, and each roller 4,
Since there is no gap between 5 and 10 and they have a contact surface of approximately 180 degrees, even if the metal wheel 18 swings,
The pulling rope 16 or the newly installed electric wire 17 is constantly in contact with the rollers 4, 5, and 10 and is sent out smoothly.
This has the effect of allowing the line extension work to proceed smoothly.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of the present invention. Figure 1 is a front view of the metal wheel, Figure 2 is a perspective view of a part of the metal wheel, and Figure 3 is the wire tensioning work. FIG. 4 is a front view of a conventional gold wheel, and FIG. 5 is a side view of the same gold wheel. 1... Upper frame, 1a... Notch, 2...
...Traveling roller, 3...Bending shaft, 4, 5...Feeding roller, 4a, 5a...Circular concave surface, 7...Hook (connection part), 8...Opening/closing shaft, 10...Feeding roller,
10a... Arc-shaped concave surface, 12... Engagement plate, 12a
...Engagement hole, 12b... Inclined tongue piece, 14... Spring, 15... Connecting rope, 16... Pulling rope,
17...New electric wire, 18...Golden wheel, W...Existing electric wire.

Claims (1)

[Scope of utility model registration request] An upper frame equipped with a running roller that can roll on the existing line on the upper part, a dog-shaped bending shaft with one end fixed to one end of the lower part of this upper frame, and two feeders that are pivotally supported on this bending shaft. a roller, an opening/closing shaft having one end pivotally connected to the other end of the bending shaft and the other end being detachably connected to the other end of the lower part of the upper frame, and another feeder pivotally supported on the opening/closing shaft. the three feed rollers each have an arc-shaped concave surface that cooperates to form a continuous arc-shaped contact surface of about 180 degrees, and the lower part of the upper frame The other end has a notch into which the other end of the opening/closing shaft can be inserted from the side, and an engaging plate that is always biased by a spring is attached so as to overlap this notch. , comprising an inclined tongue that slides against the tip of the opening/closing shaft and is pushed up when the opening/closing shaft is inserted, and an engagement hole overlapping the notch and into which the other end of the opening/closing shaft is fitted. Mobile gold wheel for electric wire installation work.