JPS5943792Y2 - Multi-core shaft cable entry tool with branch - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a multi-shaft cable entry device with branches.

Conventionally, in order to pull in a multi-core shaft cable with branches, the cable cores were compressed all at once, a Guhring eye was attached, the cable was pulled in, and after being temporarily secured, a retaining fitting was attached to each phase, and insulation treatment was carried out. I try to fix it to the alms-holding insulator.

In some cases, a retaining fitting is attached to each phase at the factory, and an eye bolt is attached to the retaining fitting to be pulled in.

In the former case, the weight of the cable is added to the temporary fixing part during temporary fixing, which tends to cause damage to the temporary fixing part, and it is necessary to pull it back after fixing it to the insulator to take extra work into account. This increases the working time.

In addition, since tension is applied to each phase of the latter, it is extremely difficult to remove eye bolts, wire ropes, etc., and it takes a long time.

The present invention was developed based on the above-mentioned circumstances, and provides a pulling tool that can easily pull in a branched multi-shaft cable in a short time.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

In FIG. 1, a retaining sleeve 3 is compressed and connected to the upper end of a conductor 2 of a shaft cable 1, and a screw hole 4 is provided in the upper end surface of the retaining sleeve 3.

The hanging fitting 5 has a cylindrical shape divided into two parts by a dividing plane parallel to the axis, and each divided piece 5a, 5b has a vertical flange 5as6b projecting outward in the radial direction on the dividing plane.

Moreover, each divided piece 5a=5b is a divided piece of an annular plate having an inner diameter smaller than the outer diameter of the retaining sleeve 3 and larger than the outer diameter of the conductor 2 at the upper end thereof. a, 7b.

Furthermore, the vertical flanges 6a, 6b are each provided with a plurality of through holes 8 distributed in the axial direction.

Further, a U-shaped mounting bracket 10 having a wire rod 9 on the bottom surface which is screwed into the screw hole 4 is provided.

The pulling tool of the present invention having the above structure is used as follows.

First, attach the two-part split piece 7 of the annular plate to the lower end of the retaining sleeve 3.
The hanging fitting 5 is attached to the cable 1 so that a and 7b are in contact with each other.

Next, both ends of the wire rope 11 are fixed to either of the through holes 8 of the vertical flanges 5a, 5b of the hanging fitting, and the wire rope 11
The center thereof is connected to a rope 13 of a hoisting machine via a twister 12.

In this state, pull up the cable and pull it in.

According to the present invention, since the retaining sleeve protrudes upward from the hanging fitting 5, the cable can be fixed to the retaining insulator 14 in the following manner while the cable is pulled up as described above without temporarily fixing the cable. Can be done.

That is, the cable 1 is pulled up until the upper end of the retaining sleeve 4 is located at an appropriate position below the retaining fitting 14a of the retaining insulator 14, and the mounting fitting 10 prepared here is screwed into the sleeve 3, and the cable 1 is is further pulled up to engage the retaining fitting 14a and the mounting fitting 10, and the pin 15 is inserted into the through hole of the hanging fitting and fixed.

As mentioned above, according to the cable pulling tool of the present invention, since the upper end of the cable is located above the hanging fitting, the cable can be held while being lifted, so there is no need for temporary fixing before holding the cable, and there is no damage to the cable. There is no risk of this occurring.

Furthermore, as is clear from the above, there is no need to pull back extra in anticipation of the extra work length, so there is no need to pull back.

Therefore, the working time can be shortened.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2A is a plan view of the main part thereof, and FIG. 2B is a sectional view thereof. 1... Cable, 3... Detention sleeve, 5... Hanging fitting, fia, 5b... Vertical flange, ? a, 7b...7 annular plate divided pieces, 8
...Through hole, 10...Mounting bracket, 14a
...Retaining metal fittings, 14...Retaining insulators.

Claims (1)

[Scope of utility model registration request] A detention sleeve fixed to the end of the cable conductor, a pair of vertical flanges having a plurality of through holes distributed in the axial direction in a two-part configuration, and an annular plate having an inner diameter smaller than the outer diameter of the detention sleeve and larger than the outer diameter of the conductor at the upper end. The branch is a multi-core shaft cable lead-in tool, which has a suspension fitting attached to the upper end of the cable, a wire rod that is screwed to the upper end surface of the retention sleeve, and a retention bracket for the retention insulator and an energized retention bracket.