JPH022016Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention relates to a separation roller device for removing twists between the wire and the rope that pulls the wire when extending the wire onto a cable tray. It is.

(Prior art) Conventional electric wire extension work involves hanging a towing rope around a number of guide rollers installed at predetermined intervals on a cable tray, circulating it, pulling it with a traction device, and attaching the wire to the towing rope. This is done by tying the ends one after another and pulling each end to a predetermined position.

(Problems to be solved by the invention) In the conventional wire extension method described above, twisting occurs between the tow rope and the electric wire during a long wire extension.
There is a problem in that it takes time and effort to separate the electric wire from the rope. This invention attempts to solve the above-mentioned conventional problems by forcibly separating the electric wire and the rope during the wire extension.

(Means for solving the problem) In this invention, the large-diameter roller 5, which has an annular groove 5a on its outer periphery into which the towing rope R fits, is relatively arranged on the opposite side of the towing direction, thereby preventing the electric wire from slipping down due to its own weight. The large-diameter roller 5 is separated from the towing rope R along the inclined side surface 5b, and a separating roller 10 having a collar 10c that can be inserted between the towing rope R and the electric wire W is arranged in front of the large-diameter roller 5.

(Function) When the towing rope R and the electric wire W are pulled to the large diameter roller 5 in a twisted state, the towing rope R is fitted into the outer circumferential annular groove 5a of the large diameter roller 5, so it separates from the electric wire W. Due to its own weight, the electric wire W slips slightly downward along the inclined side surface 5b of the large-diameter roller 5 while separating from the rope R. After passing through the large-diameter roller 5 in this manner, the cutting collar 10c of the front roller device 7 cuts in between the tow rope R and the electric wire W to completely separate them.

(Embodiment) The rear roller device 1 shown in FIGS. 1 and 2 is attached to the rear of the cable tray T so that the tow rope R and the electric wire W pass through it relatively first. In Figures 1 and 2, a bracket 2 having a substantially U-shaped cross section is shown.
supports the shaft 3 horizontally. A large diameter roller 5 is fixed to the shaft 3 near one end, and a small diameter roller 4 is fixed adjacent to the side thereof. The large diameter roller 5 has an annular groove 5a having an arcuate cross section on its outer periphery, into which the traction rope R is fitted, and also has an inclined side surface 5b that swells into a conical shape on the small diameter roller 4 side. The small diameter roller 4 has a flange 4a at the end opposite to the large diameter roller.
Further, a guide plate 6 that stands up along the large diameter roller 5 is fixed to the side of the bracket 2 on the large diameter roller 5 side.

The front roller device 7 in FIGS. 3 and 4 is attached to the front of the cable tray T so that the tow rope R and the electric wire W pass through it relatively after the rear roller device 1. In FIGS. 3 and 4, a bracket 8 having a substantially U-shaped cross section supports a shaft 9 horizontally. A separation roller 10 is fixed to the shaft 9. The separation roller 10 has flanges 10 on both ends.
a, 10b, and a large diameter interrupting collar 10c in the middle part.
has. The split collar 10c is a tow rope R divided by the large diameter roller 5 of the rear roller device 1.
It is arranged so as to correspond to the side of the large-diameter roller 5 so that it can be inserted between the wire and the electric wire W. Thus, a towing rope passage recess 11 is formed between the collar 10a and the inserting collar 10c, and a wire passing recess 12 is formed between the collar 10b and the inserting collar 10c.

The separating roller device of the present invention, which is composed of two roller devices 1 and 7, is installed side by side on the side of the cable tray T, as shown in FIG. Rear roller device 1
is fixed to the rear, that is, to the side in the downward direction of the electric wire, and the front roller device is fixed to the front, that is, to the side in the direction of movement of the electric wire.

The towing rope R and the electric wire W are wound around a large number of guide rollers on the way and are pulled along the cable tray T. Particularly at the bent portion of the cable tray T, the tow rope R and the electric wire W are likely to become twisted at this point because the cable is wrapped around the side surface of the vertical guide roller. The device of the present invention is used to remove this twist. That is, when the tow rope R and the electric wire W come to the rear roller device 1 in a twisted state, the tow rope R fits into the outer circumferential groove 5a of the large diameter roller 5, so the electric wire W separates from the tow rope R and is twisted by its own weight. It slides down the inclined side surface 5b. After the electric wire W and the tow rope R pass through the rear roller device 1 in a state where they are separated from each other, they immediately reach the front roller device 7, and the cut-in collar 10c of this
inserts between the electric wire W and the tow rope R, completely separating them and removing the twist between them. The towing rope R and the electric wire W run in parallel within the recesses 11 and 12, respectively.

(Effect of the invention) In this invention, after the towing rope R and the electric wire W are easily divided by the large-diameter roller 5 of the rear roller device 1, the cutting collar 10 of the front roller device 7
By c, the two can be completely separated and the twist can be removed smoothly.

[Brief explanation of the drawing]

Fig. 1 is a front view of the rear roller device, Fig. 2 is a sectional view of Fig. 1, Fig. 3 is a front view of the front roller device, Fig. 4 is a sectional view of Fig. 3, and Fig. 5 is an installed state. FIG. 1... Rear roller device, 2... Bracket, 5
... Large diameter roller, 5a ... Annular groove, 5b ... Inclined side surface, 7 ... Front roller device, 8 ... Bracket, 10 ... Separation roller, 10c ... Interrupting collar, R
...Tow rope, T...cable tray.

Claims (1)

[Claims for Utility Model Registration] A bracket that can be fixed to a cable tray, is horizontally supported by the bracket, has an annular groove on its outer periphery with a cross-sectional shape into which a towing rope can fit, and is hung in the annular groove on the outer periphery. A large-diameter roller having an inclined side surface for pulling the electric wire that has fallen away from the tow rope due to its own weight to the side of the tow rope, and a horizontally pivoted roller adjacent to the inclined side surface of the large-diameter roller and also horizontally supported on the bracket. a rear roller device equipped with a small-diameter roller of the rear roller device; a bracket that can be fixed to a cable tray; and a towing rope and an electric wire that are horizontally supported on the bracket and separated from each other by a large-diameter roller of the rear roller device. a separating roller having a large-diameter cutting collar in the middle part that can be inserted into the rear roller, a separating roller having a recess on one side on which a tow rope is placed, and a recess on the other side on which an electric wire is placed; A separation roller device for electric wire stretching, comprising a front roller device installed at an appropriate interval on the towing direction side of the device.