JPH0444487B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides an overhead wire stripping device that peels off approximately 5 cm of the polyethylene insulation layer of the overhead wire after the wire has been extended, corresponding to the wire attachment position of the line post insulator. It is related to.

[Conventional technology]

Conventionally, when stripping the coating layer of an electric wire that has been stretched and installed in accordance with the wire installation position of this type of line post insulator, move the electric wire to the line post insulator, mark the electric wire installation position, and remove the wire from the line post insulator. The wires are removed from the wire, and the insulating layer of polyethylene etc. is peeled off manually using a knife.

[Problem that the invention seeks to solve]

In the conventional method of peeling off the covering layer of the electric wire according to the wire attachment position of the line post insulator, the overhead wire that has been stretched is moved to the electric wire attachment position of the line post insulator, the peeling position is marked, and the overhead wire is removed. Remove it from the line post insulator, peel off the covering layer manually using a knife, move the overhead line again to the wire attachment position of the line post insulator, and fix it. Disadvantages include the hassle of having to move it twice and the heavy work at heights is dangerous.

In addition, when manually peeling off the wire coating layer, the peeled area is marked and the marked area is peeled off using a knife, so the peeled width becomes uneven and may not match the wire installation position on the line post insulator. However, there is a drawback that the process for attaching the wires to the line post insulator is uneven.

The present invention provides a method for attaching a wire to an overhead wire that has finished extending at the side of the cross arm to which a line post insulator is attached.
To provide an overhead wire stripping device capable of automatically stripping the coating layer of an electric wire to a constant width by turning a handle corresponding to the wire attachment position of a line post insulator.

[Means for solving problems]

In order to achieve the above object, in the present invention, when the line post insulator is installed in an upright position, the bottom of the L-shaped fixing base is fixed with a fixing metal fitting so as not to touch the arcing horn 33. and a rotary cylinder support hole is provided in the upright piece of the fixed base,
A rotary cylinder slightly longer than the base is rotatably and slidably inserted into the support hole, and a blade mounting bracket and a handle for rotating and sliding the rotary cylinder are respectively fixed to the tip and base ends of the rotary cylinder. , a wire holding cylinder slightly longer than the rotating cylinder is inserted into the rotating cylinder, a semi-circular groove is provided below the peripheral surface of the proximal end of the wire holding cylinder perpendicular to the axial direction of the holding cylinder, and the groove a set screw that is fitted into the rotary cylinder and restricts rotation of the electric wire holding cylinder within the rotary cylinder;
A stripping blade is attached to the blade fitting at the tip of the electric wire holding tube and protrudes into the wire insertion hole of the blade fitting, a knob for rotating the electric wire holding tube is fixed to the base end of the holding tube, and the fixing base is fixed to the base end of the holding tube. , a notch for inserting electric wires is provided on the top of each of the rotary tube, the blade mounting bracket, the handle, the wire holding tube, and the rotating knob so that they are overlapped with each other, and the overhead wire is inserted through the overlapping notches for inserting the wire after the wire has been extended. It is designed to be inserted.

[Effect]

Bracelet 2 with line post insulator 9 installed upright
At the center line post insulator 9, fix the bottom side 1a of the fixed base 1 with the fixing bracket 3, and insert the rotary cylinder 7 into the rotary cylinder support hole 4 drilled in the upright piece 1b of the fixed base 1, and fix it. Base 1, rotary cylinder 7, blade mounting bracket 12,
The electric wire insertion holes 32 are formed by overlapping the electric wire insertion notches 6, 8, 15, 19, 26, and 31 formed in the handle 16, the electric wire holding cylinder 25, and the electric wire holding cylinder rotation knob 29, respectively, In order to insert the overhead wire after the wire has been extended, use the wire holding tube rotation knob 29 with the wire holding tube 25 fixed at the base end to insert the stopper drilled in the rotating tube 7 into the semicircular arc groove 27 of the holding tube. When the wire holding cylinder 25 is rotated by guiding the screw 28,
Overlapping electric wire insertion notches 6, 8, 15, 1
Of the wire holding tubes 25 and the rotation knob 29, only the wire insertion notches 26 and 31 of the wire holding tubes 9, 26, and 31 are reversed to close the wire insertion holes 32, and the inserted overhead wires are removed from the wire holding tubes 25. There is no need to take it out.

Furthermore, when the rotary tube 7 is rotated and slid by the handle 16 at the base end, the peeling blade 20 of the blade mounting bracket 12 fixed to the tip of the rotary tube 7 also rotates and slides around the overhead wire. It becomes possible to peel off the wire in accordance with the moving distance, and the covering of the overhead wire can be peeled off corresponding to the wire attachment position of the line post insulator 9.

〔Example〕

Reference will now be made in detail to the accompanying drawings, in which exemplary embodiments of the invention are illustrated.

Fig. 1 is an overall perspective view of the overhead wire stripping device of the present invention, Fig. 2 is a plan view of the wire stripping device fixed to the cross arm, and Fig. 3 is a cross-sectional view taken along the line A-A in Fig. 2 in which the wire holding cylinder is reversed.
Figure 4 is a side sectional view, Figure 5 is a parts diagram of the fixed base, Figure 6 is a parts diagram of the rotating tube, Figure 7 is a parts diagram of the wire holding tube, and Figure 8 shows the state in use. FIG.

Reference numeral 1 designates a fixing base having an L-shaped side surface, and attaching the bottom side 1a of the fixing base 1 to a bolt 10 to a known fixture 3 for attaching the line post insulator 9 to the cross arm 2 of a power transmission pole on which the line post insulator 9 is installed upright. It is fixed with nuts 11. Reference numeral 4 denotes a rotary cylinder support hole bored in the L-shaped upright side 1b of the fixed base 1;
An appropriate number of bolts 4a are screwed into the rotary cylinder support hole 4 from the outer periphery so as to project into the rotary cylinder support hole 4. 5 is
This is a watertight cross-linked polyethylene insulated wire for 33kV, and has a polyethylene insulation coating layer 5a.
Reference numeral 6 designates a wire insertion notch for inserting the wire 5, which is bored into the rotary cylinder support hole 4 from the upper end of the upright side 1b of the fixed base 1. Reference numeral 7 denotes a rotating cylinder, which is formed to be slightly longer than the bottom side 1a of the fixed base 1, and has an inner diameter that passes through a wire holding cylinder 25 (described later) into which the electric wire 5 can be inserted, and an outer diameter that allows it to be inserted into the rotating cylinder support hole 4. A spiral groove 7a into which the tip of the bolt 4a screwed into the upright side 1b can be inserted is bored on the outer periphery of the rotary cylinder 7, and a spiral groove 7a is formed in the longitudinal direction (vertical direction) of the outer periphery of the rotary cylinder 7 from the outer periphery. A wire insertion notch 8 that overlaps with the wire insertion notch 6 of the fixing base 1 is bored across the inner diameter.
Reference numeral 12 denotes a blade mounting bracket, which has an insertion hole 14 for the electric wire 5, and whose base is attached to the tip of the rotary cylinder 7 with a set screw 1.
3 and 13, and a wire insertion notch 15 is bored from the upper end thereof to the insertion hole 14 and overlaps with the wire insertion notch 8 of the rotary cylinder 7. Reference numeral 16 denotes a mounting hole 1 that is inserted into the outer periphery of the rotary cylinder 7.
7, a mounting hole 17 is inserted into the base end of the rotary tube 7, and it is fixed with a set screw 18, and a notch 19 for wire insertion that overlaps with the wire insertion notch 8 of the rotary tube 7 is bored at the upper end. It is something. Reference numeral 20 denotes a peeling blade, and a pin 22 is inserted into the diagonal groove 21 of the blade mounting bracket 12 so as to protrude obliquely into the insertion hole 14 of the blade mounting bracket 12.
It is pivotally supported in the insertion hole 14 so that it can move forward and backward. A spring 23 is inserted into a spring insertion hole 23a formed above the oblique groove 21, and is used to constantly press the base end of the skinning blade 20.
The tip of the insert springs in a direction that increases the degree of protrusion into the insertion hole 14. 24 is a set screw screwed in so as to push the tip of the skinning blade 20 toward the insertion hole 14 of the blade mounting bracket 12, and the tip of the skinning blade 20 is inserted into the insertion hole 1
4 in the direction of decreasing the degree of protrusion. Reference numeral 25 denotes an electric wire holding tube that is inserted into the inner diameter of the rotary tube 7, and is molded slightly longer than the rotary tube 7, and has a wire insertion notch 26 formed at the upper end that overlaps with the wire insertion notch 8 of the rotary tube 7. , a semi-circular arc groove 27 is formed perpendicularly to the axis on the lower outer periphery of about 1/3 of the total length of the base end, and the wire holding cylinder 25 is inserted from the base end of the rotary cylinder 7.
into the semicircular arc groove 2 from the side of the rotary cylinder 7.
A set screw 28 that protrudes into the rotary cylinder 7 is attached to the rotary cylinder 7 so that it can be rotated by half a turn and cannot be pulled out.
Reference numeral 29 denotes a rotary knob fixed to the base end of the wire holding cylinder 25 with a set screw 30, and a wire insertion notch 3 that overlaps with the wire insertion notch 26 of the wire holding cylinder 25 is provided at the upper end.
1 is drilled, and by turning the knob 29, the wire holding cylinder 25 is rotated half a turn inside the rotary cylinder 7,
When the electric wire 5 is inserted into the electric wire holding cylinder 25, the fixed base 1 overlaps above to form the electric wire insertion hole 32, the rotating cylinder 7, the blade mounting bracket 12, the handle 16,
Wire insertion notches 6, 8, 15, 19, 26, 31 in the wire holding cylinder 25 and the rotary knob 29, respectively
Since the electric wire insertion notches 26 and 31 of the electric wire holding tube 25 and the rotary knob 29 face downward, the electric wire insertion hole 32 is closed.

When using the present invention, the fixed base 1 is attached to the armrest 2 to which the line post insulator 9 is attached, and the rotary cylinder 7
With the handle 16 facing the hand side, attach the fixture 3 to the line post insulator 9 so as not to touch the arcing horn 33.

Next, return the handle 15 until it touches the upright side 1b of the fixed base 1, and cut out the notches for inserting electric wires in the fixed base 1, rotating cylinder 7, blade mounting bracket 12, handle 16, electric wire holding cylinder 25, and rotating knob 29. 6,8,1
5, 19 and 26, 31 are overlapped to open the wire insertion hole 32.

Further, insert the wire 5 that has been stretched into the opened wire insertion hole 32 into the wire holding tube 25 using an overhead wire roller (not shown), and rotate the wire holding tube 25 by 180 degrees to the left using the rotation knob 29. The electric wire insertion hole 32 is closed to prevent the electric wire 5 from being pulled out from the electric wire insertion hole 32, and the rotating tube 7 is rotated counterclockwise by the handle 16, so that the blade mounting bracket 12 is attached to the upright portion 1 of the fixed base 1.
When the blade mounting bracket 12 is moved as shown by the two-dot chain line in FIG. 3 until it comes into contact with the line post insulator 9, the blade mounting bracket 12 moves left and right with respect to the center of the line post insulator 9 (wire mounting position).

At this time, by adjusting the degree of protrusion of the stripping blade 20 into the insertion hole 14 of the blade mounting bracket 12 in advance by operating the set screw 24, the blade 20 can peel only the polyethylene insulation coating layer 5a of the electric wire 5 to a certain size. (5
cm).

Finally, the wire holding cylinder 25 is rotated 180° in the opposite direction to the above using the rotary knob 29 to open the wire insertion hole 31, and the polyethylene insulation coating layer 5a is opened by a certain dimension.
Take out the stripped electric wire 5 and attach it to the line post insulator 9.
The electric wire 5 is moved to the wire attachment position, and the electric wire 5 is fixed to the line post insulator 9 at the location where the insulating coating layer 5a is peeled off.

〔Effect of the invention〕

The present invention has the above configuration, and the blade mounting bracket 12
moves by an equal distance left and right with respect to the wire attachment position of the line post insulator 9, so that the peeling point of the polyethylene insulation coating layer 5a is always at the wire attachment position of the line post insulator 9, and the peeling width is also constant. Moreover, since the wire can be automatically peeled off by turning the handle 16, the wire installation work to the line post insulator 9 at high places can be done safely and easily, and it is possible to significantly reduce labor costs. Become.

[Brief explanation of the drawing]

The attached drawings show an example of the implementation of the present invention.
Fig. 1 is an overall perspective view of the overhead wire stripping device of the present invention, Fig. 2 is a plan view of the main part when fixed to a cross arm, and Fig. 3 is a schematic diagram of the main part when the wire holding cylinder and blade mounting bracket are rotated by 180 degrees.
4 is a partially sectional side view of the overhead wire stripping device, FIG. 5 is a perspective view of the fixing base,
FIG. 6 is a perspective view of the rotary tube, FIG. 7 is a perspective view of the wire holding tube, and FIG. 8 is a perspective view showing the state of use. 1... Fixed base, 1a... Bottom side, 1b... Standing side, 2... Bracelet, 3... Fixing bracket, 4... Rotating tube support hole, 4a... Bolt, 5... Electric wire, 5a...
Polyethylene insulation coating layer, 6... Notch for inserting electric wire, 7... Rotating tube, 7a... Spiral groove, 8...
...Cutout for electric wire insertion, 9...Line post insulator, 1
0... Bolt, 11... Nut, 12... Blade mounting bracket, 13... Set screw, 14... Insertion hole, 15
...Wire insertion notch, 16...Handle, 17...
Mounting hole, 18... Set screw, 19... Notch for inserting electric wire, 20... Skin stripping blade, 21... Diagonal groove, 22...
... Pin, 23 ... Spring, 23a ... Spring insertion hole, 24 ... Set screw, 25 ... Wire holding tube, 26 ... Notch for inserting electric wire, 27 ... Semicircular arc groove, 28 ... Set screw, 29...Rotary knob,
30... Set screw, 31... Notch for inserting electric wire, 3
2...Wire insertion hole, 33...Arching horn.

Claims (1)

[Claims] 1 Bottom side 1a on the armrest 2 inside the line post insulator 9
An L-shaped fixed base 1 is installed with a fixing bracket 3, and a rotary cylinder 7, which is slightly longer than the length of the base 1a, is rotatably and slidably inserted into the upright side 1b of the fixed base 1. A support hole 4 is provided, a blade mounting bracket 12 is fixed to the tip of the rotary cylinder 7 inserted into the support hole 4, and a handle 16 for rotating and sliding the rotary cylinder 7 is fixed to the base end of the rotary cylinder 7. Insert into the cylinder 7 and rotate the cylinder 7.
A slightly longer wire holding cylinder 25 is provided, and a semicircular groove 27 is provided below the circumferential surface of the base end of the wire holding cylinder 25, and the wire holding cylinder 25 is fitted into the groove 27 to prevent the wire holding cylinder 25 from moving inside the rotating cylinder 7. A set screw 28 for restricting rotation is provided on the rotary cylinder 7, and a blade mounting bracket 12 at the tip of the wire holding cylinder is provided.
is provided with a stripping blade 20 protruding into the wire holding tube 25, a wire holding tube rotation knob 29 is provided at the base end of the holding tube 25, the fixed base 1, the rotary tube 7, the blade mounting bracket 12, the handle 16, The electric wire insertion notches 6, 8, 15, 19, 26, and 31 are provided at the upper part of the electric wire holding cylinder 25 and the rotary knob 29, respectively, so as to overlap with each other, and the overhead wires after the wire extension are inserted into the overlapping electric wires. Insert into the wire holding tube 25 through the notches 6, 8, 15, 19, 26, 31, rotate the wire holding tube 25 with the rotation knob 29 at the base end, and rotate and slide the rotating tube 7 with the handle 16. Let, line post insulator 9
An overhead wire stripping device characterized in that it strips overhead wires corresponding to the wire installation positions.