JPS5821291Y2 - Live wire sheath stripper - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a tool for partially stripping the insulation coating of a live high-voltage insulated overhead line.

Describing the drawings in detail below, reference numeral 1 denotes an insulated support operation tube, inside which rotatably supports an insulated operation handle 5 having an insulated operation handle 3 fixed at one end and a rotary locking cam 6 fixed at the other end. ing.

2 shows an insulating collar that increases the insulation creepage distance.

9.15 connects the coated cutters 10 and 16 to the wire clamping part 21.2.
2, the cutter holder 1 is installed parallel to the electric wire A.
1.17 is a discharge port for the cut covering body, 12 is a movable shaft that supports a pair of cutter holders 9 and 15 in combination, and 8 is a base 4.
is a cutter rotating shaft provided on the main body metal fitting 7 fixedly attached to the insulated support operation tube 1, and pivotally supports the tip of one cutter holder 9.

Reference numeral 13 denotes a protrusion provided at the end of the other cutter holder 15, which is locked by a 5-turn locking cam and 60 rotations, and allows the electric wire A to be attached to the opening of the wire clamping portion 22 of the cutter holder 15. It opens like this and locks that state.

14, when the protruding portion 13 is disengaged from the rotation locking cam 6, the wire clamping portions 21.2 of the pair of cutter holders 9 and 15
2 is a compression spring that acts to force the sheath cutters 10 and 16 to sink into the wire sheath B.

Next, the operating procedure and operation will be explained.

First, to explain the preparation operation, let us assume a state diagram without the electric wire A in FIG.

When the insulated operating handle 3 shown in FIG. 1 is rotated counterclockwise, the rotary locking cam 6 shown in FIG.
As shown in FIG. 4, the pressing surface 18 of the locking cam 6 gradually presses the prong 13 as shown in FIGS. It engages with the protruding cam 19 and holds the cutter holder 15 in a stable state.

During this operation, the movable shaft 12 is pressed against the side surface of the main body metal fitting 7, compressing the compression spring 14 and causing the wire clamping portions 21, 2 to compress.
2 is fully opened and held in that state to complete the preparation for wire attachment.

FIG. 1 shows its ready state.

Lift up the devised stripper set like this,
Live line state 9 When the openings of the wire clamping parts 21 and 22 are hooked to the high-voltage insulated overhead wires, when the insulation operation handle 3 is rotated clockwise, the protruding part 13 changes from the state shown in FIG. 6 to the state shown in FIGS. When the state changes to the state shown in FIG. 4 and continues to rotate, the protrusion 13 separates from the locking cam 6 while gradually clamping the power source A by the elastic force of the compression spring 140 as shown in FIG. 2, and the cutter holder 9, 15 can freely rotate around the cutter rotating shaft 8.

FIG. 2 shows a state in which the electric wires have been installed.

Next, when the insulation support operation tube 1 is gently pulled down once and then pushed up again, the cutter holder 9, 15 rotates around the cutter rotation shaft 8, and the coated cutter 10.16 moves onto the surface of the fixed electric wire A. It will rotate while rubbing.

Then, the stripper rotates and moves to the position indicated by the two-dot chain line in FIG.

Next, when the insulation support operation tube 1 is gently pulled down and then pushed up, the sheathed cutter 10 is removed as shown by the solid line in FIG.
, 16 rotate half the circumference of the wire A while biting into the surface of the wire A in a fixed state and cutting the coating to a certain depth.

Since the sheathing cutter 10° 16 has two blades, it cuts the sheathing around the entire circumference of the electric wire A with a half-circle rotation movement, and cuts the sheathing around the entire circumference of the electric wire A.
17 is allowed to fall to complete the stripping of the coating B.

To remove the stripping device from the wire A, rotate the operating handle 3 counterclockwise again in the position shown in FIG. , the wire clamping parts 21 and 22 are in an open state and can be pulled out from the wire.

As described above, this invention uses the coated cutter 10, which is placed parallel to the wire A to be clamped by the wire clamping parts 21 and 22.
16 are provided on a pair of cutter holders 9 and 15 which are supported in combination by a movable shaft 12, respectively.

One of the holders 15 has a protrusion 13 that is engaged by a rotary locking cam 6 fixed to the tip of the operating rod 5 installed in the insulated support operation tube 1, and the other holder 9 has a main body. A compression spring body 14 is provided between the two holders 9 and 15, which is rotatably supported by the cutter rotating shaft 8 of the metal fitting 7, and can hold the electric wire A attached to the electric wire clamping parts 21 and 22. Since this is a live wire sheathing stripper that is fixedly installed on the insulating support operation tube 1, it is easy to handle and can strip the sheath quickly and reliably, as described above.

In particular, since the cutter holder can be reliably attached to and removed from overhead wires at high places, it is extremely useful as a coating stripper for live wires.

[Brief explanation of drawings]

Figure 1 is an outline drawing of the live wire sheathing stripper according to this invention.
FIG. 2 is a partial cross-sectional view showing the clamping state of the electric wire A, FIG. 3 is a diagram of the coating stripping operation, and FIGS. It is an explanatory view of an engaged state with.

Claims (1)

[Scope of utility model registration request] Covered cutters 10 and 16 arranged parallel to the wire A to be clamped by the wire clamping parts 21 and 22 are respectively provided in a pair of cutter holders 9 and 15 that are combined and supported by the movable shaft 12, and one of the cutter holders 9 and 16 is held. The body 15 has a protrusion 13 that is engaged by a rotary locking cam 6 fixed to the tip of the operation rod 5 installed in the insulated support operation tube 1, and the other holding body 9 has a protrusion 13 that is engaged with the tip of the operation rod 5 installed in the insulated support operation tube 1. One-car holder 9, 15 is supported on the rotating shaft 8.
A compression spring body 14 capable of clamping the electric wire A attached to the wire clamping parts 21 and 22 is provided between them, and the base 4 of the main body metal fitting 7 is a live wire sheathing stripper which is fixed to the disconnected wire support operation tube 1. vessel.