JP2016100937A - Armor rod attachment/detachment tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an armor rod attachment/detachment tool which enables a user to wind armor rods around an electric wire and remove the armor rods attached to the electric wire with a simple tool.SOLUTION: An armor rod attachment/detachment tool 1 includes half-cut sleeve members 2 which are loosely fitted in an outer periphery of an electric wire and make a pair. Each sleeve member is provided with: an operation handle 5 extending to the radial outer side; an electric wire housing groove part 12 which sandwiches the electric wire with the other sleeve member; and insertion holes 13 which are arranged at the radial other side of the electric wire housing groove part 12 with the electric wire housing groove part 12 set as a center, the insertion holes 13 into which armor rods are respectively inserted. Each insertion hole 13 is formed so that a distance from the electric wire housing groove part 12 gradually shortens from one axial end part to the other axial end part of the sleeve member 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an armor rod attaching / detaching tool useful for winding an armor rod around an electric wire or unwinding and removing it from an electric wire.

  A plurality of armor rods are wound around the outer peripheral surface of the power transmission line so as to prevent the electric wire from being damaged and absorb the torsional force so as to cover the entire circumference of the power transmission line. Since it is difficult to wind and remove such an armor rod with bare hands, conventionally, various removal tools and winding devices have been proposed.

  Among these, as a tool for removing the armor rod on the electric wire, it comprises a halved tapered sleeve loosely fitted on the outer periphery of the electric wire, and means for propelling the tapered sleeve along the axial direction of the electric wire, The taper part of the taper sleeve is formed so that it can be pulled under the armor rod on the electric wire, and the screw member of the propulsion means is rotated with a key wrench to generate propulsion force in the taper sleeve in the axial direction of the electric wire. The armor rod is pulled away from the end by pulling the tip of the taper part below the armor rod on the electric wire (Patent Document 1), or a two-divided cylinder that is externally coated on the wire Attached to one end surface side of the body, a reversing blade for biting and unraveling the armor rod, and each of the two divided cylinders. A half-collared collar is detachably attached to the inner peripheral surface of one of the two divided cylinders to accommodate the outer diameter of the filaments. There has been proposed one provided with a guide for leading the unraveled wire of the armor rod outwardly on the end face side to which the return blade is attached (Patent Document 2).

  Further, as a winding device for attaching an armor rod to an overhead power transmission line or the like, a plurality of lines having a first hole through which the power transmission line passes in the central portion and passing in the radial direction from the center of the first hole are used as a dividing line. A plurality of fixed bodies provided so as not to rotate with respect to the power transmission line, and one end of each of the plurality of armor rods installed on the plurality of fixed bodies and arranged along the outer peripheral surface of the power transmission line. A holding part provided freely along the inner peripheral surface of the hole and release of the holding, and a second hole having a diameter larger than the diameter of the armor rod wound around the power transmission line at the center part, A plurality of rotating bodies that rotate around the second hole when the parts divided by the dividing line and divided into a plurality of pieces are integrated, and are installed at positions separated from the fixed body by a predetermined amount; and a fixed body Provided in each of the plurality of rotating bodies facing the side of the A plurality of grooves radially provided in the radial direction for inserting the other end of the armor rod, a plurality of fixed members and a plurality of rotating members for separating and integrally connecting the plurality of rotating members in a radial direction; There has been proposed one provided with rotating means for rotating when the rotating bodies are integrated.

JP-A-7-245833 JP-A-9-58304 Japanese Patent No. 2664159

However, the above-described armor rod removal tool is a tool specialized for removing the armor rod on the electric wire without damaging the electric wire. In particular, in the tool shown in Patent Document 1, the tip portion of the armor rod is removed from the electric wire. Although it is excellent for pulling apart, it is an inefficient tool for loosening parts other than the tip part, and there is a disadvantage that it takes more time than manual work. In addition, the tool shown in Patent Document 2 seems to have a configuration in which the armor rod can be removed in a short time at portions other than the tip portion of the armor rod. In addition, since multiple strands are loosened sequentially, and the loosened wires are led out to the outside by a guide, there is no problem at the initial stage of armor rod removal. Since it begins to cover, there is a disadvantage that the work becomes difficult.
In addition, none of the above tools has a function of winding the armor rod, and other tools or devices are required for winding.
Moreover, as an apparatus for winding the armor rod, there is an apparatus shown in the cited document 3, but since the structure is complicated and the apparatus is large, there is a disadvantage that it is easily carried and is not easily attached to an electric wire.

  The present invention has been made in view of such circumstances, and mainly provides an armor rod attaching / detaching tool capable of winding an armor rod around an electric wire with a simple tool and capable of removing the armor rod attached to the electric wire. It is an issue.

  In order to achieve the above object, an armor rod attaching / detaching tool according to the present invention includes a pair of half-shaped sleeve members loosely fitted to the outer periphery of an electric wire, and each of the sleeve members is directed radially outward. An extended operation handle, an electric wire receiving groove that sandwiches the electric wire together with other sleeve members, and an insertion hole that is disposed radially outward from the electric wire receiving groove and that allows the armor rod to pass therethrough. The insertion hole is formed such that the distance from the wire receiving groove portion gradually decreases from one end portion in the axial direction of the sleeve member to the other end portion.

  Therefore, when the armor rod is wound around the electric wire, the pair of sleeve members are opened and the electric wire is inserted therebetween, and the pair of sleeve members is closed in a state where the electric wire is accommodated in the electric wire accommodating groove, and in this state, The end of the armor rod inserted through the armor rod from one end (open end with a relatively long distance from the wire receiving groove) and from the other end (open end with a relatively short distance from the wire receiving groove) Wrap the part around the wire. And the armor rod which penetrated each insertion hole is wound around an electric wire simultaneously by turning an operation handle centering on an electric wire (electric wire accommodation groove part). At this time, the insertion hole is formed so that the distance from the wire receiving groove portion gradually decreases from one end portion in the axial direction of the sleeve member to the other end portion. The problem that the winding of the armor rod around the electric wire is disturbed can be reduced, and the sleeve member is rotated to wind the armor rod around the electric wire. A propulsive force that moves along the axial direction is generated, and a plurality of armor rods are sequentially wound around the electric wire.

  Conversely, when removing the armor rod wound around the wire, open the pair of sleeve members, insert the wire between them, close the pair of sleeve members in a state where the wire is housed in the wire housing groove, and that state Loosen the ends of the armor rods wound with a little with other tools, etc., and insert the tip of each armor rod from the other end of each insertion hole (open end where the distance from the wire housing groove is relatively short) It is set as the state protruded from one edge part (opening edge where the distance from an electric wire accommodation groove part is comparatively long). Then, by turning the operation handle around the electric wire, the wound armor rod is inserted through each insertion hole and loosened. At this time, since the insertion hole is formed so that the distance from the wire receiving groove portion gradually increases from the other end portion in the axial direction of the sleeve member to the one end portion, the armor rod wound around the wire is attached to the insertion hole. It is possible to smoothly introduce into the insertion hole from the surface of the electric wire, and by rotating the operation handle, the sleeve member moves along the axial direction of the electric wire to the side around which the armor rod is wound, and the plurality of armor rods are loosened simultaneously. It will be removed.

  Therefore, by using the armor rod attaching / detaching tool having a simple configuration as described above, the armor rod can be easily wound and removed from the electric wire. Since it is removed, there is no inconvenience that the side of the armor rod attaching / detaching tool is covered with the loosened armor rod, and the armor rod removing operation is not hindered.

Here, each of the sleeve members may be configured as one member, but the half-shaped outer member in which the operation handle is disposed in the circumferential direction and the inner side of the outer member are relatively non-rotatable. A cylindrical outer sleeve member is configured by the outer member that is detachably mounted and has a half-shaped inner member in which the wire receiving groove and the insertion hole are formed. In addition, the inner sleeve member that is detachably attached to the outer sleeve member is configured by the inner shell member that forms a pair, and the outer member that forms the pair is connected in an openable / closable manner and is closed by a lock unit. It is good also as a structure which can be fixed.
By setting it as such a structure, it becomes possible to change an inner shell member according to an electric wire diameter or the kind of armor rod, and it becomes possible to give versatility.

Further, the sleeve member may be formed in a tapered shape in which the outer diameter gradually decreases from one end portion in the axial direction to the other end portion. The outer shape of the sleeve member is not particularly limited as long as the insertion hole is formed so that the distance from the wire receiving groove portion gradually decreases from one end portion in the axial direction of the sleeve member to the other end portion. However, by forming the sleeve member in a tapered shape in which the outer diameter gradually decreases from one end to the other in the axial direction, the mounting direction of the armor rod attaching / detaching tool is prevented from being mistaken, and the weight is reduced. It becomes possible.
Furthermore, the insertion hole may be located at a position where an opening portion of one end portion in the axial direction of the sleeve member is shifted in the circumferential direction with respect to an opening portion of the other end portion.

  By adopting such a configuration, when the armor rod is wound around the electric wire, the armor rod winding direction (the rotation direction of the armor rod attaching / detaching tool) and the direction in which the insertion hole is twisted in the circumferential direction are made to coincide with each other. The inconvenience that the winding around the electric wire is disturbed can be reduced, and the armor rod can be more smoothly introduced into the insertion hole even when it is detached from the electric wire, so that it can be easily loosened.

  As a means for mounting the outer member and the inner member in a relatively non-rotatable manner, for example, a concave portion is formed in one of the outer member and the inner member, and a convex portion that fits into the concave portion is formed in the other. Thus, when the inner member is attached to the outer member, the relative rotation in the circumferential direction may not be possible.

As described above, according to the armor rod attaching / detaching tool according to the present invention, the operation handle extended outward in the radial direction on the pair of half-shaped sleeve members loosely fitted on the outer periphery of the electric wire, An electric wire receiving groove portion that sandwiches the electric wire and a plurality of insertion holes that are disposed radially outward from the electric wire receiving groove portion and through which the armor rod is inserted are provided, and the insertion hole is provided in one axial direction of the sleeve member. Since it was formed so that the distance from the wire receiving groove portion gradually decreased from the end of the arm to the other end, by passing the armor rod through the insertion hole, the armor rod can be smoothly guided from the insertion hole to the wire, The inconvenience that the winding of the armor rod around the electric wire is disturbed can be reduced, and the winding operation of the armor rod around the electric wire can be easily performed. Further, when removing the armor rod attached to the electric wire, the armor rod can be smoothly introduced into the insertion hole from the surface of the electric wire, and the loosening armor rod does not cause any trouble in the removing operation.
Therefore, it is possible to easily wrap and remove the armor rod around the electric wire using one armor rod attaching / detaching tool.

FIG. 1 is a view showing a configuration example of an armor rod attaching / detaching tool according to the present invention (an example in the case of using a bundled pre-formed armor rod), (a) is a plan view thereof, (b) is a front view thereof, ( c) is a bottom view thereof. FIG. 2 is a front view showing a sleeve member of the armor rod attaching / detaching tool shown in FIG. 1. FIG. 3 is an exploded perspective view showing the armor rod attaching / detaching tool according to the present invention. 4A and 4B are views showing inner members forming a pair of armor rod attaching / detaching tools according to the present invention, wherein FIG. 4A is a plan view and FIG. 4B is a front view thereof. FIG. 5 is a diagram showing the types of armor rods, (a) is a diagram showing a bundled pre-formed armor rod and its mounting state on the wire, and (b) is a general pre-formed armor rod and its wire attached to the wire. It is a figure which shows an attachment state. FIG. 6 is an explanatory view illustrating an operation process for winding an armor rod around an electric wire using the armor rod attaching / detaching tool according to the present invention. 7A and 7B are diagrams showing another configuration example of the armor rod attaching / detaching tool according to the present invention (an example in the case of using a general pre-formed armor rod), where FIG. 7A is a plan view thereof, and FIG. 7B is a front view thereof. , (C) is a bottom view thereof.

  Hereinafter, an armor rod attaching / detaching tool according to the present invention will be described with reference to the drawings.

  1 to 3, an armor rod attaching / detaching tool 1 is used by being attached to an overhead electric wire, and is configured with a pair of halved sleeve members 2 that are loosely fitted on the outer periphery of the electric wire. .

  Each of the sleeve members 2 is formed of a hard material having a half-circular cross section formed of a hard material such as plastic or metal, and is also made of a hard material, and is not relatively rotatable inside the outer member 3. Therefore, the pair of sleeve members 2 are formed in a cylindrical outer side by the pair of outer members 3 in a state where the split surfaces are abutted with each other. A sleeve member 2a is configured, and a columnar inner sleeve member 2b that is detachably mounted on the inner side of the outer sleeve member 2a is configured by a pair of inner shell members 4.

  In this example, each sleeve member 2 is formed in a tapered shape in which the outer diameter gradually decreases from one end portion in the axial direction to the other end portion. Therefore, the outer member 3 (outer sleeve member 2a) and the inner member are formed. The member 4 (inner sleeve member 2b) is also formed in a tapered shape in which the outer diameter of the outer peripheral surface gradually decreases from one end portion in the axial direction to the other end portion.

  On the outer peripheral surface of the outer shell 3, an operation handle 5 extending in a direction substantially perpendicular to the shaft center is fixed to a substantially central portion in the axial direction so as to be detachable integrally or by screwing or the like. The operation handle 5 may be provided at one place on the outer peripheral surface of the outer member 3 or may be provided at a predetermined interval in the circumferential direction. In this example, each outer member 3 is provided at three positions with a predetermined interval in the circumferential direction (so that adjacent operation handles have a central angle of about 60 degrees).

  A housing recess 6 for housing the inner shell member 4 is formed on the facing surfaces of the outer shell member 3 facing each other. The inner wall of the housing recess 6 is formed to have substantially the same diameter as the outer peripheral surface of the inner shell member 4, and when the inner shell member 4 is received in the housing recess 6, the butting surface of the inner shell member 4 is the butting of the outer shell member 3. It matches the surface.

  An engagement recess 7 is further formed in the housing recess 6 of the outer member 3, and an engagement protrusion 8 that engages with the engagement recess 7 is provided on the outer peripheral surface of the inner member 4. In this example, the engaging recess 7 is formed on the inner surface of the housing recess 6 of each outer member 3 over a predetermined angular range (for example, a range of 45 to 90 degrees) in the circumferential direction. In order to facilitate mounting of the outline member 4, it is formed in the circumferential direction from one side edge of each outline member 3, and in this example, the width of the engagement recess 7 is directed radially outward from the inner surface of the accommodation recess 6. It is formed so as to become larger (formed so that the width is narrowest at the inner surface portion of the housing recess 6).

  In addition, the outer shell members 3 forming a pair are connected so that one side edge facing each other can be rotated by a hinge 10 and the other outer side edges facing each other are in contact with each other. Locking means 11 is provided for locking. The locking means 11 may be configured using a known latch mechanism. For example, a locking projection 11a is provided on one of the side edges of the outer member 3 facing each other and the locking projection 11a can be locked on the other side. A pivotable locking piece 11b is provided.

  On the other hand, as shown in FIG. 4, the inner shell member 4 is formed in a semicircular cross section, and the wire receiving groove 12 extending in the axial direction is formed in the center on each butting surface. A plurality of insertion holes 13 through which the armor rod is inserted radially outward from the wire receiving groove portion 12 are provided. The wire receiving groove 12 sandwiches the electric wire by abutting the pair of sleeve members 2 and is formed to have a diameter somewhat larger than the diameter of the electric wire, so that the pair of sleeve members 2 is loosely fitted with the electric wire sandwiched therebetween. It has come to be.

  The insertion hole 13 has a diameter set in accordance with the armor rod to be inserted. If the armor rod to be inserted is a bundling pre-home armor rod 15 shown in FIG. Since the wire bundling is formed in advance in a wavy shape, the armor rod is formed in a large diameter so that the wavy bundling armor rod can be smoothly inserted. The general preformed armor rod 16 in which the wire shown is formed in a wave shape is formed to have a diameter that is small enough to allow the armor rod to be inserted (in the configuration shown in FIGS. This shows a case where a pre-formed armor rod 15 is used).

  And each insertion hole 13 is formed so that the distance from the center electric wire accommodation groove part 12 may become small gradually from one end part of the axial direction of sleeve member 2 to the other end part. The insertion hole 13 is arranged so that the opening portion of one end portion in the axial direction of the sleeve member 2 and the opening portion of the other end portion are displaced from each other in the circumferential direction in accordance with the direction in which the armor rods 15 and 16 are wound around the electric wire. Is formed.

  In the above configuration, the operation of winding the armor rod 15 (16) around the electric wire 20 will be described. First, the outer member 3 that unlocks the outer member 3 by the lock means 11 is opened, and the outer member 3 that makes a pair around the hinge 10 is opened. The inner shell member 4 is fitted into the housing recess 6. At this time, in order to fit the engagement convex portion 8 of the inner shell member 4 into the engagement concave portion 7 of the outer shell member 3, the inner shell member 4 is slightly shifted in the circumferential direction with the outer shell member 3 opened ( In the state of rotation), the end portions of the engaging convex portion 8 and the engaging concave portion 7 are aligned with each other, and in this state, the inner member 4 is rotated around the axis. The mating convex portion 8 is inserted by sliding in the circumferential direction with respect to the engaging concave portion 7, and is slid until the abutting surface of the inner shell member 4 coincides with the abutting surface of the outer shell member 3.

  Thus, after fitting the inner shell member 4 to each outer shell member 3, the electric wire 20 is put between the pair of inner shell members 4, and as shown in FIG. The sleeve member 2 is closed so as to be sandwiched in the state of being accommodated in the wire accommodating groove 12 of the sleeve member 2 (inner shell member 4), and a pair of sleeve members abutted against each other by the lock means 11 so as to maintain the state is maintained. Lock 2

  After that, the armor rods 15 (16) are inserted into the respective insertion holes 13 from one opening end (opening end on the side farther away from the wire receiving groove), and a plurality of armor rods 15 ( 16) The terminal of 16) is slightly wound around the electric wire 20 and fixed.

  Then, by rotating the operation handle 5 around the electric wire 20 (the electric wire receiving groove portion 12), the paired sleeve members 2 are rotated, and the plurality of armor rods 15 (16) are checked while checking the winding state of the armor rods 15 (16). Are wound around the electric wire 20 at the same time. By this winding operation, the pair of sleeve members 2 naturally generates a propulsive force that moves along the axial direction of the electric wire on the side opposite to the side around which the armor rod 15 (16) is wound. While confirming the winding state of (16), the armature rod 15 (16) may be wound by the necessary length by continuing to rotate the operation handle 5.

  Conversely, when the armor rod 15 (16) wound around the electric wire 20 is removed, the armor rod attaching / detaching tool 1 is inserted into the electric wire portion near the end of the armor rod 15 (16) wound around the electric wire 20. 13 so that the other opening end (opening end on the side closer to the wire receiving groove 12) faces the armor rod side, and the end of the armor rod 15 (16) wound around the wire 20 is attached with a screwdriver or the like. The armor rods 15 (16) are loosened and spread, and the armor rods 15 (16) are inserted into the insertion holes 13 from the other opening end and pulled out from the one opening end. Then, if the operating handle 5 is rotated around the electric wire 20 while pressing the pair of sleeve members 2 against the armor rod side, the plurality of armor rods 15 (16) are removed from the electric wire 20 simultaneously.

  As a result, the armor rod 15 (16) removed from the electric wire 20 spreads rearward while being loosened through the insertion hole 13 (because it does not pass the side of the operation handle 5). 5 is not obstructed and the armor rod 15 (16) is not disturbed.

  1, 3, and 4, the inner shell member 4 is shown as an example in the case of using a bundle-type preformed armored rod 15, but in the case of using a generalized shaped preformed armored rod 16. The diameter of the insertion hole 13 is reduced, and the number of the insertion holes 13 is increased. For this reason, when it is desired to use the general preformed armor rod 16, as shown in FIG. 7, only the inner member 4 is replaced with one corresponding to the general preformed armor rod. .

  Further, when the inner member 4 is changed as shown in FIG. 7 so as to correspond to the general form preformed armor rod, the insertion hole 13 has an opening portion at one end in the axial direction of the sleeve member 2 and the other. The insertion hole 13 may be formed across the two inner members 4 if they are formed so as to be shifted in the circumferential direction from the opening portion at the end of the two, but the two inner members 4 are abutted against each other. If the insertion hole 13 is not displaced at the butting surface of the inner shell member 4 in this case, there is no particular problem.

  Further, in the above embodiment, the example in which the sleeve member 2 is formed with the tapered surface has been described. However, the insertion hole 13 extends from one end portion in the axial direction of the sleeve member 2 to the other end portion from the wire receiving groove portion 12. If the distance is formed so as to be gradually reduced, a sleeve member having no tapered surface may be used. In the above configuration example, the outer member 4 can be changed so that the inner member 4 can be changed. 3 and the inner shell member 4 are detachable separate members, but the outer shell member 3 and the inner shell member 4 may be integrated.

  Moreover, although the insertion hole 13 showed the example formed so that the circumferential direction position of the opening site | part of the one end part of the axial direction of the sleeve member 2 and the opening part of the other end part might be shifted, the electric wire accommodation groove part 12 was shown. It may be formed in parallel with.

  Furthermore, in order to make the outer shell member 3 and the inner shell member 4 non-rotatable relative to each other, an example in which the outer shell member 3 is provided with an engaging concave portion 7 and the inner shell member 4 is provided with an engaging convex portion 8 to be engaged therewith. As shown, the outer shell member 3 may be provided with an engaging convex portion, and the inner shell member 4 may be provided with an engaging concave portion to be engaged therewith so that they cannot be rotated relative to each other.

DESCRIPTION OF SYMBOLS 1 Armor rod attachment / detachment tool 2 Sleeve member 3 Outer member 4 Inner member 5 Operation handle 7 Engagement recessed part 8 Engagement convex part 11 Locking means 12 Electric wire accommodation groove part 13 Insertion hole 15, 16 Armor rod 20 Electric wire

Claims (5)

A pair of half-sleeved sleeve members loosely fitted on the outer periphery of the wire;
Each of the sleeve members includes
An operation handle extending outward in the radial direction;
An electric wire housing groove for sandwiching the electric wire together with another sleeve member;
With the wire receiving groove portion as the center, a plurality of holes arranged radially outside from this, and an insertion hole through which the armor rod is inserted,
Is provided,
The armor rod attaching / detaching tool, wherein the insertion hole is formed so that a distance from the wire receiving groove portion gradually decreases from one end portion in the axial direction of the sleeve member to the other end portion. Each of the sleeve members is
A half-shaped outer member in which the operation handle is disposed in the circumferential direction, and a half-divided member that is detachably attached to the inner side of the outer member so as not to rotate relative to each other, and is formed with the wire receiving groove and the insertion hole. And an inner member having a shape,
A cylindrical outer sleeve member is formed by the outer member forming a pair, and an inner sleeve member that is detachably attached to the outer sleeve member is formed by the inner member forming a pair, and the outer member forming the pair The armor rod attaching / detaching tool according to claim 1, wherein the armor rod attaching / detaching tool is connected to be openable and closable and can be fixed in a closed state by a locking means.   The armor rod attaching / detaching tool according to claim 1, wherein the sleeve member is formed in a tapered shape in which an outer diameter gradually decreases from one end portion in the axial direction to the other end portion.   4. The insertion hole according to claim 1, wherein an opening portion of one end portion in the axial direction of the sleeve member is located at a position shifted in a circumferential direction with respect to an opening portion of the other end portion. Armor rod attaching / detaching tool according to crab.   The outer member and the inner member are detachably mounted so as not to rotate relative to each other by forming a concave portion on one side and forming a convex portion that fits on the concave portion on the other side. The armor rod attachment / detachment tool according to claim 2, wherein:

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