JP5285454B2 - Fin stripping tool and fin stripping method - Google Patents

Description

  The present invention relates to a fin stripping tool and a fin stripping method for stripping off the fins of a snow-covered insulated wire.

  The electricity generated at the power station of the electric utility company and transformed at the substation is supplied to consumers through a high-voltage line stretched around a power pole. A high voltage pull-down line is connected to the high voltage line, and is connected to a transformer (also called a pole transformer) through a high voltage cutout. Then, electricity is transformed by a transformer into a voltage (for example, 6600V) when it is transmitted to a voltage (for example, 100V or 200V) used by the consumer, and is supplied to the consumer through a lead-in line.

  A polyethylene insulated wire (hereinafter referred to as an insulated wire) is used for the high-voltage wire, a copper or aluminum core wire is used for the conductor, and a polyethylene coating is used for the insulator. There are various types of such insulated wires, and one of them is a snow-resistant insulated wire.

  When a normal insulated wire is used in an area where the amount of snowfall is large, snow accumulates on the insulated wire, and the accumulated snow wraps around to the bottom of the wire along the outer periphery of the covering. And it will be in the state where the whole insulated wire was covered with snow, and it becomes easier to accumulate snow on the snow which covered the insulated wire. As a result, an enormous amount of snow is piled up on the insulated wire, and the situation of the breakage of the insulated wire or the collapse of the utility pole over which the insulated wire is stretched occurs due to the load of the snow or the wind pressure.

  In view of this, in the difficult-to-snow-type insulated electric wire, rib-like fins are erected along the bus bar on the outer periphery of the coating. Thereby, it is possible to prevent the snow from flowing into the portion below the fin, and the snow accumulated on the portion above the fin of the insulated wire falls to the ground when reaching a certain amount. Therefore, it is possible to prevent an enormous amount of snow from accumulating on the insulated wire, and to prevent disconnection or collapse of the utility pole due to snow load or wind pressure load.

  By the way, in order to supply electricity to consumers through the high-voltage line as described above, it is necessary to carry out a distribution line work for connecting the high-voltage down line to the high-voltage line. However, if electricity is cut off during construction, a power outage will occur, causing inconvenience to consumers. Therefore, the distribution line work is performed by a hot wire method of working in a state where electricity flows (energized) to the electric wires. Thereby, since a power failure does not occur even during construction, the convenience for consumers is not reduced.

  Conventionally, the direct hot wire method has been the mainstream of the above hot wire method. In the direct hot wire method, an operator works by directly touching an energized high voltage line. For this reason, there is a high risk that an electric shock disaster will occur. Therefore, in order to ensure safety, the worker wears protective equipment (for example, protective gloves) that has been subjected to insulation processing to prevent electric shock, and attaches the protective equipment to the charging part of the high-voltage line.

  However, even if a protective equipment is worn and a protective equipment is worn, the occurrence of a disaster cannot always be avoided. For example, when the protective equipment or the protective equipment is damaged, the operator's risk increases. For this reason, the indirect hot wire method is becoming mainstream in recent years instead of the direct hot wire method.

  In the indirect hot wire method, an operator uses an operation rod dedicated to the indirect hot wire method, which has been subjected to insulation processing, to work without directly touching the high voltage wire from outside the proximity range of the insulated wire (high voltage wire). For this reason, the risk of the electric shock disaster of an operator can be reduced extremely. In addition, this eliminates the need for the operator to wear protective equipment, thus reducing the burden on the user and eliminating the need for wearing protective equipment on the charging unit, thereby reducing work time. It becomes possible.

  As an operation rod dedicated to the indirect hot-wire method, for example, Patent Document 1 discloses an openable / closable gripping tool for gripping an object to be gripped, and a gripping tool at the tip for positioning the gripping tool at a working position. An indirect hot-line gripping tool is disclosed that includes an insulating operating rod and an operating portion that is provided with an operating lever that opens and closes the gripper on the proximal end side of the insulating operating rod. By using such a tool, it is possible to work from outside the proximity range of the high-voltage line, and it is possible to obtain the advantages described above.

  Further, for example, Patent Document 2 has an operation shaft, a frame receiver that rotates in conjunction with the operation shaft, and an electric wire frame that is swingably mounted on a knob of the frame receiver. An electric wire covering peeling tool comprising an electric wire insertion hole in which a spiral protrusion is formed and a blade body that protrudes into the electric wire insertion hole and peels and removes the electric wire covering layer is disclosed. According to this, it becomes possible to strip off the coating of the insulated wire in the indirect hot wire method.

JP-A-11-205929 JP-A-8-0163740

  When carrying out the distribution line work for connecting the high-voltage pull-down line to the above-described high-voltage line, strip off the coating of the high-voltage line using a tool such as Patent Document 2, and expose the core wire of the exposed high-voltage line and the end covering in advance. The core wire of the high-pressure pull-down wire exposed by peeling off is connected using a connector. Then, an insulating tape is wound around the connection portion and the periphery of the connection portion to prevent water and the like from entering the connection portion.

  However, if the above high-voltage wire is a hard-to-snow-type insulated wire, if a fin remains around the connection part when winding the insulation tape, a gap forms between the insulation tape and the insulated wire. The As a result, there is a risk that water may enter from the gap, so that it is necessary to peel off the fin before winding the insulating tape so that the gap is not formed.

  However, a tool suitable for the work of stripping off the fin has not been developed, and at present, the fin is stripped off by an electric knife. In particular, in the case of the indirect hot wire method, a knife tool is attached to the tip of the operation rod described above, and the work for stripping fins is performed using this. Therefore, the workability is significantly lower than other work that can use a tool dedicated to the indirect hot wire method.

  In particular, the work for peeling off the fin has a very small area of the part to be peeled off compared with the work for peeling off the entire covering of the insulated wire. For this reason, even if it is slight vibration of the electric wire by wind etc., the position of the fin used as the object to strip off tends to shake. In addition, the direction of the fin varies depending on the facility location and the facility situation, and the insulated wire may be twisted. In this case, the worker must work while frequently changing the orientation of the tool and his / her posture. Therefore, skill is required for the work of stripping off the fins, and whether the work result is good or bad is easily affected by the skill of the worker.

  In view of such problems, the present invention, particularly when using the indirect hot wire method, easily and accurately strips the fins provided on the coating of the hard-to-fall snow insulated wire without depending on the skill of the worker, An object of the present invention is to provide a fin stripping tool and a fin stripping method capable of improving workability.

In order to solve the above problems, a representative configuration of a fin stripping tool according to the present invention is a core wire, a coating covering the core wire, and a rib-like fin standing on the outer periphery of the coating along the generatrix, A fin stripping tool for stripping fins of a hard-to-snow-type insulated wire provided with a first sandwiching member and a second sandwiching member for sandwiching the insulated wire, and a first sandwiching member connected to the first sandwiching member 1 holding member, 2nd holding member connected with the 2nd holding member, the 1st holding member, and the 2nd holding member, and attach the 1st holding member and the 2nd holding member in the direction which holds an insulated electric wire. And at least one of the first clamping member and the second clamping member includes a sliding surface that abuts the outer periphery of the coating, a groove portion that is provided on the sliding surface and through which fins can be inserted, and a groove portion and arranged cutting blades so that the cutting edge is exposed, was closed within first gripping Holding the timber and a second gripping member, by a distance between the first gripping member and the second gripping member narrower than the predetermined distance, characterized in that the first clamping member and the second clamping member is disengaged.

  According to the above configuration, the insulated wire is sandwiched between the first sandwiching member and the second sandwiching member, and the fins of the sandwiched insulated wire are inserted into the groove provided in at least one of the first sandwiching member or the second sandwiching member. . And since the cutting blade arrange | positioned so that a blade edge | tip may be exposed in a groove part, only a fin is stripped off by a cutting blade by moving the said fin stripping tool along an insulated wire. Thereby, it is possible to easily and accurately strip only the fins by a simple operation of moving the fin stripping tool along the insulated wire without depending on the skill of the operator. As a result, the workability of fin stripping work in the indirect hot wire method can be improved.

Further, as described above, the fin stripping tool includes the first gripping member connected to the first clamping member, the second gripping member connected to the second clamping member, the first clamping member, and the second gripping member. And an elastic member that urges the first holding member and the second holding member in a direction to hold the insulated wire, and holds the first holding member and the second holding member, By narrowing the gap between the second gripping member and the predetermined gap, the first clamping member and the second clamping member are separated from each other .

As in this configuration, when not holding the first gripping member and the second gripping member, i.e. in the state where the release of these, the second clamping member comprises a first clamping member and the abutting direction by an elastic member (insulated wires the by being biased in a direction) for sandwiching, state and ing to the first clamping member and the second clamping member is in contact. Then, when the first gripping member and the second gripping member are gripped so as to reduce the distance between them using an operation tool such as a Yatsuko, the first sandwiching member and the second sandwiching member are separated from each other (separately) Insulated wires can be placed in the space. When the first holding member and the second holding member are released after the insulated wire is arranged, the second holding member is biased by the elastic member, and the insulated wire is held by the first holding member and the second holding member.

  Further, as described above, when the first gripping member and the second gripping member are released after the insulated wire is arranged, the first sandwiching member and the second sandwiching member sandwich the insulated wire by the biasing of the elastic member. The fin stripping tool is attached to the insulated wire. Therefore, it is not necessary to fix the fin stripping tool with an operation tool or the like after sandwiching the insulated wire. As a result, the fin stripping work can be performed by only one worker, and the cost required for artificial work can be reduced.

  The fin stripping tool may further include a pulling member for pulling the tool along the insulated wire.

  According to the above configuration, the traction member can be gripped by using an operation tool such as a Yatco, or a hook-shaped operation tool can be hooked on the traction member. The stripping tool can be moved along the insulated wire. Thereby, since the said fin removal tool can be moved without applying force to itself, it becomes possible to prevent damage to the tool by this force. Moreover, since the said fin stripping tool can be moved only by pulling a pulling member, operativity can be improved and work efficiency can be improved.

  The fin stripping tool further includes a first connecting member that connects the first holding member and the first holding member, and a second connecting member that connects the second holding member and the second holding member, The first gripping member may be rotatably attached to a shaft erected on the first connecting member, and the second gripping member may be rotatably attached to a shaft erected on the second connecting member.

  With this configuration, the operator can change the angle of the operation tool to a desired angle without changing the installation position of the fin stripping tool. Therefore, the operator can perform the work by adjusting the operation tool to an angle at which the operator can easily work, thereby reducing the burden on the operator and improving the work efficiency.

  In addition, even when the direction of the fin changes, such as when the insulated wire is twisted, the first gripping member and the second gripping member rotate following the fin stripping tool, so that the operator can use the orientation of the operation tool. It is possible to work without frequently changing his or her posture.

  At least one of the first clamping member or the second clamping member is provided on the surface side that accommodates the peeled fin and the surface that does not face the insulated wire of the cutting blade, and connects the groove and the accommodation space. It is preferable to further include a gap and a covering member that can be attached to and detached from each of the first holding member and the second holding member and covers the accommodation space.

  According to such a configuration, the fin peeled off by the cutting blade enters the accommodation space through the gap. Since the storage space is covered with the covering member, the peeled fins are stored in the storage space and do not go out of the storage space. Therefore, the stripped fins can be prevented from falling to the ground, and since the fins are not scattered on the ground, it is possible to reduce the trouble of cleaning after work.

  Further, since the covering member is detachable from the first holding member and the second holding member, when the inside of the accommodation space is filled with the peeled off fin, the covering member is removed, and the accumulated fin is easily removed and collected. It becomes possible to do.

  The sliding surface may be concave. Thereby, since the covering of the insulated wire clamped by the first clamping member and the second clamping member comes into contact with the concave sliding surfaces of these, the insulated wire can be clamped more reliably.

In order to solve the above-mentioned problem, a representative configuration of a fin stripping method according to the present invention is a fin stripping method for stripping a fin of a coating of a hard-to-wear type insulated wire, which includes a cutting blade And a groove part in which a cutting edge of the cutting blade is exposed to the inside, a first holding member and a second holding member for holding the insulated wire, a first holding member connected to the first holding member, and a second A second gripping member coupled to the sandwiching member; and an elastic member connected to the first sandwiching member and the second gripping member and biasing the first sandwiching member and the second sandwiching member in a direction to sandwich the insulated wire. The first holding member and the second holding member are held by holding the first holding member and the second holding member using the fin peeling tool provided, and by narrowing the interval between the first holding member and the second holding member from a predetermined interval. is separated and in which, the first holding member and the second clamping member The edge wire is sandwiched by inserting the fins in the groove, and wherein the stripping fins by cutting edge by moving the fins stripping tool along the insulated wire.

  The components based on the technical idea of the above-described fin stripping tool and the description thereof can also be applied to the fin stripping method.

  According to the present invention, a fin stripping tool and a fin capable of easily and accurately stripping off the fins provided on the coating of the hard-to-snow type insulated wire without depending on the skill of the worker and improving workability. A stripping method can be provided.

It is a figure showing the field where distribution line construction is performed. It is a figure which shows the detail of the hard-to-fall type insulated wire as a high voltage line. It is a figure which shows the detail of a connection part. It is a figure which shows the fin stripping tool concerning this embodiment. It is a figure which shows the fin stripping tool concerning this embodiment. It is the elements on larger scale of FIG.5 (b). It is a figure which shows arrangement | positioning of a cutting blade, and peeling of a fin. It is a figure which shows arrangement | positioning of a cutting blade, and peeling of a fin. It is a figure explaining a 1st holding member and a 2nd holding member. It is a figure which shows operation | movement of the said tool. It is a figure which shows the other example of the position of the fin of an insulated wire. It is a figure which shows rotation operation | movement of a 1st holding member and a 2nd holding member.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiment are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

  FIG. 1 is a diagram illustrating a site where distribution line construction is performed. As shown in FIG. 1, the utility pole 100 is stretched with a hard-to-snow type insulated wire 110 as a high-voltage line, and is generated at a power plant (not shown) or the like by the insulated wire 110 (high-voltage line). Electricity transformed at a substation (not shown) is transmitted. And the electricity which flows through the insulated wire 110 (high voltage line) is connected to the high voltage line at the connecting portion 140 and is pulled down, and a high voltage pulling cross-linked polyethylene insulated wire (PDC: Plane transformer Drop wire Crosslinked polyethylene, hereinafter referred to as the PD line 120). The power is transmitted to the transformer 130. The transformer 130 is mounted on the utility pole 100, and the transformer 130 transforms a voltage when the power is transmitted, for example 6600V, to a voltage used by a consumer, for example 100V or 200V.

  FIG. 2 is a diagram showing details of the hard-to-snow type insulated electric wire 110 as a high-voltage line. FIG. 2A is a side view of the insulated wire 110, and FIG. 2B is a cross-sectional view of the insulated wire 110. As shown in FIGS. 2A and 2B, the insulated wire 110 (high voltage wire) is composed of a core wire 112 that is a conductor and a coating 114 that is an insulator. The core wire 112 is a winding wire with a plurality of conductive wires, and is covered with a coating 114. As the core wire 112, copper or aluminum can be preferably used. In addition, although the insulated wire shown in FIG. 2 is a core wire, it is not limited to this, A core wire may be a single wire.

  The covering 114 is made of polyethylene, and includes a rib-like fin 114a standing on the outer periphery of the covering 114 along the generatrix. Thereby, it is possible to prevent snow from wrapping around the fin 114a during snowfall. And since the snow accumulated on the part above the fin 114a falls to the ground when it reaches a certain amount, excessive snow accumulation on the insulated wire 110 (high voltage line) is prevented, and the load of snow or wind pressure Therefore, it is possible to prevent disconnection of the insulated wire 110 and collapse of the utility pole 100.

  In addition, although illustration is abbreviate | omitted, the PD wire 120 used for a high voltage | pressure pull-down line is also comprised from the core wire and the coating | cover similarly to the insulated wire 110 used for the high voltage wire mentioned above. However, since the PD wire 120 is stretched in the vertical direction when connected to the insulated wire 110 (high voltage wire), damage due to snow accumulation is unlikely to occur. Therefore, no fin is provided on the coating of the PD line 120.

  FIG. 3 is a diagram illustrating details of the connection unit 140. When connecting the insulated wire 110 (high voltage wire) and the PD wire 120 at the connecting portion 140, first, as shown in FIG. 3 (a), the coating 114 of the insulated wire 110 is peeled off to expose the core wire 112. The coating 124 at the end of the PD wire 120 connected to the insulated wire 110 is peeled off to expose the core wire 122.

  Then, as shown in FIG. 3B, the core wire 112 of the insulated wire 110 (high voltage wire) and the core wire 122 of the PD wire 120 are connected using the connector 150. FIG. 3C is a diagram showing details of the connector 150. As shown in FIG. 3C, the connector 150 includes a first member 152, a second member 154, and a nut 156. The core wire 112 of the insulated wire 110 is inserted into the insertion hole 150a of the bolt 152, and the insertion hole 150b. The core wire 122 of the PD wire 120 can be inserted into the wire.

  Thereafter, the connector cover 158 is put on the connector 150 (connection portion) and the exposed portions (around the connection portion) of the insulated wires 110 (high voltage line) and the core wires 112 and 122 of the PD wire 120, and both ends of the connector cover 158 are covered. Insulating tape 160 is wound around. Thereby, the connection part 140 is formed as shown in FIG.

  However, if the connection portion 140 is formed without peeling off the fin 114a of the insulated wire 110 as described above, the fin 114a of the insulated wire 110 around the connection portion causes the gap between the insulating tape 160 and the covering 114 (insulated wire) as shown in FIG. A gap 162 shown in d) is generated. Thereby, the sealing property of the connection part 140 falls and water etc. may infiltrate from this clearance gap 162. The intrusion of water or the like into the connecting portion 140 causes corrosion of the core wires 112 and 122, and if the core wires 112 and 122 are corroded, there is a risk of disconnection. For this reason, it is necessary to peel off the fin 114a of the insulated wire 110 before forming the connecting portion 140 in order to prevent the gap 162 from being generated. However, at present, skill is required for the work of peeling off the fin 114a, and the quality of the work result is easily affected by the skill of the worker.

  Therefore, in the following embodiment, the fin 114a can be easily and accurately peeled off to improve workability without depending on the skill of the worker, and the fin 114a provided on the covering 114 of the hard-to-snow type insulated wire 110 can be removed. An object is to provide a stripping tool.

  FIG. 4 and FIG. 5 are diagrams showing the fin stripping tool according to the present embodiment. FIG. 4 is a front perspective view of the fin stripping tool, FIG. 5 (a) is a rear view of the fin stripping tool, and FIG. 5 (b) is a side view of the fin stripping tool. In FIGS. 5 (a) and 5 (b), the drawing of the traction member is omitted for easy understanding.

  As shown in FIGS. 4 and 5, the fin stripping tool 200 (hereinafter simply referred to as the tool 200) includes a first clamping member 210, a second clamping member 230, a first gripping member 260, and a second The holding member 262, the elastic member 264, the pulling member 266, the first connecting member 270, and the second connecting member 280 are configured.

  The first clamping member 210 and the second clamping member 230 are members for clamping the insulated wire 110. Since the surface having the sliding surface 212 described later of the first clamping member 210 and the surface having the sliding surface 232 described later of the second clamping member 230 come into contact with each other, the insulated wire 110 can be clamped. .

  The first clamping member 210 has a sliding surface 212, a groove portion 214, a cutting blade 216, an accommodation space 218, a gap 220, a covering member 222, and a fastener 224. The second holding member 230 includes a sliding surface 232, a groove 234, a cutting blade 236, a receiving space 238, a gap 240, a covering member 242, and a fastener 244. Hereinafter, the details of the above-described members of the first clamping member 210 and the second clamping member 230 will be described.

  The sliding surfaces 212 and 232 are in contact with the outer periphery of the covering 114 of the insulated wire 110 (high voltage wire). Such sliding surfaces 212 and 232 are concave. As a result, the area 114 where the covering 114 of the insulated wire 110 sandwiched between the first sandwiching member 210 and the second sandwiching member 230 abuts against the sliding surfaces 212 and 232 is increased, and the insulated wire 110 can be more securely sandwiched. It becomes possible.

  In the present embodiment, the sliding surfaces 212 and 232 have a circular locus (see FIG. 5B), but the present invention is not limited to this. It is sufficient that the sliding surfaces 212 and 232 have a concave shape. For example, the locus may be a U-shape.

  The groove part 214 is provided on the sliding surface 212 and the groove part 234 is provided on the sliding surface 232, and each is inserted through the fin 114a. Thereby, it will be in the state which fin 114a fitted to groove parts 214 and 234, and rotation on sliding surfaces 212 and 232 of insulated electric wire 110 can be prevented. Therefore, it is possible to accurately peel only the fin 114a of the insulated wire 110.

  The heights of the grooves 214 and 234 are configured to be higher than the height of the fin 114a to be peeled off, or substantially equal to the height of the fin 114a. The widths of the grooves 214 and 234 are configured so as to be wider than the width of the fin 114a to be peeled off or substantially equal to the width of the fin 114a. This is because if the height of the grooves 214 and 234 is lower than the height of the fin 114a, the fin 114a is left unseparated, and if the width of the grooves 214 and 234 is smaller than the width of the fin 114a, the fin 114a is This is because it becomes impossible to pass through 214 and 234.

  FIG. 6 is a partially enlarged view of FIG. As described above, when the surface having the sliding surface 212 of the first clamping member 210 and the surface having the sliding surface 232 of the second clamping member come into contact with each other, the sliding surfaces 212 and 232 cause FIG. A space 250 (shown by hatching in FIG. 6) for sandwiching the insulated wire 110 is formed.

The height h of the space 250 is used as a high-voltage cable, or of the insulated wire 110 which is assumed to be used, shorter than the diameter R ₁ of the thinnest insulated wire 110, or such diameter R It is set to be approximately equal to ₁ . Therefore, the depth of the first clamping member 210 and the second clamping member 230 from the surface having the sliding surfaces 212 and 232 to the sliding surfaces 212 and 232 is shorter than the radius of the thinnest insulated wire 110. Or configured to be substantially equal to such a radius. As a result, even if the insulated wire 110 that is the target for stripping off the fin 114a is the thinnest insulated wire 110, the insulated wire 110 can be reliably clamped as shown in FIG. 6B.

  Note that the height h of the space 250 formed by the sliding surfaces 212 and 232 is longer than the diameter of the thinnest insulated wire 110, that is, the depth of the sliding surfaces 212 and 232 is longer than the radius of the insulated wire 110. That is not preferred. In this case, as shown in FIG. 6C, the fin 114a of the insulated wire 110 is not properly inserted into the groove portions 214 and 234, and the fin 114a cannot be accurately removed.

Further, when the sliding surfaces 212 and 232 draw an arc-shaped trajectory as in this embodiment, the curvature of the space 250 formed by the sliding surface, that is, the curvature X of the arc-shaped trajectory is used as a high-pressure line. Alternatively, among the insulated wires 110 assumed to be used, it is set to be lower than the curvature X ₁ of the outer periphery of the thickest insulated wire 110 or to be substantially equal to the curvature X ₁ . Thereby, as shown in FIG.6 (d), it becomes possible to clamp the thickest insulated wire 110 reliably.

  When the curvature of the space 250 formed by the sliding surfaces 212 and 232 is higher than the curvature of the outer periphery of the thickest insulated wire 110, the thickest insulated wire 110 is placed in the space 250 as shown in FIG. As a result, the insulated wire 110 cannot be securely clamped. As a result, the fin 114a cannot be inserted into the grooves 214 and 234, and the fin 114a cannot be reliably peeled off.

  7 and 8 are diagrams showing the arrangement of the cutting blade 216 and the removal of the fin 114a. Since the configurations of the first clamping member 210 and the second clamping member 230 are the same, the first clamping member 210 is illustrated and described in FIGS. 7A, 7B, and 8C. 2 Symbols of members belonging to the sandwiching member 230 are added.

  As shown in FIG. 7A, the cutting blade 216 (236) is disposed so that the cutting edge is exposed in the groove 214 (234), and the fin 114a inserted through the groove 214 (234) is peeled off. Thereby, only the fin 114a can be peeled off by moving (sliding) the tool 200 along the insulated wire 110. Therefore, it is possible to easily and accurately peel off only the fin 114a with a simple operation, the influence on the work result due to the skill difference of the worker can be eliminated, and the workability of the fin peeling work can be improved. .

  FIG.7 (b) is sectional drawing of the 1st clamping member 210 of Fig.7 (a). As described above, the cutting blade 216 (236) is arranged so that the cutting edge is exposed in the groove portion 214 (234). As shown in FIG. 7B, the inside of the groove portion 214 (234). It is most preferable that the cutting edge is disposed so as to be exposed at a substantially boundary portion between the groove 214 (234) and the sliding surface 212 (232). Thereby, the fin 114 a provided on the covering 114 of the insulated wire 110 can be surely peeled off from the boundary with the covering 114.

  The accommodation space 218 (238) is peeled off by the cutting blade 216 (236), and accommodates the fin 114a that has passed through the gap 220 (240) and entered the accommodation space 218 (238).

  The gap 220 (240) is formed on the side of the cutting blade 216 (236) that does not face the insulated wire 110. The gap 220 (240) connects the groove 214 (234) and the storage space 218 (238). Thereby, the fin 114a peeled off by the cutting blade 216 in the groove part 214 can be guided to the storage space 218 (238).

  Then, as shown in FIG. 8A, the insulated wire 110 is clamped by the first clamping member 210 and the second clamping member 230, and the tool 200 is moved in the direction of the arrow using a pulling member 266 described later. 8B, the tool 200 slides along the insulated wire 110, and the fin 114a of the insulated wire 110 peeled off by the cutting blades 216 and 236 passes through the gaps 220 and 240. Then, it is accommodated in the accommodating spaces 218 and 238.

  The covering member 222 (242) is a cover that covers the accommodation space 218 (238). Thereby, since the storage space 218 (238) is closed, the peeled fin 114a does not go out of the storage space 218 (238). Accordingly, the stripped fin 114a can be prevented from falling to the ground, and the scattering of the fin 114a to the ground can be avoided. For this reason, it becomes possible to reduce the trouble of cleaning after work.

  The covering member 222 can be attached to and detached from the first holding member 210, and the covering member 242 can be attached to and detached from the second holding member 230. Therefore, when the interiors of the accommodation spaces 218 and 238 are filled with the peeled fins 114a (see FIG. 8B), the covering member 222 (242) is removed as shown in FIG. 238) is opened, and the accumulated fin 114a can be easily recovered.

  The fastener 224 (244) is a member for preventing the covering member 222 (242) from being detached from the first holding member 210 (second holding member 230). The fastener 224 can rotate in the horizontal direction (the arrow direction shown in FIG. 8C). Accordingly, when the fastener 224 (244) is rotated in the counterclockwise arrow direction shown in FIG. 8C, the fastener 224 (244) moves from the top of the covering member 222 (242), and the covering member 222 ( 242) can be removed from the first clamping member 210 (second clamping member 230). Then, when the removed covering member 222 (242) is attached to the first holding member 210 (second holding member 230) and the clip 224 (244) is rotated in the clockwise arrow direction shown in FIG. 8C. The clip 224 (244) moves onto the covering member 222 (242), and the covering member 222 (242) is prevented from being detached from the first holding member 210 (second holding member 230).

  In the present embodiment, the series of members described above are provided on both the first clamping member 210 and the second clamping member 230, but the present invention is not limited to this. It suffices to be provided on at least one of the clamping member 210 or the second clamping member 230.

  FIG. 9 is a view for explaining the first gripping member 260 and the second gripping member 262, and FIG. 9A is an exploded perspective view of the tool 200. The first gripping member 260 and the second gripping member 262 are members for gripping the tool 200. The first holding member 260 is connected to the first clamping member 210 by the first connecting member 270. Thereby, the 1st holding member 260 and the 1st clamping member 210 can interlock | cooperate.

  Further, a non-slip 260 a is provided at a portion of the first gripping member 260 that is gripped by the operation tool. Thereby, since the 1st holding member 260 can be reliably hold | gripped using an operating tool, the improvement of operativity can be aimed at. In this embodiment, a rubber member is used as the anti-slip 260a. However, the present invention is not limited to this, and any material that can increase the frictional force with the operation tool, such as a resin material, is used. Good.

  The 2nd holding member 262 is connected with the 2nd clamping member 230 by the 2nd connection member 280 mentioned later. Thereby, the 2nd holding member 262 and the 2nd clamping member 230 can interlock | cooperate. The second gripping member 262 is also provided with a non-slip 262 a as with the first gripping member 260. Thereby, the above-described advantages can be obtained.

  The second connecting member 280 is slidably connected to the first connecting member 270, and can relatively move in a direction in which the first holding member 210 and the second holding member 230 are separated from each other. The first connecting member 270 is longer than the second connecting member 280, and the interval between the first holding member 210 and the first holding member 260 is wider than the interval between the second holding member 230 and the second holding member 262. Therefore, the second holding member 230 and the second holding member 262 are disposed between the first holding member 210 and the first holding member 260. Thereby, when the 1st holding member 260 and the 2nd holding member 262 are brought close, the 1st clamping member 210 and the 2nd clamping member 230 will space apart.

  FIG. 9B is a diagram illustrating a state where the first gripping member 260 and the second gripping member 262 are gripped. As shown in FIG. 9 (b), using the YATCO 300 as an operation tool, when gripping these so that the distance between the first gripping member 260 and the second gripping member 262 is narrower than a predetermined distance (see FIG. 5), The 1st clamping member 210 and the 2nd clamping member 230 are spaced apart, and the insulated wire 110 can be arrange | positioned between these (separated space).

  The elastic member 264 (see FIG. 4) is connected to the first clamping member 210 and the second gripping member 262, and biases the first clamping member 210 and the second clamping member 230 in the direction of clamping the insulated wire 110. To do. Accordingly, when the first gripping member 260 and the second gripping member 262 are not gripped, that is, when they are released, the second sandwiching member 230 abuts on the first sandwiching member 210 by the elastic member 264. The first clamping member 210 and the second clamping member 230 are brought into contact with each other (see FIGS. 5A and 5B).

  The pulling member 266 is a member for pulling the tool 200 along the insulated wire 110. As a result, the pulling member 266 can be gripped using an operation tool such as the YATCO 300, or a hook-shaped operation tool can be hooked on the pulling member 266, and the pulling member 266 can be pulled using these operation tools. The tool 200 can be moved along the insulated wire 110. Therefore, the tool 200 can be moved without directly applying a force to itself, and the tool 200 is prevented from being damaged by the force. Further, since the tool 200 can be moved simply by pulling the pulling member 266, operability can be improved and work efficiency can be improved.

  FIG. 10 is a diagram illustrating the operation of the tool 200. From the state shown in FIGS. 5A and 5B, the first holding member 260 and the second holding member 262 are narrowed by using an operation tool (not shown) such as a YATCO 300. When gripped, as shown in FIGS. 10A and 10B, the first clamping member 210 and the second clamping member 230 are separated from each other.

  Then, as shown in FIGS. 10C and 10D, the insulated wire 110 is disposed in the space between the first clamping member 210 and the second clamping member 230. Thereafter, when the first gripping member 260 and the second gripping member 262 are released, the second clamping member 230 is urged by the elastic member 264 in a direction in contact with the first clamping member 210, and FIGS. 10 (e) and 10 (f). As shown, the insulated wire 110 is sandwiched between the first gripping member 260 and the second gripping member 262.

  Thereafter, as shown in FIG. 10 (g), the pulling member 266 is pulled using an operation tool such as a Yatco 300, and the tool 200 in the state shown in FIG. 10 (e) is moved in the direction of the arrow. Thereby, the fin 114a of the insulated wire 110 is peeled off (see FIGS. 7B and 7C). Then, by rotating the tool 200 along the covering 114 of the insulated wire 110 (see FIGS. 11B and 11C), the peeled fin 114a is separated from the insulated wire 110, and the accommodation space 218 ( 238).

  As described above, the first holding member 210 and the second holding member 230 hold the insulated wire 110 by the urging of the elastic member 264, so that the tool 200 is hooked on the insulated wire 110. As a result, the tool 200 is prevented from falling off from the insulated wire 110, and the fin 114a can be safely stripped off.

  Further, since the tool is in a state of being hooked on the insulated wire 110, the holding (fixing) of the tool 200 with an operation tool or the like becomes unnecessary after the insulated wire 110 is sandwiched. Therefore, the fin stripping work can be performed by only one worker, and the cost required for artificial work can be reduced.

  In addition, since the insulated wire 110 stretched around the utility pole 100 may be installed in a twisted state, the fins 114a are positioned above and below the insulated wire 110 as shown in FIG. Is not limited. FIG. 11 is a diagram illustrating another example of the position of the fin 114 a of the insulated wire 110. For example, as shown in FIG. 11A, it is easily assumed that the fin 114 a is located on the side surface of the insulated wire 110. When the insulated wire 110 shown in FIG. 11A is sandwiched between the first sandwiching member 210 and the second sandwiching member 230, the fin 114a is not inserted into the grooves 214 and 234 as shown in FIG. 11B. End up.

  In the above case, after sandwiching the insulated wire 110, the tool 200 is rotated in the direction of the arrow shown in FIG. Accordingly, as shown in FIG. 11C, the fin 114a is inserted into the groove portions 214 and 234, and the fin 114a can be appropriately peeled off. The rotation direction of the tool 200 is not limited to the direction of the arrow shown in FIG. 11B, and can be changed as appropriate depending on the direction of the fin 114a.

  FIG. 12 is a diagram illustrating the rotation operation of the first gripping member 260 and the second gripping member 262. The first connecting member 270 is a member for connecting the first clamping member 210 and the first gripping member 260. A shaft 272 is erected on the first connecting member 270, and the first gripping member 260 is rotatably attached to the shaft 272.

  The second connecting member 280 is a member for connecting the second holding member 230 and the second gripping member 262. A shaft 282 is erected on the second connecting member 280, and the second gripping member 262 is rotatably attached to the shaft 282.

  The first gripping member 260 is rotatable about the shaft 272 and the second gripping member 262 is rotatable about the shaft 282 in the direction of the arrow shown in FIG. Then, when the first gripping member 260 and the second gripping member 262 are rotated in the direction of the clockwise arrow in FIG. 12A, the first gripping member 260 and the second gripping member 262 are shown in FIG. It becomes a state. Further, when the first gripping member 260 and the second gripping member 262 are rotated in the direction of the counterclockwise arrow in FIG. 12A, the first gripping member 260 and the second gripping member 262 are changed to the state shown in FIG. It will be in the state shown.

  With such a configuration, the operator can change the angle of the Yachto 300 to a desired angle without changing the installation position of the tool 200, and the operator adjusts the Yatco 300 to an angle at which the operator can easily work. Work. Therefore, the burden on the worker can be reduced and the work efficiency can be improved.

  Even when the direction of the fin 114a changes, such as when the insulated wire 110 is twisted (see FIG. 11), the first gripping member 260 and the second gripping member 262 rotate following the tool 200. For this reason, the worker can perform work without frequently changing the orientation of the Yatco 300 or his / her posture.

  As described above, according to the fin stripping tool 200 according to the present embodiment, the fin 114a of the insulated wire 110 sandwiched between the first sandwiching member 210 and the second sandwiching member 230 is inserted into the grooves 214 and 234. The Then, only the fin 114 a is peeled off by the cutting blades 216 and 236 by moving the tool 200 along the insulated wire 110. Thereby, it becomes possible to peel off only the fin 114a easily and accurately by a simple operation without depending on the skill of the worker. Therefore, the workability of the fin stripping work can be improved.

  In addition, although the example used in an indirect hot wire construction method was demonstrated in the said embodiment, the fin stripping tool which concerns on this invention is not limited to this, It can use also for a direct hot wire method. That is, the fin stripping tool according to the present invention can be suitably used regardless of the construction method, as long as the fin is stripped from the finned wire.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to this embodiment. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  INDUSTRIAL APPLICABILITY The present invention can be used as a fin stripping tool and a fin stripping method for stripping off the fins of a snow-covered insulated wire.

DESCRIPTION OF SYMBOLS 100 ... Electric pole 110 ... Insulated electric wire 112, 122 ... Core wire 114, 124 ... Cover 114a ... Fin 120 ... PD wire 130 ... Transformer 140 ... Connection part 150 ... Connector 150a, 150b ... Insertion hole 152 ... 1st member 154 ... 2nd Member 156 ... Nut 156 ... Connector cover 160 ... Insulating tape 162 ... Gap 200 ... Fin stripping tool 210 ... First clamping members 212, 232 ... Sliding surfaces 214, 234 ... Groove parts 216, 236 ... Cutting blades 218, 238 ... Spaces 220, 240 ... Gap 222, 242 ... Cover member 230 ... Second clamping member 250 ... Space 260 ... First gripping members 260a and 262a ... Non-slip 262 ... Second gripping member 264 ... Elastic member 266 ... Traction member 270 ... First 1 connecting member 280 ... 2nd connecting member

Claims (6)

Fin stripping for stripping off the fin of a hard-to-wear type insulated electric wire comprising a core wire, a coating covering the core wire, and a rib-shaped fin standing on the outer periphery of the coating along the bus bar A tool,
A first clamping member and a second clamping member for clamping the insulated wire ;
A first gripping member connected to the first clamping member;
A second gripping member connected to the second clamping member;
An elastic member connected to the first clamping member and the second gripping member and biasing the first clamping member and the second clamping member in a direction of clamping the insulated wire ;
At least one of the first clamping member or the second clamping member is
A sliding surface that contacts the outer periphery of the coating;
A groove provided on the sliding surface and capable of inserting the fin;
A cutting blade arranged to expose the cutting edge in the groove,
I have a,
By gripping the first gripping member and the second gripping member and narrowing the distance between the first gripping member and the second gripping member from a predetermined distance, the first sandwiching member and the second sandwiching member are A fin stripping tool characterized by being separated .   The fin stripping tool according to claim 1, further comprising a pulling member for pulling the fin stripping tool along the insulated wire. A first connecting member that connects the first clamping member and the first gripping member;
A second connecting member that connects the second clamping member and the second gripping member;
Further comprising
The first gripping member is rotatably attached to a shaft erected on the first connecting member, and the second gripping member is rotatably attached to a shaft erected on the second connecting member. The fin stripping tool according to claim 1 . At least one of the first clamping member or the second clamping member is
An accommodation space for accommodating the fins removed;
Provided on the surface side of the cutting blade not facing the insulated wire, and a gap connecting the groove and the storage space;
A covering member that is detachable from each of the first clamping member and the second clamping member and covers the accommodation space;
The fin stripping tool according to claim 1, further comprising:   The fin stripping tool according to claim 1, wherein the sliding surface is concave. A fin stripping method for stripping off the fins of the snow-covered insulated wire coating,
A first holding member connected to the first holding member; a first holding member and a second holding member that hold the insulated wire; and a first holding member connected to the first holding member. A member, a second holding member coupled to the second holding member, and the first holding member and the second holding member connected to the first holding member and the second holding member to hold the insulated wire between the first holding member and the second holding member An elastic member that biases in the direction of
By gripping the first gripping member and the second gripping member and narrowing the distance between the first gripping member and the second gripping member from a predetermined distance, the first sandwiching member and the second sandwiching member are Separated,
Sandwiching the insulated wire by the first clamping member and the second clamping member;
Insert the fin into the groove,
A fin stripping method, wherein the fin is stripped by the cutting blade by moving the fin stripping tool along the insulated wire.

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