JP2013118730A - Indirect hot-line work instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an indirect hot-line work instrument in which, when performing an opening/closing operation of a high-pressure cover or the like in indirect hot-line work, even without performing a twisting operation, an engaged state of an attaching hook of the cover can be canceled, furthermore, strict alignment is not required in insertion into the cover and moreover, the opening operation and the closing operation of the high-pressure cover can be performed using the same tip instrument, without using different indirect hot-line work instruments.SOLUTION: A pair of indirect hot-line tip instruments 4, 5 are prepared which comprise plate parts 21, 31 which are long and plate-shaped, tapered tip parts 22, 32 formed at one end side of the plate parts in a length direction, and attaching parts 23, 33 provided at the other end side of the plate parts in the length direction. The pair of indirect hot-line tip instruments 4, 5 are mounted to a pair of grip parts 2a, 2b provided at one end side of an indirect hot-line grip instrument 3 and while overlapping the plate parts with each other, the tip parts are deviated back and forth from each other in the length direction of the plate parts.

Description

  The present invention relates to an indirect hot wire work tool suitable for performing an opening / closing operation of a high-pressure cover or the like in an indirect hot wire work.

  Various high voltage covers such as a high voltage connector cover, a jumper sleeve cover, and a wire retaining clamp cover are attached to the exposed part of the core wire of the overhead power distribution line by an indirect hot wire method. Such a high-pressure cover is composed of a pair of cover members, and the pair of cover members are connected to each other along the longitudinal direction through an elastic hinge so as to be openable and closable, and the other along the longitudinal direction. It can be joined / separated at the side edges, and the joining state is maintained by the mounting hook portion. Therefore, the removal of the high-pressure cover is performed by releasing the engagement state of the attachment hook portion and opening the cover member.

  As a method of releasing the engagement state of the mounting hook, for example, the projecting piece connected to the cover member is gripped with a Yatsuko, and in this state, the tip of the bind hammer is inserted into the electric wire outlet of the high voltage cover, A method of releasing the engagement state of the attachment hook portion by twisting the bind hammer is adopted.

  Also, in the disengagement method using the bind hammer, there are concerns about inconveniences such as large fluctuations in the electric wire, damage to the core of the electric wire, and deformation or damage to the high voltage cover. A tip tool with a U-shaped tip is attached to one end of a strip-like base at the tip of a bar or indirect live wire gripping tool (insulated YATCO), and the tip of this tip is attached to a high-pressure cover A method of releasing the engagement state of the mounting hook part by inserting and twisting the hook part is also considered (see Patent Document 1).

JP 2010-4657 A

  However, in the above-described method, it is necessary to perform a twisting operation after inserting a tip tool attached to the tip of the indirect hot wire working tool into the high-pressure cover, and in order to release the engagement state of the attachment hook portion of the high-pressure cover. Somewhat skillful work was required.

  Also, in the former configuration, it is necessary to insert the tip of the bait striker aiming at the wire outlet, and in the latter configuration, the tip of the tip tool is covered aiming at the engaging portion of the mounting hook. In either case, accurate alignment is required for inserting into the cover, and the work efficiency is not good.

  Further, the above-described work with the tip tool is effective for releasing the engagement state of the mounting hook portion and opening the cover member, but when performing the operation of closing the opened cover member, the cover presser is effective. In order to perform a series of operations, a lot of tools are required.

  The present invention has been made in view of such circumstances, and the engagement state of the cover mounting hook portion can be released without performing a twisting operation, and strict alignment is performed when the cover is inserted into the cover. In addition, it is possible to provide an indirect hot wire working tool that can perform opening and closing operations of a high-pressure cover using the same tip tool without using separate indirect hot wire tools. The main issue.

  In order to achieve the above object, an indirect hot wire working tool according to the present invention is configured by attaching an indirect live wire tip tool paired to a pair of gripping portions provided on one end side of an indirect live wire gripping tool. Indirect hot wire working tools, each of the indirect live wire tool is a flat plate portion formed in a long and flat plate shape, and a tapered tip portion formed on one end side in the longitudinal direction of the flat plate portion. And a mounting portion provided on the other end side in the longitudinal direction of the flat plate portion and attached to the gripping portion, and the pair of indirect hot wire tip tools is connected to the pair of gripping portions. In a state where the flat plate portions are attached and overlapped with each other, the tip portions of the flat plate portions are displaced forward and backward in the longitudinal direction of the flat plate portion.

  Therefore, a pair of indirect live wire tip tools provided in the grip portion of the indirect live wire gripping tool is a flat plate portion formed in a long and flat plate shape, and a taper formed on one end side in the longitudinal direction of the flat plate portion. And a flat plate portion attached to the grip portion of the indirect hot wire gripping tool and provided on the other end side in the longitudinal direction of the flat plate portion and attached to the grip portion. Since each tip is displaced back and forth along the longitudinal direction of the flat plate portion in a state where they are stacked, they can be inserted into the joint portion of the cover member of the high pressure cover from one tip portion and pushed in as it is Thus, the other tip can be inserted.

  And after both front-end | tip parts are inserted in a cover, the cover part which makes a pair will be opened if the flat part of the indirect live-line front end tool which makes a pair by opening the holding part of an indirect live-line gripping tool mutually separates. A force acts in the direction, and it is possible to release the engaged state of the cover mounting hook portion.

  At this time, as an indirect hot wire gripping tool, the gripping portions forming a pair are always urged in the direction away from each other, and by operating an operating portion provided on the other end side of the indirect live wire gripping tool (gripping When the separation distance of the gripping part is changed, a pair of indirect live wire tip tools attached to the paired gripping parts are overlapped by operating the operation part, and in that state on the cover If the operation part is inserted and the operation part is released (if the gripped state is released), the pair of indirect live wire tip tools are urged away from each other, and the engagement state of the cover mounting hook part is released. It becomes possible to do.

  In addition, since each indirect hot wire tip tool has a flat plate portion, the distance between the tip portions of the indirect hot wire tip tool is large when the grip portion is opened. When the high-pressure cover is closed, the pair of cover members can be sandwiched and closed by the opened pair of indirect live wire tip tools, and the tip tool need not be replaced. For this reason, it becomes possible to perform the opening operation and the closing operation of the high-pressure cover using the same indirect hot wire tip tool.

In addition, in the state where the flat plate portions of the indirect live wire tip tool are overlapped, the configuration in which the tip portion is shifted back and forth in the longitudinal direction of the flat plate portion is adjusted by adjusting the attachment position of each tip tool to the gripping portion. The tip part may be shifted back and forth in the longitudinal direction of the flat plate part, and the longitudinal dimension of the flat part of one indirect live wire tip tool is larger than the longitudinal dimension of the flat part of the other indirect live wire tip tool. Alternatively, the length of each tip may be shifted back and forth in the longitudinal direction of the flat plate portion.
Further, in order to reinforce the flat plate portion without obstructing the insertion of the flat plate portion into the joint portion of the pair of cover members, and to supplement the opening of the cover after inserting the flat plate portion into the joint portion of the cover member, You may make it form in the back surface of this the rib from which a protrusion amount becomes large gradually toward an attaching part.

  As described above, according to the present invention, a pair of indirect live wire tip tools that are attached to a gripping portion that forms a pair of indirect live wire gripping tools are formed into a long and flat plate portion and the flat plate. Each of which has a tapered tip formed on one end in the longitudinal direction of the portion and an attachment portion provided on the other end in the longitudinal direction of the flat plate portion and attached to the grip portion. In the state where the tip part of the tip tool is attached to the grip part and the plate parts are overlapped with each other, the tip of the tool is shifted back and forth in the longitudinal direction of the plate part. It is possible to smoothly insert the tip of the tool. In addition, it is possible to release the engagement state of the cover mounting hook part by widening the space between both gripping parts after the tip parts of both indirect live wire tip tools are inserted, so that the twisting operation becomes unnecessary. Skilled work becomes unnecessary.

  In addition, since the plate portion of the indirect hot wire gripping tool is formed in a long shape, the distance between the tip portions of the indirect live wire tip tool becomes large when the grip portion of the indirect live wire gripping tool is opened. When the opened cover is closed, the pair of cover members can be sandwiched and closed. For this reason, it is possible to open and close the high-pressure cover with the same indirect hot wire tip tool, and it is possible to reduce the number of tools prepared during the indirect hot wire work.

  Furthermore, the gripping part that forms a pair of the indirect live wire gripping tool is always urged in the direction of separation, and the separation distance is changed by operating the operation part provided on the other end side of the indirect live wire gripping tool. If the tips of the pair of indirect live tool tools are inserted into the joint portion of the cover member of the cover and then the operation portion is released, the pair of cover members can be opened. A force for biasing in the direction is applied, and the opening operation is facilitated.

  In addition, the rib of the flat plate portion is formed on the back surface so that the protrusion amount gradually increases toward the mounting portion, thereby reinforcing the flat plate portion without obstructing the insertion of the flat plate portion into the joint portion of the pair of cover members. In addition, it is possible to compensate for the opening of the joint portion of the cover member after the flat plate portion is inserted.

The indirect hot wire working tool which concerns on this invention is shown, and it is a side view which shows the state in which a pair of indirect hot wire tip tool was attached to the holding part of the insulated Yatco which is an indirect hot wire holding tool. It is a figure which shows an indirect hot wire holding | grip tool, (a) is the whole figure, (b) is an enlarged view of the front-end | tip part. It is a side view in the state where a pair of indirect hot wire tip tools were closed. It is a top view of a pair of indirect hot wire tip tool, (a) is a top view of the indirect hot wire tip tool 5, (b) is a top view of the indirect hot wire tip tool 4. It is explanatory drawing explaining opening operation of a high voltage | pressure cover, (a) is the whole figure, (b) is a figure which shows the state just before inserting the indirect hot wire tip tool which makes a pair of an indirect hot wire working tool into a cover. It is. It is a figure which shows the state which opened the high voltage | pressure cover using the indirect hot wire work tool which concerns on this invention. It is a figure explaining closing operation of a high voltage | pressure cover, (a) is the whole figure, (b) is a figure which shows the state which pinches | interposes the cover member which makes a pair with the indirect hot wire tip tool which makes a pair of indirect hot wire work tools. It is.

  Embodiments of the present invention will be described below with reference to the drawings.

  In FIG. 1, the structural example of the indirect hot wire working tool which concerns on this invention is shown. This indirect hot wire working tool 1 includes an indirect live wire gripping tool 3 having a pair of gripping portions 2a and 2b, and a pair of indirect live wire attachments attached to the gripping portions 2a and 2b that form a pair of the indirect live wire gripping tool 3. It is comprised from the wire tip tools 4 and 5.

  As the indirect hot wire gripping tool 3, a general insulating jacket as shown in FIG. 2 is used. This indirect hot wire gripping tool (insulating Yachko) 3 is known per se and has a pair of operating parts 15 (15a, 15b) on the front end side of the main shaft 20, and is provided at the front end of the operating part 15. The pair of gripping portions 2 a and 2 b are opened and closed by an operation portion 6 provided on the proximal end side of the main shaft 20.

  The operation unit 6 is configured by a handle 7 that is rotatably attached to the proximal end side of the main shaft 20, and has a structure in which the handle 7 is connected to one operating unit 15 a by a connecting rod 8. The handle 7 is always urged in the direction of spreading by a coil spring 9 attached to the support shaft 7a, and the connecting rod 8 is pushed and narrowed against the urging force of the coil spring 9 (handle). 7 is rotated so as to be close to the main shaft 20), and the base end portion of one operation portion 15 a is pulled. The one actuating portion 15 a is rotatably attached to the other actuating portion 15 b by a support shaft 10. The handle 7 is gripped with the main shaft 20, and the handle 7 rotates against the coil spring 9. Then, the end of the support shaft 10 opposite to the grip portion 2a is pulled by the connecting rod 8, and the grip portion 2a moves toward and contacts the grip portion 2b of the other operating portion 15b. It is like that.

When the handle 7 is released from the handle 7 and the handle 7 is returned to the original position by the spring force of the coil spring 9, one end of the actuating portion 15a opposite to the holding portion 2a with respect to the support shaft 10 is located. The gripping portion 2a is pushed out by the connecting rod 8 and is separated from the gripping portion 2b of the other operating portion 15b.
Therefore, the pair of grip portions 2a and 2b are opened and closed by an operation of gripping the handle 7 and an operation of releasing the grip.
The pair of gripping portions 2a and 2b are formed with engagement holes 12a and 12b for attaching the indirect live wire tip tools 4 and 5 described below.

  Each of the indirect hot wire tip tools attached to the pair of gripping portions 2a and 2b is formed of a metal such as stainless steel, and is formed in a long and flat plate shape as shown in FIGS. The flat plate portions 21 and 31, the tapered tip portions 22 and 32 formed on one end side in the longitudinal direction of the flat plate portions 21 and 31, and the other end side in the longitudinal direction of the flat plate portions 21 and 31. It has attachment parts 23 and 33 attached to the grips 2a and 2b.

  In each of the indirect live wire tip tools 4 and 5, the tip portions 22 and 32 are provided with a taper on the back surface opposite to the side facing the other indirect live wire tip tool, and approach the tip. It is formed in a taper that gradually reduces the thickness. This taper is formed with a width of about 0.5 cm from the tip.

  The attachment parts 23 and 33 are configured to be attached to the holding parts 2a and 2b of the indirect hot wire holding tool (insulated Yatco) 3 described above, and are formed integrally with the flat plate parts 21 and 31. Insertion portions 23b and 33b formed so that the gripping portions 2a and 2b can be inserted are formed in the attachment portion main bodies 23a and 33a. Further, the attachment main bodies 23a and 33a are provided with engaging means for engaging with the grip portions 2a and 2b inserted into the insertion portions 23b and 33b. This engaging means is inserted into the pin insertion holes 23d and 33d formed in the boss-shaped pin receiving portions 23c and 33c integrally formed with the attachment portion main bodies 23a and 33a so as to be displaceable from the outside, and the tip portion is the insertion portion. It is comprised from the engagement pins 23e and 33e formed in the length which can protrude in 23b and 33b, and the tension | pulling coil springs 23f and 33f accommodated in the pin insertion holes 23d and 33d. The tension coil springs 23f and 33f are inserted into the pin insertion holes 23d and 33d so that the engagement pins 23e and 33e pass through the center. The tension coil springs 23f and 33f allow the engagement pin 23e to pass therethrough. 33e are always brought into contact with the tips of the pin receiving portions 23c and 33c, and the tips of the engaging pins 23c and 33c are projected into the insertion portions 23b and 33b.

  Therefore, in order to attach the indirect live wire tip tools 4 and 5 to the gripping portions 2a and 2b of the indirect live wire gripping tool (insulating hat) 3, the holding pins 23e and 33e are held against the coil springs 23f and 33f. After pulling up and inserting the gripping portions 2a, 2b of the indirect live-line gripping tool (insulated Yatco) 3 into the insertion portions 23b, 33b, the engagement pins 23e, 33e are released, whereby the tip portions of the engagement pins 23e, 33e Is fixed by being inserted and engaged in engagement holes 12a and 12b formed in the grip portions 2a and 2b. In addition, in order to remove the indirect live wire tip tools 4 and 5 from the indirect live wire gripping tool (insulated Yatco) 3, an operation opposite to the above-described mounting operation may be performed.

  Further, as shown in FIG. 4, the attachment main bodies 23a and 33a have a predetermined direction in the insertion direction of the gripping portions 2a and 2b from the opening end surfaces of the insertion portions 23b and 33b on both sides of the pin receiving portions 23c and 33c. The slits 23g and 33g extending in length are formed. When the attachment portions 23 and 33 are attached to the grip portions 2a and 2b by the slits 23g and 33g, the reinforcing protrusions formed on the back surfaces of the grip portions 2a and 2b. In addition to preventing interference with the strip, it has a guide function when attached to the grip portions 2a and 2b.

  Further, ribs 24 and 34 are integrally formed on the back surfaces of the flat plate portions 21 and 31 with a predetermined distance from the tip portions 22 and 32. The ribs 24 and 34 are provided from the middle of the back surface to the attachment portions 23 and 33. The protrusions from the flat plate portions 21 and 31 increase toward the attachment portions 23 and 33, and the lateral width is increased. It is gradually formed larger.

  One indirect live wire tip tool 4 and the other indirect live wire tip tool 5 have the same shape except for the lengths of the flat plate portions 21 and 31. The length in the longitudinal direction is 3 to 4 cm, and the other indirect hot wire tip tool 5 is longer in the length direction of the flat plate portion 31 by α cm (for example, 0.5 cm) than the one indirect hot wire tip tool. (3 + α to 4 + αcm).

  Therefore, when these indirect live wire tip tools 4 and 5 are attached to the gripping portions 2a and 2b of the indirect live wire gripping tool (insulated YATCO) 3, and the operation portion 6 is operated to overlap the flat plate portions 21 and 31 with each other. The tip portions 22 and 32 of the respective indirect hot wire tip tools 4 and 5 are shifted back and forth in the longitudinal direction of the flat plate portions 21 and 31 (see FIG. 3), and the tip portion 32 of the indirect live wire tip tool 5 is It is in the state which protruded (alpha) cm from the front-end | tip part 22 of the indirect hot wire front-end tool 4. FIG.

Next, the opening operation and closing operation of the high-pressure cover 40 will be described using the above-described indirect hot wire working tool 1 in the above configuration.
5 and 6, a high-voltage cover 40 (in this example, a high-voltage connector cover) is connected to a pair of cover members 40a and 40b by an elastic hinge 41 so that the cover members 40a and 40b can be opened and closed freely along the longitudinal direction. Has been. Further, one cover member 40b is provided with a projecting piece 42 for gripping with an indirect hot wire gripping tool (insulating Ytco). Further, on the front side along the longitudinal direction, in the vicinity of both ends, a hook portion 44a connected to one cover member 40a and a hook portion connected to the other cover member 40b and engageable with the hook portion 44a. A mounting hook portion 44 constituted by 44b is provided.

  In order to open the high-voltage cover 40 in a state where the high-voltage cover 40 is attached to the electric wire and the pair of cover members 40a and 40b are closed, first, two indirect hot wire gripping tools (insulating YATCO) are used. 3 is prepared, and the above-described indirect live wire tip tools 4 and 5 are attached to a pair of gripping portions 2a and 2b of one indirect live wire gripping tool (insulated Yatco) 3. After that, as shown in FIG. 5, the projecting piece 42 of the high-pressure cover 40 is gripped by the gripping portions 2a and 2b of the indirect live wire gripping tool (insulated Yachko) 3 to which the indirect live wire tip tools 4 and 5 are not attached. Then, the high pressure cover 40 is fixed so that it does not move, and in that state, the indirect live wire gripping tool (insulated YATCO) 3 to which the indirect live wire tip tools 4 and 5 are attached is approached to the high pressure cover 40 and the operation unit 6 is gripped. The flat plate portions 21 and 31 of the pair of indirect hot wire end tools 4 and 5 are overlapped with each other. In this state, the tip portion 32 of one of the indirect live wire tip tools 5 (the indirect live wire tip tool having the longer flat plate portion) attached to the grip portions 2a and 2b is used as the joint portion of the cover members 30a and 30b. After that, it is pushed into the high-pressure cover 40 as it is, and the tip 22 of the other indirect hot wire tip tool 4 is also inserted into the joint.

At this time, the front end portions 22 and 32 of the indirect hot wire front end tools 4 and 5 are shifted back and forth with respect to the longitudinal direction of the flat plate portions 21 and 31, and the front end portions 22 and 32 are tapered. Therefore, the insertion of the tip portion 32 of the indirect hot wire tip tool 5 is facilitated, and the tip portion 22 of the indirect live wire tip tool 4 has already been inserted into the joint portion of the indirect live wire tip tool 5. Since the gap is slightly opened, it can be easily inserted into the joint.
Note that the ribs 24 and 34 formed on the back surfaces of the flat plate portions 21 and 31 are formed so that the protruding amount gradually increases toward the mounting portion 23.33, and thus the pair of cover members 40a and 40b. The insertion of the flat plate portions 21 and 31 into the joint portions of the cover members 40a and 40b is compensated for after the flat plate portions 21 and 31 are inserted.

  Then, after the flat plate portions 21 and 31 of the pair of indirect hot wire end tools 4 and 5 are sufficiently inserted into the high-pressure cover 40, the gripping state of the operation portion 6 is released, and the indirect hot wire gripping tool (insulating YTCO) is released. ) The indirect hot wire tip tools 4 and 5 that make a pair are separated using the opening force of the gripping portions 2a and 2b. Then, the engagement state of the attachment hook portion 44 (the hook portions 44a and 44b) of the high pressure cover 40 is released, and the cover members 40a and 40b of the high pressure cover 40 rotate around the elastic hinge 41 as shown in FIG. Open by moving.

  Next, in order to close the high-pressure cover 40, as shown in FIG. 7, by the gripping portions 2a and 2b of the indirect live wire gripping tool (insulated Yatco) 3 to which the indirect live wire tip tools 4 and 5 are not attached, The projecting piece 42 of the high-pressure cover 40 is gripped and fixed so that the high-pressure cover 40 does not move, and then the indirect live wire gripping tool (insulated YATCO) 3 to which the indirect live wire tip tools 4 and 5 are attached is used. The hook portions 44a and 44b of the pair of cover members 40a and 40b of the high-pressure cover 40 are sandwiched from outside by the flat plate portions 21 and 31 of the indirect live wire tip tools 4 and 5 attached to the gripping portions 2a and 2b. Since the flat plate portions 21 and 31 of the pair of indirect hot wire end tools 4 and 5 are formed long, in a state where the operation portions 15a and 15b of the indirect hot wire gripping tool 3 are opened, the pair of indirect hot wire end tools 4 and 5 is formed. The distance between the tip portions 22 and 32 of the wire tip tools 4 and 5 is sufficiently larger than the distance between the grip portions 2a and 2b, and a pair of cover members 40a and 40b is used without using a cover presser. Can be closed.

  Therefore, in the opening operation of the high pressure cover 40, when the indirect hot wire tip tools 4 and 5 are inserted into the joint portion of the high pressure cover 40, accurate alignment of the indirect hot wire tip tools 4 and 5 becomes unnecessary. Since it is not necessary to twist the indirect live wire tip tools 4 and 5 to disengage the attachment hook portion 44, the work does not depend on the skill level of the operator, and the work efficiency can be improved. Further, when the high-pressure cover 40 is closed, the same indirect hot wire tip tools 4 and 5 can be used, and there is no need to separately replace the tool.

DESCRIPTION OF SYMBOLS 1 Indirect hot wire work tool 2a, 2b Gripping part 3 Indirect hot wire gripping tool (insulation YATCO)
4,5 Indirect hot wire tip tool 21, 31 Flat plate portion 22, 32 Tip portion 23, 33 Mounting portion 24, 34 Rib

Claims (4)

An indirect live wire working tool configured by attaching a pair of indirect live wire tip tools to a pair of gripping portions provided on one end side of the indirect live wire gripping tool,
Each said indirect hot wire tip tool is
A long and flat plate portion,
A tapered tip formed on one end of the flat plate in the longitudinal direction;
A mounting portion provided on the other end side in the longitudinal direction of the flat plate portion and attached to the gripping portion;
The paired indirect hot wire tip tools are attached to the paired gripping portions and overlapped with each other of the flat plate portions, and the tip portions of the indirect tool are shifted back and forth in the longitudinal direction of the flat plate portion. Indirect hot wire work tool characterized by.   By making the longitudinal dimension of the flat plate portion of the one indirect live wire tip tool longer than the longitudinal dimension of the flat plate portion of the other indirect live wire tip tool, the respective tip portions are in the longitudinal direction of the flat plate portion. The indirect hot wire working tool according to claim 1, wherein the tool is shifted forward and backward.   The indirect hot-wire work tool according to claim 1 or 2, wherein a rib whose protrusion amount gradually increases toward the attachment portion is formed on the back surface of the flat plate portion.   The gripping part forming a pair of the indirect live wire gripping tool is always urged in the direction of separating, and the separation distance can be increased by operating the operation part provided on the other end side of the indirect live wire gripping tool. The indirect hot wire working tool according to any one of claims 1 to 3, wherein the tool is changed.

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