JP7369050B2 - Wire sheath stripping device - Google Patents

Description

The present invention relates to a wire sheath stripping device for stripping the insulation sheath of an installed electric wire.

Overhead power lines are installed several meters higher than the ground. When making branch connections for power distribution, construction workers generally use an insulating operating rod to operate a wire sheathing stripping device and strip off the insulation sheathing of the installed wires within a predetermined range while the wires are live. conduct.

Conventionally, a method for stripping insulated wires has been known in which a stripping blade cuts out the insulation coating and sends the insulated wire to the entrance side of the wire receiving hole in the stripping section, thereby stripping the insulation coating in a spiral pattern (patented). Document 1: Japanese Patent Application Publication No. 2008-136328). Furthermore, an insulating operating rod (also referred to as a drive hook) is known in which the wire sheath stripping device is operated by a worker below and whose gripping portion and tip portion are insulated (Patent Document 2: Patent Document 2: Publication No. 2008-253059). A wire sheath stripping device is known that includes a tilting connection section that tiltably supports a sheath stripping tool mounting section with respect to an attachment section (main body) (Patent Document 3: Japanese Patent Laid-Open No. 2009-060753 Publication No.).

Japanese Patent Application Publication No. 2008-136328 Japanese Patent Application Publication No. 2008-253059 Japanese Patent Application Publication No. 2009-060753

The covering debris that has been peeled off and cut from the installed electric wires falls under the influence of gravity and wind force. If coating debris falls, there is a risk of collision with people or animals near the ground. Patent Document 1 describes that the peeled and cut coating waste is taken out so as to hang down from the opening of the peeling part, and furthermore, the peeled and cut coating waste has an end that is taken out from the opening of the peeling part. The figure shows it hanging in the air, caught on the wall. In other words, the configuration described in Patent Document 1 is insufficient as a countermeasure against falling because the coating debris hangs in the air in an unstable state. Further, in Patent Documents 2 and 3, there is no description regarding countermeasures against falling coating debris. Since the coating debris is sent out in a spiral and the direction in which it is sent out is not determined, it is difficult to predict the position where the coating debris will fall. Therefore, there is a desire to prevent the peeled and cut coating waste from falling.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wire sheath stripping device having a structure that dramatically improves the ability to prevent sheathing debris from falling compared to conventional products.

In one embodiment, the above problem is solved by a solving means as disclosed below.

The wire sheath stripping device according to the present invention includes a frame having a housing space for housing an installed wire, a notch that serves as an entrance to the housing space, and is rotatable about a first rotation axis. A main body including a first gear built into the frame, a first shaft rotatable about a second rotation axis perpendicular to the first rotation axis, a receiving part, a sliding part, and a stripping blade. and a sheathing stripping part connected to the main body so as to be rotatable together with the first gear, and the stripping blade cuts into the insulation sheath of the electric wire held by the receiving part and the sliding part. The sliding portion includes a first guide portion along which coating waste peeled off from the insulating coating is placed, and a first guide portion that is connected to the first guide portion to accommodate the coating waste and It has a cylindrical second guide part that guides the electric wire in a direction away from the installed electric wire , and the entrance of the first guide part is arranged at a position outside the cutting edge of the stripping blade with respect to the first rotation axis. It is characterized by

According to this configuration, the coating waste peeled off by the stripping blade is sent out along the inner wall of the first guide part while being pushed toward the first guide part disposed on the slide part. Therefore, the coating waste is retained by the first guide part and can be prevented from falling.

According to the present invention, it is possible to realize a wire sheathing stripping device having a structure in which the function of preventing sheathing debris from falling is dramatically improved compared to conventional products.

FIG. 1 is a schematic perspective view showing an example of a wire sheath stripping device according to a first embodiment of the present invention. FIG. 2 is a front view of the wire sheath stripping device shown in FIG. 1. FIG. 3 is a cross-sectional view taken along the line III--III in which the internal structure in FIG. 2 is partially omitted. FIG. 4 is a schematic perspective view of the wire sheath stripping device of FIG. 1 viewed from a different direction. FIG. 5 is a schematic front view showing an example of a main body constituting the wire sheath stripping device of FIG. 1. FIG. FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5, with some of the internal structure omitted. FIG. 7 is a schematic structural diagram showing an example of the arrangement of gears in FIG. 5. FIG. FIG. 8 is a schematic front view showing an example of a connection structure between a receiving part and a sliding part in the sheath stripping part of the wire sheath stripping device of FIG. 1. FIG. FIG. 9 is a cross-sectional view showing the internal structure in FIG. 8 with some parts omitted. FIG. 10 is a schematic diagram showing an example of how the wire sheath stripping device according to the first embodiment is used. FIG. 11 is a schematic perspective view showing an example of a wire sheath stripping device according to a second embodiment of the present invention. FIG. 12 is a front view of the wire sheath stripping device of FIG. 11. FIG. 13 is a cross-sectional view taken along line XIII-XIII in which the internal structure in FIG. 12 is partially omitted. FIG. 14A is a schematic front view showing a wire sheath stripping device according to a third embodiment of the present invention, and FIG. 14B is a right side view of the wire sheath stripping device of FIG. 14A. FIG. 15 is a schematic perspective view showing an example of an attachment according to an embodiment of the present invention. 16A is a side view of the attachment of FIG. 15, FIG. 16B is a side view of the attachment of FIG. 16A with the intersecting angle changed, and FIG. 16C is a side view of the attachment of FIG. 16A, with the internal structure partially omitted. FIG. 17A is a schematic view showing the operating rod in a state where the attachment of FIG. 15 is connected, and FIG. 17B is a schematic view showing the operating rod in a state where the attachment of FIG. 15 is assembled and fixed.

[Wire sheath stripping device]
(First embodiment)
As shown in FIGS. 1 to 4, the wire sheath stripping device 1A of this embodiment includes a main body 5 in which a first gear 10a is built-in, and a sheath that is connected to the main body 5 so as to be rotatable together with the first gear 10a. A peeling part 9 is provided. The frame 2 is a casing that has a housing space V1 that accommodates the installed electric wire E1. The first gear 10a is built into the frame 2, and is arranged to be rotatable about the first rotating shaft P1.

5 to 7 are diagrams showing the main body 5. FIG. The first gear 10a has a through hole larger than the outside diameter of the overhead electric wire E1 formed in the center, and a notch U1 that serves as an entrance for the overhead electric wire E1 on the outside diameter side. The holes are continuous. The first gear 10a is an external gear in which a notch U1 and a through hole are formed, and has an alphabetical "C shape" when viewed from the front (see FIG. 7). As an example, the main body 5 includes a holding part 6 that is connected and fixed to the first gear 10a on the outside of the frame 2 and rotates together with the first gear 10a. Two support plates 25 are rotatably disposed on both sides of the frame 2. The support plate 25 is connected and fixed with the first gear 10a sandwiched therebetween. A holding part 6 is disposed adjacent to the front side of the frame 2, and the support plate 25 and the holding part 6 are connected and fixed.

In the example of FIG. 6, the main body 5 is connected to a connecting portion 3 that is arranged to be connectable to an operating rod 94a (or operating rod 94b) about a second rotating shaft P2 that is orthogonal to the first rotating shaft P1. It has a first shaft built into the part 3, and a gear box 4 which is connected and fixed to the connecting part 3 and the frame 2 in order to transmit the rotational force of the operating rod 94a (or operating rod 94b) to the second gear 10b. . Gear 32 and gear 42 are arranged in gear box 4. The gear 32 is connected and fixed to the first shaft 31 and meshes with the gear 42. The gear 42 and the second gear 10b are both connected and fixed to the shaft 41. Gear 32 and gear 42 are miter gears. According to this example, the gear 32 and the gear 42 can be made into the same part. Note that the present invention is not limited to this example, and the gear 32 and the gear 42 may be bevel gears. The operation rod 94a (or operation rod 94b) is not limited to the above structure, and known techniques such as the above-mentioned Patent Document 2 can be applied.

In the example of FIG. 7, the main body 5 includes a first gear 10a, a second gear 10b that interlocks the first gear 10a, and two gears that are disposed on both sides of the second gear 10b and mesh with the second gear 10b. A third gear 10c is provided, and each of these gears is built into the frame 2. Both or one of the two third gears 10c is configured to mesh with the first gear 10a. According to this configuration, the rotational force transmitted from the operating rod 94a (or operating rod 94b) to the second gear 10b is transferred to the first gear 10a of the external gear in which the notch U1 and the through hole are formed. It is possible to reliably transmit the signal to the first gear 10a via either or both of the third gears 10c. Here, the axial center of the second gear 10b is perpendicular to the line of the second rotation axis P2, and the two third gears 10c are arranged at symmetrical positions with respect to the second rotation axis P2. According to this example, the two third gears 10c can be made of the same component. Note that the configuration is not limited to this, and the two third gears 10c may be arranged at positions asymmetrical with respect to the second rotation axis P2.

As an example, the main body 5 is provided with a first ratchet 51. The first ratchet 51 includes a locking portion 51a that is connected and fixed to the support plate 25, and an arm portion 51b that operates within the frame 2. Here, the rotation direction D1 is a direction in which the first gear 10a rotates forward, and coincides with the advancing direction of the stripping blade 81. When the first shaft 31 is rotated in the rotational direction C1 using the operating rod 94a (or the operating rod 94b), the first gear 10a rotates in the rotational direction D1. As an example, the first shaft 31 is configured to be connected to an operating rod 94a (or operating rod 94b) and rotate. The first ratchet 51 does not hinder the rotation of the first gear 10a when the first gear 10a rotates forward. On the other hand, the first ratchet 51 is configured to restrict the reverse rotation of the first gear 10a when the first gear 10a rotates in the reverse direction. According to this configuration, since reverse rotation of the first gear 10a can be prevented, positioning can be easily performed when inserting (approaching) the main body 5 into the overhead electric wire E1. Moreover, when the insulation coating stripping work is completed, the main body 5 can be easily removed from the installed electric wire E1.

8 and 9 are schematic diagrams showing an example of a connection structure between the receiving part 7 and the sliding part 8 in the coating stripping part 9. As shown in FIG. The sheath stripping part 9 includes a receiving part 7 disposed so as to be able to come into contact with the outer periphery of the installed electric wire E1, and a sliding part 8 disposed in connection with the receiving part 7 so as to be able to grip the installed electric wire E1 together with the receiving part 7. and a stripping blade 81 disposed on the slide portion 8 at a position capable of cutting into the insulation coating E1a of the installed electric wire E1. In the example of FIG. 8, the first gripping surface 7a of the receiving portion 7 is formed with an arc-shaped recess in a front view so as to extend along the outer periphery of the installed electric wire E1. Further, the second gripping surface 8a of the slide portion 8 is subjected to a surface treatment such as nitriding treatment to reduce the frictional force with the installed electric wire E1 when the main body 5 rotates during the insulation coating stripping operation. The slide portion 8 includes, for example, a presser plate 83 that contacts the outer periphery of the electrical wire E1, and is configured to use the presser plate 83 to adjust the cutting position of the cutting edge 81a of the stripping blade 81. Note that the slide portion 8 is not limited to this example, and the slide portion 8 may have a configuration in which convex portions that can bite into the outer periphery of the installed electric wire E1 are formed at predetermined intervals on the second gripping surface 8a.

For example, the covering stripping section 9 includes a first adjusting section 21 that adjusts the position of the receiving section 7 by moving the receiving section 7 in a direction toward and away from the first rotation axis P1. The first adjustment section 21 is connected to the receiving section 7 at a position opposite to the sliding section 8 side. According to this configuration, the center of rotation of the receiving portion 7 can be made to coincide with the center line of the installed electric wire E1 with high accuracy. A dial 21a is provided on the front side of the first adjustment section 21. Here, the first adjustment part 21 has a built-in cam mechanism, and when the dial 21a is set to a predetermined scale, the receiving part 7 is moved forward or backward with a stroke corresponding to the scale. Further, the first adjustment section 21 is provided with a lock section 21b that locks the dial 21a. According to this example, the receiving portion 7 can be returned to the original position by rotating the dial 21a once. Note that the present invention is not limited to this example, and a rack and pinion mechanism, a worm gear mechanism, and other known mechanisms may be applied.

The stripping blade 81 is a type of hard tool, and is made of steel, stainless steel, or the like. For example, the stripping blade 81 is used by being fixed to the slide portion 8 by passing a fixing member such as a bolt through the through hole 81c. The cutting edge 81a of the stripping blade 81 has, for example, an external shape that resembles a truncated cone divided in half in the axial direction, and is formed by carving a counterbore in the axial direction.

The coating stripping section 9 includes, for example, a cutting edge angle adjusting section 23 that adjusts the cutting edge angle of the stripping blade 81, and a dial 23a is disposed on the front side of the sliding section 8. The stripping blade 81 is arranged on the slide part 8 by the blade angle adjustment part 23 such that the blade edge 81a cuts into the insulation coating E1a of the installed electric wire E1 held by the receiving part 7 and the slide part 8. Here, a cam mechanism is built into the slide portion 8, and when the dial 23a is set to a predetermined scale, the cutting edge angle of the stripping blade 81 is adjusted to an angle corresponding to the scale. A lock portion for locking the dial 23a is provided on the slide portion 8. The lock portion can be provided on the dial 23a (not shown). According to this example, the stripping blade 81 can be returned to its original position by rotating the dial 23a once. Note that the dial 23a and the stripping blade 81 may be directly connected to each other, or may be connected via a gear mechanism, and other known mechanisms may be applied.

The second adjustment part 22 is, for example, an eye nut, and as shown in FIG. 9, the slide part 8 is made to approach the receiving part 7 by rotating clockwise in the G1 direction about the fifth rotation axis P5. It is. According to this example, the tightening direction of the connecting bolt 92 is set opposite to that of the connecting bolt 92, so that the connecting bolt 92 can be prevented from loosening. As an example, the coating stripping section 9 is provided with a hollow support section 91 that connects the slide section 8 and the receiving section 7 so as to be able to come into contact with and separate from them. Here, the slide part 8 has a cylindrical coupling part 82, and the outer peripheral surface of the cylindrical support part 91 comes into contact with the inner surface 82a of the counterbored hole of the coupling part 82, so that the slide part 8 and the receiving part 7 are connected to each other. are connected in a detachable manner. The slide portion 8 is disposed so as to be slidable along a plate portion provided on the receiving portion 7. The connection bolt 92 connects the first adjustment section 21 and the second adjustment section 22 by passing through the support section 91 and the compression spring 93. The connecting bolt 92 is formed with a trapezoidal thread. The compression spring 93 is disposed in a counterbore 91 a formed in the support portion 91 and biases the slide portion 8 in a direction away from the receiving portion 7 . According to this configuration, in the work of attaching the wire sheathing stripping device 1A to the overhead wire E1, the stripping blade 81 is prevented from coming into contact with the overhead wire E1 when the main body 5 is inserted into the overhead wire E1 (during approach). can. In addition, when the insulation coating stripping work is completed and the main body 5 is removed from the installed electric wire E1, it is possible to prevent the stripping blade 81 from coming into contact with the installed electric wire E1.

In the sheathing stripping section 9, for example, a second ratchet 52 is disposed on the receiving section 7 at a position opposite to the side of the electric wire E1. The second ratchet 52 is configured to regulate when the direction in which the slide portion 8 moves is opposite to the direction in which it approaches the receiving portion 7 . According to this configuration, when gripping the installed electric wire E1 in the installation work of the wire sheath stripping device 1A, it is possible to easily perform the operation of bringing the slide portion 8 into contact with the outer periphery of the installed electric wire E1. Furthermore, in the removal work of the wire sheath stripping device 1A, the second ratchet 52 can be released by a simple operation of pulling down the operating lever 52a, so that the work of separating the slide portion 8 from the outer periphery of the installed wire E1 can be done quickly. . As an example, the operating lever 52a is integrally connected to the second ratchet 52, and a slit 71a is formed in the plate portion. Further, a biasing means 52b such as a compression spring that biases the operating lever 52a in a direction away from the plate portion is disposed on the plate portion. The operating lever 52a has a distal end protruding from the slit. According to this configuration, the second ratchet 52 can be easily operated from the outside using the operating lever 52a.

Here, the main body 5 includes a holding part 6 which is connected and fixed to the first gear 10a on the outside of the frame 2 so as to be rotatable together with the first gear 10a, and the covering stripping part 9 is held by both sides of the first adjusting part 21. The cover stripping section 9 is detachably attached to the holding section 6. According to this configuration, the coating stripping portion 9 can be easily attached to the main body 5. Furthermore, since the covering stripping portion 9 can be easily removed from the main body 5, maintenance efficiency is improved. Note that the present invention is not limited to this example, and the sheathing peeling section 9 may be fixed to the holding section 6, or the sheathing stripping section 9 may be fixed to the first gear 10a.

FIG. 3 is a sectional view showing the internal structure in FIG. 2 with some parts omitted. The slide part 8 has a first guide part 11 along which the coating waste E1d peeled off from the insulation coating E1a is placed, and the entrance 11a of the first guide part 11 is aligned with the cutting edge of the stripping blade 81 with respect to the first rotation axis P1. It is arranged at a position outside of 81a. With this configuration, the coating waste E1d cut out from the insulation coating E1a by the stripping blade 81 is sent out along the inner wall of the first guide section 11 while being pushed toward the first guide section 11 disposed on the slide section 8. Therefore, the coating waste E1d is retained by the first guide portion 11 and can be prevented from falling. The first guide portion 11 is made of, for example, aluminum, iron, other lightweight metals, or engineering plastics.

The slide portion 8 in this embodiment has a cylindrical second guide portion 12 that is connected to the first guide portion 11 and guides the covering waste E1d in a direction away from the electrical wire E1. According to this configuration, when the tip portion E1b of the coating waste E1d that is sent out exits the outlet 11b of the first guide portion 11, the direction of movement is changed so as to move away from the first rotation axis P1, and A portion is accommodated in the guide portion 12. Therefore, falling of the coating waste E1d can be prevented. Here, the second guide part 12 is connected and fixed to the first guide part 11 by a fixing member 15 such as a screw, and can be easily removed from the first guide part 11, thereby improving maintainability. The second guide portion 12 may have a rectangular tube shape or may have a cylindrical shape. Note that the first guide section 11 and the second guide section 12 may be formed into an integral structure. The second guide portion 12 is made of, for example, aluminum, iron, other lightweight metals, or engineering plastics.

In this embodiment, the width 12c of the inner wall of the second guide part 12 is set to be larger than the width 11c of the inner wall of the first guide part 11, and the total length 12d of the second guide part 12 is The width is set to be larger than the width 12c at the inner wall. According to this configuration, the coating waste E1d to be sent out can be smoothly sent out to the second guide portion 12. Further, it is possible to secure a sufficient length to accommodate the sent-out covering waste E1d and keep it away from the installed electric wire E1 so that it does not get caught or wrapped around the installed electric wire E1. As an example, the total length 12d of the second guide portion 12 is set to exceed 50 [mm] and 150 [mm]. The total length 12d of the second guide portion 12 is preferably 75 [mm] or more, and more preferably the total length 12d is 100 [mm] or more. The optimum overall length 12d of the second guide portion 12 is 125±20 [mm]. The width 11c on the inner wall of the first guide part 11 is set to be larger than the width of the cutting edge 81a of the stripping blade 81. For example, the width 11c on the inner wall of the first guide part 11 is set to 15 [mm] or more. has been done.

Subsequently, a method of operating the wire sheath stripping device 1A of this embodiment will be described below.

As a preparatory work, the receiving part 7 is aligned by rotating the dial of the first adjusting part 21 in accordance with the outer diameter standard and cross-sectional area standard of the installed electric wire E1. Next, the dial of the cutting edge angle adjusting section 23 is rotated to adjust the cutting edge angle of the stripping blade 81 in accordance with the outer diameter standard and cross-sectional area standard of the installed electric wire E1. After the preparation work, the operating rod 94a (or operating rod 94b) is connected to the connecting portion 3 of the wire sheath stripping device 1A, and the frame 2 of the main body 5 is inserted into the installed electric wire E1. Next, the rotational force of the operating rod 94a (or operating rod 94b) is transmitted to the first gear 10a, and the coating stripping section 9 is rotated half a turn in the rotational direction D1, so that the sliding section 8 is received at the lower position. The portion 7 is in the upper position. Then, use the operating rod with a hook to push up the slide portion 8 to bring it close to the electrical wire E1, and use the operating rod with a hook (not shown) to rotate the second adjustment portion 22 to the side where the electrical wire E1 is tightened, thereby increasing the sliding portion 8. It is brought closer to the receiving part 7 and tightened until the sliding part 8 and the receiving part 7 grip the installed electric wire E1. When the electric wire E1 is gripped by the sliding part 8 and the receiving part 7, the cutting edge 81a is in a position to cut into the insulation coating E1a. Then, the rotational force of the operating rod 94a (or operating rod 94b) is transmitted to the first gear 10a, and the stripping blade 81 cuts the insulation coating E1a of the installed electric wire E1 while moving the coating stripping portion 9 in the rotation direction D1. When rotated one rotation or more, the cutting edge 81a cuts into the insulation coating E1a, and the cutting edge 81a cuts into the insulation coating E1a, and the wire coating stripping device 1A advances while exposing the core wire E1c of the overhead electric wire E1. Peel off the insulation coating E1a.

Then, the coating waste E1d cut out from the insulation coating E1a by the stripping blade 81 is sent out along the inner wall of the first guide part 11 while being pushed toward the first guide part 11 arranged on the slide part 8. When the tip E1b of the coating waste E1d exits the outlet 11b of the first guide section 11, it changes its traveling direction so as to move away from the first rotation axis P1, and is accommodated in the cylindrical second guide section 12 (Fig. 3).

Then, the insulation coating E1a of the installed electric wire E1 is stripped in a predetermined range by the wire coating stripping device 1A, and the sliding portion 8 is placed in the lower position and the receiving portion 7 is placed in the upper position by the rotational force of the operating rod 94a (or the operating rod 94b). position, and then use the operating rod with a hook to rotate the second adjusting part 22 two to three times toward the loosening side of the installed electric wire E1 so that the sliding part 8 is slightly separated from the receiving part 7, and then move the sheathing stripping part 9 in the rotating direction. The cable is rotated once in the direction D1 to cut off the coating waste E1d from the insulation coating E1a of the installed electric wire E1. Thereafter, the second adjusting part 22 is rotated two to three times toward the side where the electrical wire E1 is loosened, and the sliding part 8 is separated from the receiving part 7, and the operating lever 52a is pulled down using an operating rod with a hook (not shown). Then, the second ratchet 52 is released, the slide portion 8 is further separated from the receiving portion 7, and the wire sheath stripping device 1A is removed from the installed electric wire E1. In this way, the work of stripping off the insulation coating of the installed electric wire E1 is completed. When the work is completed, the stripped and cut off coating waste E1d is removed from the installed electric wire E1 together with the wire coating stripping device 1A while being retained by the first guide section 11 and the second guide section 12.

Subsequently, a wire sheath stripping device 1B according to a second embodiment will be described.

(Second embodiment)
As shown in FIGS. 11 to 13, the wire sheath stripping device 1B of the present embodiment includes a main body 5 having a built-in first gear 10a, and a sheathing connected to the main body 5 so as to be rotatable together with the first gear 10a. A peeling part 9 is provided. The second embodiment will be explained mainly on the points that are different from the first embodiment.

FIG. 13 is a sectional view showing the internal structure in FIG. 12 with some parts omitted. The slide part 8 has a first guide part 11 along which the coating waste E1d peeled off from the insulation coating E1a is placed, and the entrance 11a of the first guide part 11 is aligned with the cutting edge of the stripping blade 81 with respect to the first rotation axis P1. It is arranged at a position outside of 81a. The slide portion 8 in this embodiment is provided with an eaves portion 13 that is inclined in a direction that covers a portion of the outlet 11b of the first guide portion 11 in order to catch the coating waste E1d. According to this configuration, the forward end portion E1b of the coated waste E1d to be sent out changes its traveling direction when exiting the outlet 11b of the first guide portion 11, so that it is stopped by the eaves portion 13 and prevented from falling. The eaves portion 13 has a plurality of locking portions extending in mutually different directions, and here, the first locking portion 14a, the second locking portion 14b, and the third locking portion 14c are respectively It is arranged. The first locking part 14a extends from the eaves part 13 and has a bent shape that is further inclined in a direction to cover a part of the outlet 11b of the first guide part 11. The second locking portion 14b extends from the eaves portion 13 and has a bent shape that is further inclined toward the main body 5. The third locking portion 14c extends from the eaves portion 13 and has a bent shape that is further inclined away from the main body 5. According to this configuration, even when the direction in which the coating waste E1d is sent out is not determined, any one of the first locking part 14a, the second locking part 14b, and the third locking part 14c extending in different directions can be used. Since it is locked in one or more types, falling can be prevented. Note that configurations other than the above include a configuration in which the first locking part 14a and the second locking part 14b or the third locking part 14c are arranged, and a configuration in which the second locking part 14b and the third locking part 14c are arranged. 14c may be arranged. The eaves part 13 is made of, for example, aluminum, iron, other lightweight metals, or engineering plastics, is processed by sheet metal, and is connected and fixed to the first guide part 11 with a fixing member 15 such as a screw. In addition, as a configuration other than the above, the first guide part 11 and the eaves part 13 may be made into an integral structure.

Subsequently, a wire sheath stripping device 1C according to a third embodiment will be described.

(Third embodiment)
The third embodiment will be described with a focus on points that are different from the second embodiment. As shown in FIGS. 14A and 14B, the receiving part 7 and the sliding part 8 are configured to be tightened with upper and lower screws to grip the installed electric wire E1. Here, the gear configuration and the basic operation of stripping off the insulation coating E1a of the installed electric wire E1 are the same as in the above-described embodiment. The peeled off coating waste E1d is sent out along the stripping blade 81 and the inner wall of the first guide part 11, and when it exits the outlet 11b of the first guide part 11, the traveling direction changes, and the peeled and cut coating waste E1d is sent out along the stripping blade 81 and the inner wall of the first guide part 11. The waste E1d is held in the first guide part 11, the eaves part 13, the first locking part 14a, and the second locking part 14b.

Subsequently, the attachment 70 that allows the above-mentioned wire sheath stripping devices 1A to 1C to be set at a predetermined angle will be described.

[attachment]
As shown in FIG. 10, the location of the branch connection for power distribution on the overhead wire E1 is a certain distance from the utility pole T1, so when stripping off the insulation coating E1a, the construction worker M1 who climbed the utility pole T1 If the sheath stripping device 1A (or the wire sheath stripping device 1B or the wire sheath stripping device 1C) is at a predetermined angle, the workability will be further improved. Therefore, attachment 70 is used.

FIG. 15 is a schematic perspective view showing an example of the attachment 70 according to the embodiment of the present invention, FIG. 16A is a side view of the attachment 70, and FIG. 16B is an example of the attachment 70 with the intersecting angle K1 changed. FIG. 16C is a sectional view showing the internal structure with some parts omitted. The attachment 70 of this embodiment includes a first gear 10a built into the frame 2 so as to be rotatable about a first rotation axis P1, and a second rotation axis P2 that is orthogonal to the first rotation axis P1. a main body 5 having a rotatable first shaft 31; a covering stripping part 9 having a receiving part 7, a sliding part 8, a stripping blade 81 and connected to the main body 5 so as to be rotatable together with the first gear 10a; The stripping blade 81 is used in the wire sheath stripping device 1 configured to cut into the insulation sheath E1a of the installed wire E1 held by the receiving portion 7 and the slide portion 8 (or the present invention). The attachment 70 of the embodiment is used in an existing wire sheath stripping device).

The attachment 70 of this embodiment includes, for example, a universal joint 71 and a third rotation axis P3 that is connected to the first shaft 31 via the universal joint 71 and intersects the second rotation axis P2 at a predetermined intersection angle K1. This configuration includes a second shaft 72 that is rotatable about the axis. According to this configuration, the first shaft 31 in the wire sheath stripping device 1A is the second shaft 72 that is rotatable about the third rotation axis P3 that intersects the second rotation axis P2 at a predetermined intersection angle K1. Since it becomes rotatable, the range in which the insulation coating E1a can be stripped off can be expanded. The intersection angle K1 may be a preset constant angle, or may be adjustable.

In the example of FIGS. 16A to 16C, the attachment 70 is connected to a third shaft 73 that is connected to the opposite side of the universal joint 71 to the side that is connected to the second shaft 72 and is rotatable about the second rotation axis P2. and a crossing angle adjustment section 74 that can adjust the crossing angle K1. With this configuration, the rotational force of the operating rod 94a (or operating rod 94b) can be efficiently transmitted to the wire sheath stripping device 1, and the crossing angle K1 can be quickly adjusted to a value suitable for on-site work. As an example, the intersection angle is set to 5 degrees or more and 45 degrees or less. As a result, as shown in FIG. 10, the intersection angle range becomes easy for the construction worker M1 to operate. That is, by setting the intersection angle K1 to 5 degrees or more, the range from which the insulation coating E1a is stripped can be effectively expanded. Further, by setting the intersection angle K1 to 45 degrees or less, the range in which the insulating coating E1a is stripped can be adjusted within a range that is easy to operate. The crossing angle adjustment part 74 is, for example, a guide member made of sheet metal, and has through holes 74a formed on both sides that allow the crossing angle K1 to be adjusted stepwise. Adjust the intersection angle adjustment position and return the first knob 79a to the desired position. The crossing angle K1 is adjusted to, for example, 5[degrees], 10[degrees], 20[degrees], 30[degrees], or 45[degrees]. As an example, the crossing angle K1 may be adjusted in 5[degree] steps, or as an example, the crossing angle K1 may be adjusted in 10[degree] steps, or as an example, the crossing angle K1 may be adjusted to an arbitrary angle. It may be necessary to make minor adjustments.

The second shaft 72 has a first bearing 75a disposed on the side connected to the universal joint 71, and the third shaft 73 has a second bearing 75b disposed on the side connected to the universal joint 71. According to this configuration, it is possible to prevent axial wobbling between the second shaft and the third shaft 73, so the rotational force of the operating rod 94a (or operating rod 94b) is transmitted to the second shaft 72 of the first joint 76a, and The rotational force from the second shaft 72 is transmitted to the third shaft 73, and the rotational force of the third shaft 73 is smoothly transmitted to the first shaft 31 via the socket 78 of the second joint 76b. The second joint 76b and the connecting portion 3 are connected by pulling out and returning the second knob 79b. The first bearing 75a and the second bearing 75b are, for example, deep groove ball bearings. The universal joint 71 has a bellows shape, for example, and is covered with a cover 77 made of rubber or resin, which prevents water droplets, debris, etc. from entering.

The examples shown in FIGS. 17A and 17B have a configuration in which the second shaft 72 is rotated by rotating the operating section 99. According to this configuration, the wire sheath stripping device 1 can be set at a predetermined crossing angle K1. Note that the attachment 70 may be used by being connected to an existing wire sheath stripping device. The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the scope of the present invention.

1, 1A, 1B, 1C Wire sheath stripping device 2 Frame 3 Connecting section 4 Gear box 5 Main body 6 Holding section 7 Receiving section, 7a First gripping surface, 7b Sending section 8 Slide section, 8a Second gripping surface 9 Sheathing stripping Part 10a First gear, 10b Second gear, 10c Third gear 11 First guide part, 11a Inlet, 11b Outlet, 11c Inner wall width, 11d Overall length 12 Second guide part, 12a Inlet, 12b Outlet, 12c Inner wall width , 12d Full length 13 Eaves part 14a First locking part, 14b Second locking part, 14c Third locking part 15 Fixing member 21 First adjustment part 22 Second adjustment part 23 Blade angle adjustment part 25 Support plate 31 First Shaft 43 Compression spring 51 First ratchet 52 Second ratchet 70 Attachment 71 Universal joint 72 Second shaft 73 Third shaft 74 Intersection angle adjustment section, 74a Through hole 75a First bearing, 75b Second bearing 76a First joint, 76b 2 joint 77 Cover 78 Socket 79a First knob, 79b Second knob 81 Stripping blade, 81a Cutting edge 82 Joint part 83 Holding plate 91 Support part 92 Connection bolt 93 Compression springs 94a, 94b Operation rod 96 Tip part 97 Cylindrical part 99 Operation part E1 Erection electric wire E1a Insulation coating E1b Tip portion E1c Core wire E1d Covering waste P1 First rotation axis P2 Second rotation axis P3 Third rotation axis U1 Notch V1 Accommodation space

Claims (3)

a frame having an accommodation space for accommodating an electric wire; a first gear having a notch forming an entrance to the accommodation space and built into the frame so as to be rotatable about a first rotating shaft; A main body having a first shaft rotatable about a second rotation axis perpendicular to the first rotation axis, a receiving part, a sliding part, a stripping blade, and rotatable together with the first gear. a sheathing stripping part connected to the main body, the stripping blade being arranged at a position to cut into the insulation sheath of the installed electric wire held by the receiving part and the sliding part,
The slide part includes a first guide part along which sheathing scraps peeled off from the insulation sheath are guided, and a tube connected to the first guide part that accommodates the sheathing scraps and guides them in a direction away from the electrical wire. An electric wire sheath stripping device comprising a second guide portion having a shape , and an entrance of the first guide portion being disposed at a position outside a cutting edge of the stripping blade with respect to the first rotating shaft. . The width of the inner wall of the first guide part is set to be larger than the cutting edge of the stripping blade,
The width at the inner wall of the second guide part is set to be larger than the width at the inner wall of the first guide part, and the total length of the second guide part is larger than the width at the inner wall of the second guide part. The wire sheath stripping device according to claim 1 , characterized in that the wire sheathing stripping device is set to a dimension. The width of the inner wall of the first guide part is set to 15 mm or more, and the width of the inner wall of the second guide part is set to 125±20 mm.
The wire sheath stripping device according to claim 2, characterized in that:

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