JP2581745Y2 - Stripping adapter for overhead wire work tools - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stripping adapter to be attached to a work tool when stripping an overhead electric wire.

[0002]

2. Description of the Related Art In indirect hot-line construction, in which overhead electric wire construction is performed without interruption, a worker rides on a bucket for work at height equipped with a manipulator and operates a work tool attached to the tip of a manipulator arm. Do. In this case, a necessary special adapter according to the work content is attached to the work tool in advance.

[0003] For example, a skin adapter shown in Fig. 7 is used as a skin adapter to be attached to a work tool when the skin of an overhead electric wire is hit. This skin patch adapter 5
0 has a slit 52 reaching the center and a cutter 52 facing the edge of the slit 51 so as to be rotatable at a slit opening for insertion of an overhead wire of a work tool (not shown). The cutting edge of the cutter 52 is brought into contact with the overhead wire 53 inserted and held in the slit opening 51 and rotated by a hydraulic motor mounted on a manipulator, so that the overhead wire 53 can be peeled off.

[0004] The peeling adapter 50 is configured such that a cutter attachment 55 corresponding to an applicable overhead wire diameter is replaceably attached to a bracket 54 fixed to a rotating portion of a work tool, and the cutter attachment 55 holds the cutter 52. The cutter holder 56 is screwed. The cutter 52 has a body part pivotally attached to a cutter holder 56 with a spindle pin 57 and is urged to rotate by a spring 58 engaging with the base end, and an adjusting screw provided to abut against the back of the base end. With 59, the rotation is restricted,
The bite amount of the cutter 52 can be adjusted. Reference numeral 60 denotes a brush bracket to which a polishing unit is attached so that the line after polishing can be polished.

FIGS. 8 (a) and 8 (b) are a front view and a cross-sectional view, respectively, showing a cutter portion of another conventional peeling adapter, that is, a mechanism for adjusting the bite amount of the cutter. The cutter 61 is connected to the spindle pin 6
The pivot angle is changed by the operation of an eccentric cam dial 65 provided so as to be in contact with the back portion, and the pivot angle is changed by the operation of an eccentric cam dial 65 provided so as to abut on the back portion. The bite amount can be adjusted.
66 is a spring and 67 is a positioning steel ball.

[0006]

However, in the conventional peeling adapter described above, the pushing of the base end portion of the cutter by the adjusting screw or the eccentric cam dial only rotates the cutter, and the wire is not covered by the wire. The contact angle of the cutter blade changes, and the blade displacement itself cannot be large.
Therefore, there is a problem that the diameter of the applicable electric wire changes cannot be coped with by the above-described cutter bite amount adjusting method.Therefore, each cutter is mounted corresponding to a large number of diameter electric wires. Equipped with a cutter attachment,
It is necessary to select and attach an appropriate cutter attachment each time the work is performed, and there is a problem in economy.

[0007] In view of the above problems, the object of the present invention is to provide a skin adapter for an overhead wire working tool that is easy to handle and can handle a wide range of wire diameters with a single cutter. On offer.

[0008]

In order to achieve the above-mentioned object, the present invention is applied to an overhead wire working tool having a slit opening for inserting an overhead wire, and is rotated by a hydraulic motor of a manipulator to peel off the overhead wire. A peeling adapter to be performed, a bracket attached to a rotating portion of the overhead wire working tool, a cutter attachment having a slit opening corresponding to a wire diameter of the overhead wire and exchangeably attached to the bracket, and the bracket A cutter unit attached to the bracket, the cutter unit being attached to the bracket, a pair of guide rails attached in parallel on the cutter base, and being linearly movable by engaging with the guide rails. Slide base and
A cutter holder that holds the cutter and is attached to one end of the slide base; and a bridge on the slide base.
And a recess is formed in the slide base.
And an elongated hole is formed in the recess in the direction along the guide rail.
To fit the eccentric cam into the recess,
The cutter base and the
Rotatably supported by a cartridge, and
And a moving mechanism with an ear attached.
By rotating the eccentric cam with the
The base to the appropriate position corresponding to the diameter of the overhead wire.
In addition , the dial is brought into contact with the bridge, and a contact portion between the bridge and the dial is provided with a recess and an engagement portion formed by a steel ball, and the lower end of the support shaft is provided with the dial. Is provided with a dial temporary fixing mechanism comprising a spring for pressing and biasing the cutter against the bridge, and a lock nut capable of fixing the support shaft to the cutter base, so that the positioning of the cutter can be performed in a one- touch manner. .

[0009]

The bracket of the genuine peeling adapter to which the cutter unit has been attached in advance is attached to the slit opening of the overhead wire working tool, and a cutter attachment corresponding to the wire diameter of the overhead wire to be worked is attached to this bracket.
Next, by operating the slide base moving mechanism of the cutter unit, the cutter can be moved and set to an appropriate bite amount position suitable for the target overhead line. After setting the cutter position, operate the manipulator to insert the overhead wire into the slit opening of the genuine peeling adapter, and operate the hydraulic motor to rotate the cutter unit together with the bracket,
The cutter strips the overhead wire. If the target is an overhead line with a different wire diameter, replace the combined cutter attachment with a new overhead line, and operate the cutter unit moving mechanism as described above to adjust the position of the cutter. Can perform plying work.

[0010] When the cutter base moving mechanism is a dial / eccentric cam system, after the required cutter attachment is attached, turning the dial simultaneously rotates the eccentric cam and linearly moves the cutter base along the guide rail. . Since the movement position of the cutter is determined by the rotation angle of the eccentric cam, it is sufficient to just look at the rotation display of the dial, and the handling is simple.

The provision of a dial temporary fixing mechanism by an engagement mechanism between a dent between a dial and a bridge and a steel ball,
By providing a plurality of recesses corresponding to the appropriate rotation angle of the eccentric cam in advance on the dial side, the cutter position can be set in a one-touch manner, so that handling is simplified and workability is improved.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a stripping adapter for an overhead wire working tool according to the present invention; FIG. 1 is a front view of an overhead wire working tool to which the peeling adapter of the present invention is attached, FIG. 2 is an enlarged side sectional view of the peeling adapter of FIG. 1, and FIG. 3 is a front view thereof. In FIG. 1, reference numeral 1 denotes an overhead wire working tool, which attaches a flange portion 2 at a base thereof to a manipulator arm of a manipulator of a bucket for working at height. This overhead wire working tool 1 has a slit opening 3 for insertion of an overhead wire reaching the axis at a tip end thereof, and a skin so that it can rotate integrally with an output gear 4 housed in the slit opening 3 portion. Attach the patch adapter 5. That is, the peeling adapter 5 is fitted to an adapter bracket 7 (FIG. 2) of the overhead wire working tool 1 in which the cutter bracket 6 part rotates integrally with the output gear 4, and is arranged on a peripheral edge of the adapter bracket 7. It is attached by being prevented from falling off by the detachable slide stopper 8 provided.

The cutter bracket 6 includes a cutter attachment 10 having a slit opening 11 corresponding to the wire diameter of the overhead wire 9 and being exchangeably mounted. The cutter attachment 6 is held by turning the dial 13 while holding the cutter 12. And a cutter unit 14 capable of changing the position of the cutting edge of the cutter motor. After the manipulator is operated to insert the overhead wire 9 into the axis of the slit opening 11 of the cutter attachment 10, the hydraulic motor built in the manipulator is provided. , The cutter bracket 6 rotates together with the output gear 4 so that the cutter 12 peels off the overhead wire 9. Reference numeral 15 denotes a brush bracket. Usually, a polishing unit using a metal brush is attached to the brush bracket 15 so that the brush can be polished in cooperation with the above-mentioned skin patch.

Further, details of the above-mentioned skin adapter 5 will be described with reference to FIGS. As shown in the cross-sectional view of FIG. 2, the cutter bracket 6 includes a lower bracket 6 </ b> A and an upper bracket 6 each having a slit opening on a side portion.
B and the lower bracket 6A
The base is the adapter bracket 7 of the overhead wire working tool 1.
An engagement groove 17 is engaged with a protruding engagement pin 16 to form a cylindrical body with a flange portion 6a to be fitted therein. The upper bracket 6B overlaps with the flange portion 6a of the lower bracket 6A. It is formed in a substantially ring shape.

An arc-shaped slide groove 18 is formed in the lower bracket 6A so as to surround the shaft center. A slide shaft 19 passing through the slide groove 18 is screwed to the upper bracket 6B. The bracket 6B is rotatable with respect to the lower bracket 6A. As shown in FIG. 4, the upper bracket 6B is provided with an arc-shaped groove 20 parallel to the slide groove 18 and a spring 21 accommodated therein. The spring 21 has one end engaged with the upper bracket 6B and the other end engaged with the lower bracket 6A. Therefore, because of the load acting on the cutting edge of the cutter 12, the upper bracket 6B The lower bracket 6A rotates with a delay.

The cutter attachment 10 is composed of a lower attachment 10A, an upper attachment 10B and a middle attachment 10C each having a slit opening 11 for insertion of an overhead wire on a side portion, and is combined in advance in advance to form the middle attachment 10C. , And can be attached to and detached from the upper bracket 6B. That is, the lower attachment 10A has an inner diameter corresponding to the wire diameter of the overhead wire 9, forms a cylindrical body fitted to the lower bracket 6A, and the intermediate attachment 10C engages and holds the lower attachment 10A in a rotatable state. At the same time, an upper attachment 10B having the same diameter as the lower attachment 10A is screwed. That is, the upper attachment 10B and the intermediate attachment 10C rotate together with the upper bracket 6B, and the lower attachment 10A rotates together with the lower bracket 6A. Therefore, the lower attachment 10A and the upper attachment 1
With 0B, the stripping work by the cutter 12 is started after the overhead wire 9 is securely held at the shaft center, and stable work can be performed. Further, in the peeling adapter 5 of the present invention, it is necessary to replace the cutter attachment 10 for each wire having a different wire diameter. , And can be fixed with only one fixing bolt 23.

Further, as shown in FIG. 3, on the upper bracket 6B, a cutter base 24 of the cutter unit 14 is provided adjacent to the intermediate attachment 10C of the cutter attachment 10, and a brush of a line polishing unit (not shown). Although the bracket 15 is attached by bolts, the cutter base 24 is attached to the upper bracket 6B at two locations by set bolts 25 and fixing bolts 26. That is, as will be described later, one of the set bolts 2 is used so that replacement of the cutter attachment 10 is not hindered.
By removing 5, it is possible to rotate around the other fixing bolt 26 as a fulcrum.

A pair of guide rails 27 having projecting portions facing each other are screwed onto the cutter base 24, and a slide base 28 having a convex cross section that slides on the cutter base 24 by engaging with the guide rails 27. Is provided. A cutter holder 29 is screwed to a front portion (a slit opening side) of the slide base 28, and the cutter holder 29 is attached to the cutter holder 29.
The body part with the spindle pin 3
It is pivoted at zero. Further, in this cutter holder 29, a spring 31 is attached to the cutter holder 29 and the cutter 12.
(FIG. 2), and the cutter 12 is
A cutter angle adjusting screw 32 for pressing the base of the cutter 12 is provided so as to rotate and bias the rotation of the cutter 30 around the fulcrum, and adjust the cutting edge angle of the cutter 12 against the biasing force.

Referring also to the partial cross-sectional views of FIGS. 5 and 6, a recess 33 is formed at the rear of the slide base 28 by cutting off the upper part in the left-right direction.
A long hole 34 extends through the lower part of the three parts in the front-rear direction. A guide rail 2 is provided at the rear of the cutter base 24.
The bridge 35 is screwed over the bridge 7, the bridge 35, the elongated hole 34 of the slide base 28, and the cutter base 24.
Is provided by a vertical shaft which penetrates the eccentric cam 37 in the middle part.
The slide base 28 serves as a support shaft for the eccentric cam 37.
Is fitted in the concave portion 33. And the support shaft 3
6 is fixed to the upper end of the bridge 35 by a spring pin 38 to be in contact with the upper surface of the bridge 35, and the lower end of a support shaft 36 through which the slide base 28 is inserted is provided with a spring 39.
And urged downward, and the lock nut 40 is screwed (FIG. 6).

In the cutter unit 14, the dial 1
3 to rotate the eccentric cam 37, the eccentric cam 3
7 presses the front and rear wall surfaces of the concave portion 33 of the slide base 28 with which the slide base 28 abuts to move the slide base 28 back and forth by the guide of the guide rail 27, so that the cutting edge position of the cutter 12 can be moved back and forth.

In the cutter unit 14, a depression 41 is provided on the upper surface of the bridge 35, and a steel ball 42 is formed on the bridge 35 together with the downward biasing of the support shaft 36 by winding the spring 39. Is provided with a plurality of recesses 43 so as to be engageable with the steel balls 42 so that the dial 13 can be engaged at a predetermined angular position and temporarily fixed (FIG. 5). That is, the eccentric cam 37 and thus the dial 13
Rotation angle position of the slide base 28 and the cutter 12
Since the front and rear movement positions of the cutting edge correspond to each other, a recess 43 is formed on the back surface of the dial 13 so as to be able to engage with the steel ball 42 on the bridge 35 side at each cutting edge position that matches the wire diameter of the standardized overhead wire.
Is engraved, and at the same time, a numeral mark 45 is imprinted on the dial 13 at a position facing the matching mark 44 imprinted at an appropriate location on the upper surface of the bridge 35. Also, corresponding numbers are marked on the surface of the intermediate attachment 10C corresponding to the wire diameter of the overhead wire, and the number of the dial 13 is adjusted to the matching mark 44 on the bridge 35 according to the displayed number of the intermediate attachment 10C. Thus, a required cutter edge position is set.

In the peeling adapter 5 of the present embodiment constructed as described above, the set bolt 25 of the cutter unit 14 is removed and the cutter unit 14 is rotated with the fixing bolt 26 as a fulcrum prior to the overhead wire work. If the user moves backward and removes the fixing bolt 23 of the intermediate attachment 10C attached to the upper bracket 6B, the cutter attachment 10 can be pulled out upward,
After being extracted, the intermediate attachment 10C of the cutter attachment 10 corresponding to the overhead wire to be worked is fitted in accordance with the positioning pin 22 and fixed with the fixing bolt 23. Next, the cutter unit 14 is moved back and fixed to the upper bracket 6B with the set bolt 25. Thereafter, by turning the dial 13 of the cutter unit 14 to match the engraving position corresponding to the new overhead wire 9 with the matching mark 44, a predetermined biting position into the overhead wire covering is set.
If necessary, turn the cutter angle adjusting screw 32 to adjust the angle. However, since the cutter 12 contacts the overhead wire covering at a substantially constant angle regardless of the wire diameter,
This angle adjustment is performed only for one overhead line, and no adjustment is required for the other overhead lines.

At the time of the overhead wire operation, the operator operates the work bucket and the manipulator to insert the overhead wire 9 into the slit opening 11 of the stripping adapter 5 of the overhead wire working tool, and activates the hydraulic motor of the manipulator. The peeling adapter 5 rotates together with the gear 4, but first, a load is applied to the cutting edge of the cutter 12, whereby the output gear 4, the lower bracket 6A and the lower attachment 10A rotate while compressing the accommodated spring 21 and insert. After holding the overhead wire 9 in a holding state, the upper bracket 6B, the upper cutter attachment 10B, the intermediate attachment 10C, and the cutter unit 14 rotate, and the cutter 12 bites into the covering of the overhead wire 9 and starts peeling. By moving the work bucket or the manipulator along the overhead line in conjunction with the rotation of the cutter unit 14, a predetermined length of skin can be cut off.
Since the load acting on the cutting edge of No. 2 is eliminated, the upper bracket 6B and the cutter unit 14 are rotated by the resilient force of the compressed spring 21 so that the lower bracket 6A previously rotated.
By rotating the output gear 4 in the reverse direction and aligning the openings with the opening of the lower attachment 10A, the overhead wire working tool can be removed from the overhead wire.
Also, when the brush bracket is attached,
Polishing of the overhead wire after peeling can be performed cooperatively.

Further, as a modified example of the dial positioning system in which the eccentric cam and the dial of the above embodiment are integrated, as a concave configuration of the slide base in which the eccentric cam is fitted so as to improve the positional accuracy of the cutter blade, The rear wall may be formed in a movable body, and a load may be applied from behind by a biasing force of a spring.

In the above embodiment, an eccentric cam system is adopted as a preferred system of the present invention for linear movement of the cutter, and the positioning operation can be performed in a one-touch manner with a dial integrated with the eccentric cam. However, the linear movement method of the cutter in the present invention is not necessarily limited to the method of the embodiment.

[0026]

As described above, according to the present invention, the cutter can be linearly moved back and forth with respect to the overhead wire inserted into the slit opening without using the cutter angle adjusting screw as in the prior art. As a result, it is possible to easily set an appropriate amount of covering bite with a single cutter unit without replacing the cutter unit each time for an overhead line with a wide range of wire diameters. An adapter can be provided , and the use of an eccentric cam dial system for the moving mechanism has the effect of making handling simple and convenient. Further , in the apparatus provided with the temporary fixing mechanism of the dial, the handling is further simplified, and the cutter position can be set in a one-touch manner, so that the workability is improved.

[Brief description of the drawings]

FIG. 1 is a front view of an overhead wire working tool to which a peeling adapter according to the present invention is attached.

FIG. 2 is an enlarged side sectional view of the peeling adapter of FIG. 1;

FIG. 3 is an enlarged front view of the peeling adapter of FIG. 1;

FIG. 4 is a partial sectional view taken along the line IV-IV in FIG. 2;

FIG. 5 is a partial sectional view taken along the line VV of FIG. 2;

FIG. 6 is a partial sectional view taken along the line VI-VI in FIG. 3;

FIG. 7 is a front view of a conventional leather adapter.

8A and 8B are views showing a cutter portion of another conventional peeling adapter, wherein FIG. 8A is a front view and FIG. 8B is a sectional view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Overhead wire working tool 3 Split opening 4 Output gear 5 Peeling adapter 6 Cutter bracket 6A Lower bracket 6B Upper bracket 8 Removable slide stopper 9 Overhead wire 10 Cutter attachment 10A Lower attachment 10B Upper attachment 10C Intermediate attachment 11 Split opening 12 Cutter 13 dial 14 cutter unit 16 engagement pin 17 engagement groove 22 positioning pin 23 fixing bolt 24 cutter base 25 set bolt 26 fixing bolt 27 guide rail 28 slide base 29 cutter holder 30 spindle pin 31 spring 32 cutter angle adjusting screw 33 recess 34 Slot 35 Bridge 36 Support shaft 37 Eccentric cam 39 Spring 40 Lock nut 41 Depression 42 Steel ball 43 Depression

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H02G 1/12

Claims (2)

(57) [Scope of request for utility model registration] 1. A stripping adapter which is attached to an overhead wire working tool having a slit opening for insertion of an overhead wire, and which is rotated by a hydraulic motor of a manipulator to peel off the overhead wire. A bracket attached to the bracket, a cutter attachment having a slit opening corresponding to a wire diameter of the overhead wire, the cutter attachment being exchangeably attached to the bracket, and a cutter unit attached to the bracket, wherein the cutter unit comprises the bracket A cutter base attached to the cutter base, a pair of guide rails attached in parallel on the cutter base, a slide base capable of engaging with the guide rail and linearly moving;
A cutter holder that holds the cutter and is attached to one end of the slide base; and a bridge on the slide base.
And a recess is formed in the slide base.
And an elongated hole is formed in the recess in the direction along the guide rail.
To fit the eccentric cam into the recess,
The cutter base and the
Rotatably supported by a cartridge, and
And a moving mechanism to which an ear is attached , wherein the eccentric cam is rotated by the dial to linearly move the slide base to an appropriate position corresponding to the wire diameter of the overhead wire. Leather strip adapter for tools. 2. The method according to claim 1, wherein the dial is brought into contact with the bridge, and a contact portion between the bridge and the dial is provided with a recess and an engagement portion formed by a steel ball.
2. A tool for an overhead wire working tool according to claim 1, further comprising a dial temporary fixing mechanism comprising a spring for urging the dial against the bridge and a lock nut capable of fixing the support shaft to the cutter base. Peeling adapter.