JPH0112487Y2 - - Google Patents

Description

[Detailed description of the invention] (1) Industrial application field This invention relates to a protective pipe insertion machine that automates the work of installing protective pipes (so-called polyethylene pipes) on distribution lines.
This is especially designed to prevent damage to the electric wires.

(2) Prior Art A protection tube insertion machine that automates the work of attaching a protection tube to a power distribution line is conventionally known, as disclosed in, for example, Japanese Utility Model Publication No. 53-45278.

(3) Problems that the invention aims to solve However, with conventional protective tube insertion machines, the side of the wire at the insertion opening where the protective tube is inserted into the wire is exposed, so it is difficult to insert the protective tube at high speed. There was a problem in that the resulting twisting of the protective tube caused the corner of the protective tube to come into contact with the electric wire, causing damage to the covering of the electric wire.

(4) Means for solving the problems In order to solve the above problems, the present invention provides a protection pipe delivery unit that sends out the protection pipe, and a protection pipe that is attached to an electric wire and sent out by the protection pipe delivery unit. A protective tube insertion machine is equipped with a protective tube insertion section that is pushed open and inserted into an electric wire, and the protective tube delivery section and the protective tube insertion section are connected by a guide that guides the protective tube,
A guard is provided along the wire to protect the side surface of the wire at the insertion opening where the protective tube is inserted into the wire.

(5) Effect With the above configuration, even if the protective tube is twisted when it is inserted at high speed, the corner of the protective tube will come into contact with the guard installed along the wire, and the corner of the protective tube will not touch the covering of the wire. There will be no contact.

(6) Examples Examples of the present invention will be described below with reference to the drawings.

As shown in Figures 1 and 2, the protective tube insertion machine of the present invention has a protective tube delivery section 1 attached to the tip of the sub-boom of an aerial work vehicle, and the protection tube delivery section 1 sends out the protective tube. A protective tube insertion section 2 is attached to the electric wire 4, and a flexible guide is provided between the protective tube delivery section 1 and the protective tube insertion section 2 to guide the protective tube. Connected by 3.

The protective tube delivery section 1 is provided with two pairs of opposing rollers 6 and a rod 7 driven by a hydraulic motor 5, and the legs of the protective tube 12 inserted into the rod 7 are held between the rollers 6, The protection tube 12 is sent out by the rotation of the roller 6, and the guide 3
is connected to the tip of the rod 7, and the protective tube 12 slides along its outer periphery and can be bent elastically in any direction, up, down, left, or right. A curved collar 11 is connected to the tip and is pushed open while guiding the protective tube 12. An insertion opening portion 13 through which the protective tube 12 is inserted into the electric wire 4 has a U-shaped cross section, and the electric wire 4 is inserted inside. A positioned guard 14 is provided along the electric wire 4 to protect the electric wire, and the proximal end of the guard 14 is removably attached to the electric wire 4 by a locking tool 9 operated by a handle 10.

With the above configuration, when installing the protection pipe to the power distribution line, the protection pipe delivery part 1 is attached to the tip of the sub-boom of the aerial work vehicle, and then the protection pipe delivery part 1 is installed.
Next, place the guard 14 of the protective tube insertion part 2 along the electric wire 4, position the electric wire 4 inside the guard 14, and use the locking tool 9 to secure the protective tube insertion part 2. Fix it to the electric wire 4. At this time, guide 3
has flexibility, so the protective tube insertion portion 2 can be easily attached to the electric wire 4.

In the above state, the motor 5 of the protective tube delivery section 1 is driven to rotate the roller 6, and the protection tube 12 is inserted into the rod 7 from the rear of the protection tube delivery section 1. The protection tube 12 is fed out along the outer periphery of the rod 7 and the guide 3 by the rotation of the roller 6, and as shown in FIG.
is pushed open left and right and is attached to the outer periphery of the electric wire 4 through the insertion opening 13. By sequentially connecting the protective tubes 12, the protective tubes 12 are successively attached to the electric wires 4.

As shown in FIG. 4, the sides of the electric wire 4 in the insertion port 13 of the protective tube are protected by the guard 14, so even if the protective tube is twisted when inserted at high speed, the corners of the protective tube 12 does not come into contact with the electric wire 4.

(7) Effects of the invention As described above, according to the invention, the corner of the protective tube does not come into contact with the electric wire at the insertion opening for the electric wire, so the protective tube can be smoothly inserted into the electric wire. Moreover, there is an effect that the electric wire is not damaged during the protective tube insertion work.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of the main parts, Fig. 2 is a plan view of the protective tube insertion machine, Fig. 3 is a cross-sectional view of Fig. 1, and Fig. 4 is the same -.
Cross-sectional view, FIG. 5 is a cross-sectional view of the protective tube. 1...Protection tube delivery section, 2...Protection tube insertion section, 3
... Guide, 4 ... Electric wire, 5 ... Hydraulic motor, 6
... Laura, 7... Rod, 8... Laura, 9...
...Lock, 10...Handle, 11...Brim, 1
2...Protective tube, 13...Insertion port, 14...Guard.

Claims (1)

[Scope of utility model registration request] A protective tube sending section that sends out a In a protective tube insertion machine connected by a guide that guides the protective tube, a guard is provided along the electric wire to protect the side surface of the electric wire at the insertion opening part of the protective tube insertion part where the protective tube is inserted into the electric wire. Characteristic protective tube insertion machine.