JP3734527B2 - Coating peeling tool - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a coating stripping device for stripping a predetermined length of an insulation coating of an overhead distribution line in a live state.
[0002]
[Prior art]
Conventionally, various apparatuses for stripping the insulation coating of an aerial distribution line in a live state have been proposed. For example, in the peeling tool for the middle part of an electric wire disclosed in Japanese Utility Model Publication No. 6-2414, an insulation operation rod is provided on the peeling tool, and the insulation operation rod is substantially perpendicular to the axis of the electric wire. By rotating the handle of the insulating operation rod, the cutting blade of the peeling tool is rotated around the electric wire to peel off the insulating coating in a spiral shape. In this stripping tool, when the insulation coating is peeled off for a predetermined length, the stripping tool is prevented from moving along the wire with a fixed object such as a wire gripper, and in this state the cutting blade is placed around the wire at the same location. The insulating coating that has been peeled off is cut from its root portion by rotating the substrate at the base.
[0003]
[Problems to be solved by the invention]
However, in the above-mentioned peeling tool, two workers, an operator who operates the peeling tool and an operator who operates the electric wire gripper, are necessary to cut off the peeled insulation coating from the root portion. And this cutting work is performed on a narrow work table (bucket), and there is a problem of poor workability. Further, since the insulating operation rod is perpendicular to the axis of the electric wire, it has to be positioned directly below the electric wire at the place where the workbench is peeled off, and there is a problem that the working position is limited.
[0004]
The present invention has been made in view of these points, and it is possible to easily and reliably cut the insulating coating peeled off by one worker from its root without using a tool such as an electric wire gripper. An object of the present invention is to provide a live wire coating peeling device that does not need to be positioned directly below the electric wire where the workbench is peeled off.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a peeling tool body for peeling off the insulation coating of the electric wire by rotating the cutting blade around the electric wire, and an insulation for rotating the cutting blade of the peeling tool main body. An operating rod and a coupling member that connects the insulating operating rod to the peeling tool main body so as to be inclined with respect to the axis of the electric wire and transmits the rotational force of the insulating operating rod to the cutting blade of the peeling tool main body. It is characterized by comprising.
[0006]
[Action]
According to the present invention, the insulating operation rod is not perpendicular to the axis of the electric wire but is inclined, and in this state, the rotational force is transmitted to the peeling tool body through the joint member, and the peeling tool body is The cutting blade rotates around the wire to peel off the insulation coating. When the insulation coating of a predetermined length is peeled off, the peeling tool main body can be prevented from moving along the electric wire by slightly pulling the insulating operation rod toward the operator side. When the insulation operating rod is operated in this state and the cutting blade of the peeling tool body is further rotated, the cutting blade rotates around the electric wire at the same location, and the peeled insulation coating can be cut from its root portion. it can.
[0007]
【Example】
An embodiment of the present invention will be described below with reference to FIGS.
[0008]
FIG. 1 is a front view of a stripping tool body and a joint member, partially omitted and shown partially cut away, showing an embodiment of the coating stripping apparatus of the present invention. FIG. FIG. 3 is a plan view of a transmission piece constituting a pair of transmission members of the joint member, FIG. 4 is a side view of the transmission piece, FIG. 5 is a sectional view of the transmission piece, FIG. Is a side view of the operating rod, FIG. 7 is a partial side view showing a part of the connecting convex portion and the lock pin member provided at the upper end of the operating rod, and FIG. 8 is a use state of the coating peeling apparatus shown in FIG. It is a description perspective view for demonstrating.
[0009]
The coating peeling apparatus according to the present embodiment rotates the cutting blade 11 of the peeling tool main body 10 and the peeling tool main body 10 for peeling the insulating coating of the electric wire by rotating the cutting blade 11 around the electric wire. Insulating operating rod 20 (see FIG. 6) and the insulating operating rod 20 can be connected to the peeling tool body 10 at an inclination with respect to the axis of the electric wire, and the rotational force of the insulating operating rod 20 can be peeled off. The joint member 30 is transmitted to the cutting blade 11 of the tool body 10. Therefore, the insulation operating rod 20 can be operated in a state where it is inclined rather than perpendicular to the axis of the electric wire, and the insulation coating of the electric wire can be peeled off. The peeling tool main body 10 is held so as not to move along the electric wire, and the peeled insulating coating can be cut from its root portion.
[0010]
The peeling tool main body 10 includes a holding body 13 that houses a gear transmission mechanism 12 that transmits rotation from an insulating operation rod 20 via a joint member 30, and a substantially C-shape fixed to the back side of the holding body 13. And a pair of semicircular arc members 15a and 15b which are accommodated in the holding body 13 and rotated by the rotational force of the insulating operation rod 20 transmitted from the gear transmission mechanism 12. The semicircular arc members 15a and 15b are connected to each other through an opening / closing pin 15c so as to be openable and closable, thereby forming a circular electric wire insertion hole 15d.
[0011]
The gear transmission mechanism 12 includes bevel gears 12a and 12b rotated by the insulating operation rod 20, and a spur gear 12c that meshes with the bevel gear 12b and transmits the rotation of the insulation operation rod 20 to the semicircular arc members 15a and 15b. It is composed of The pair of semicircular arc members 15 a and 15 b are respectively provided with half gears 16 that mesh with the spur gear 12 c, and the rotational driving force is transmitted from the insulating operation rod 20 via the gear transmission mechanism 12. The semicircular arc members 15a and 15b maintain the closed state of the wire insertion hole 15d when rotated in one direction (clockwise in FIG. 1) by the rotational force of the insulating operation rod 20 transmitted through the gear transmission mechanism 12. While rotating in the same direction while rotating in the other direction (counterclockwise in FIG. 1), the semicircular arc member 15a rotates around the opening / closing pin 15c to open the wire insertion hole 15d. It is. The cutting blade 11 is disposed on the one semicircular member 15b side of the pair of semicircular members 15a and 15b. When the semicircular arc members 15a and 15b rotate in one direction (clockwise rotation in FIG. 1), the cutting blade 11 bites into the insulating coating of the electric wire in the electric wire insertion hole 15d, and the semicircular arc members 15a and 15b In order to prevent the insulation coating from peeling into the insulation coating of the electric wire when the insulation coating is peeled spirally with rotation and the semicircular arc members 15a and 15b are rotated in the other direction (clockwise rotation in FIG. 1). 11a is formed. Further, the first hook member 17 is swingably supported on one semicircular arc member 15a via a pin 17a. The first hook member 17 has one end detachably engaged with an engaging portion 15e provided on the other semicircular arc member 15b, and when the semicircular arc members 15a and 15b rotate in one direction, The closed state of the wire insertion hole 15d is maintained. Further, the second hook member 18 is supported on the metal fitting 14 via a pin 18a so as to be swingable. The second hook member 18 engages with the other end of the first hook member 17 when the pair of semicircular arc members 15a and 15b rotate in the other direction to open the wire insertion hole 15d. The hook member 17 is removed from the engaging portion 15e.
[0012]
The joint member 30 includes a first frame member 31 fixed to the lower end portion of the holding body 13, and a first frame member 31 on the insulating operation rod 20 side that is rotatably connected to the first frame member 31 via a connection pin 32. It consists of two frame members 33. On one of the outer surfaces of the second frame member 33, the rotation restricting member 34 is provided at a position that is disengaged from the connection pin 32 (appropriate position on the circumference around the connection pin 32).
[0013]
The rotation restricting member 34 has an engagement pin 34a that passes through the second frame member 33 and is detachably inserted into the engagement hole 31a of the first frame member 31, and engages with the engagement pin 34a. By inserting the hole 31a into the hole 31a, the second frame member 33 is restricted from rotating with respect to the first frame member 31 with the connecting pin 32 as a fulcrum. It is fixed so as to form a desired inclination angle, not at right angles to the axis of the electric wire.
[0014]
Although not shown, the engaging pin 34a is configured to be biased by a spring to engage with the engaging hole 31a and maintain the engaged state. A plurality of engagement holes 31a can be provided. If it does in this way, the inclination angle with respect to the electric wire of the insulation operation stick | rod 20 can be changed.
[0015]
Further, the first frame member 31 and the second frame member 33 are equipped with a pair of substantially cylindrical transmission members 35 a and 35 b that mesh with each other and transmit the rotation of the insulating operation rod 20 to the gear transmission mechanism 12. is there. One transmission member 35a is disposed in the first frame member 31 so as to be rotatable about its central axis perpendicular to the connection pin 32, and is connected to the bevel gear 12a. The other transmission member 35b is disposed in the second frame member 33 so as to be rotatable about its central axis perpendicular to the connecting pin 32. A driving shaft 36 having a hexagonal cross section for fixing the transmission member 35b to the insulating operation rod 20 is fixed to the other transmission member 35b. As shown in FIGS. 3 to 5, a plurality of substantially hemispherical convex portions 35c and substantially quarter-spherical concave portions 35d are alternately provided on the joint surfaces of the transmission members 35a and 35b that mesh with each other. It is provided. FIG. 3 shows a case where six convex portions 35c and six concave portions 35d are provided. The transmission members 35a and 35b transmit the rotation of the insulating operation rod 20 to the gear transmission mechanism 12 through the engagement of the convex portions 35c and the concave portions 35d. Even if they are separated from each other (if some of the convex portions 35c and the concave portions 35d are engaged with each other, even if the other convex portions 35c and the concave portions 35d are disengaged), a universal joint that transmits rotation is formed. .
[0016]
As shown in FIG. 6, the insulating operation rod 20 includes a fixed-side insulation rod 21, an operation-side insulation rod that is supported by the insulation rod 21 via metal fittings 22 and 23, and is rotated by an operation handle 24. 25. Then, the upper end portion of the operation-side insulating rod 25 is detachably connected to the end portion of the joint member 30 (the lower surface side of the second frame member 33).
[0017]
That is, the connection part 40 which has the connection recessed part 41 (refer FIG.1, FIG.2 and FIG.7) with which the upper end part of the operation side insulation stick | rod 25 fits is provided in the lower surface of the 2nd frame member 33. FIG. One outer surface of the connecting portion 40 is provided with a slit 42 that extends in the axial direction, opens at the lower end, and decreases in width at the intermediate height portion. The slit 42 communicates with the connecting recess 41. Further, the lower end portion of the drive shaft 36 fixed to the other transmission member 35b protrudes from the lower end opening surface of the connecting portion 40 (see FIGS. 1 and 2). On the other hand, as shown in FIG. 7, a connecting convex portion 43 that is detachably fitted to the connecting concave portion 41 is provided at the upper end portion of the operation-side insulating rod 25. A hole 43 a having a hexagonal cross section is formed in the upper end portion of the connecting convex portion 43, and the lower end portion of the driving shaft 36 fits in the same manner as the driving shaft 36. The drive shaft 36 is fitted in the hole 43a when fitted to the operating shaft, and the operation-side insulating rod 25 is connected to the other transmission member 35b. As shown in FIG. 7, a lock pin member 44 that fits into the slit 42 and maintains the fitting (connected) state between the connecting convex portion 43 and the connecting concave portion 41 is provided on the outer surface of the connecting convex portion 43. Is provided. The lock pin member 44 is inserted into a hollow lock pin 46 having a finger insertion hole 45 a at one end, and the hollow portion 46 a of the lock pin 46, and the lock pin 46 is supported on the outer surface of the connecting projection 43. And a spring 48 interposed between the lock pin 46 and the headed bolt 47 in the hollow portion 46a and press-contacting the lock pin 46 to the outer surface of the connecting portion 40 around the slit 42. It is composed of The other end portion on the slit 42 side of the lock pin 46 is formed to have an outer diameter smaller than that of the other portion through the step portion 46b . The finger insertion hole 45a is formed by a ring-shaped member 45 fixed to one end opening of the lock pin 46 by means such as screwing. This finger insertion hole 45a makes it easy to grip the lock pin 46 in the work standard for stripping the insulation coating of the electric wire, that is, in the work form performed by putting leather gloves on the work gloves. The headed bolt 47 is fixed to the outer surface of the connecting convex portion 42 by being screwed into the screw hole 42b on the outer surface of the connecting convex portion 42. For example, the headed bolt 47 is fixed by fixing means such as welding. Also good.
[0018]
Next, the usage method of the coating peeling apparatus comprised as mentioned above is demonstrated.
[0019]
First, the peeling tool main body 10 is connected to the upper end of the insulating operation rod 20. In this connection operation, first, a finger in a state where a leather glove is put on a work gloves is inserted into the finger insertion hole 45 a of the lock pin 46 to grip the lock pin 46, and the lock pin 46 is connected to the connection convex portion 43. The connecting convex portion 43 is fitted into the connecting concave portion 41 while being separated from the outer side surface and the lock pin 46 is aligned with the slit 42. When the finger is removed from the finger insertion hole 45 a when the fitting is completed, the stepped portion 46 b of the lock pin 46 is pressed against the outer surface of the connecting portion 40 around the slit 42 by the spring force of the spring 48. Thereby, the connection between the connection convex portion 43 and the connection concave portion 41 is completed. At this time, the drive shaft 36 is fitted in the hole 43 a of the connecting convex portion 43.
[0020]
Here, when the number of the engagement holes 31a is one, the inclination angle of the insulating operation rod 20 with respect to the electric wire is fixed. However, when a plurality of the engagement holes 31a are provided, the engagement of the rotation restricting member 34 is increased. The coupling pin 34a is once removed from the engagement hole 31a so that the second frame member 33 can freely rotate with respect to the first frame member 31 with the connecting pin 32 as a fulcrum. A tool that peels the operating rod 20 by reinserting the engagement pin 34a into the engagement hole 31a at an appropriate rotation angle after allowing the connection pin 32 to freely rotate with respect to the peeling tool body 10 as a fulcrum. If it fixes to the main body 10, the inclination-angle with respect to the axis line of the electric wire of the insulation operating rod 20 can be changed.
[0021]
When the peeling tool body 10 is attached to the upper end of the insulating operation rod 20 in this way, the drive shaft 36, the transmission members 35a and 35b, the gear transmission mechanism 12, and the half gear are operated from the insulation rod 25 on the operation side of the insulation operation rod 20. The rotation is transmitted to the pair of semicircular arc members 15 a and 15 b through 16. Next, when the operation handle 24 is rotated to rotate the semicircular arc members 15a and 15b in the counterclockwise direction in FIG. 1 within the holding body 13, the semicircular arc member 15a rotates around the opening / closing pin 15c. Open the wire insertion hole 15d. Then, the electric wire A in the live state is passed through the electric wire insertion hole 15d (see FIG. 8), and the operation handle 24 is rotated so that the semicircular arc members 15a and 15b are rotated in the clockwise direction in FIG. When rotated, the semicircular arc member 15a rotates around the opening / closing pin 15c to close the wire insertion hole 15d. Thereafter, when the operation handle 24 is rotated to rotate the semicircular arc members 15a and 15b in the clockwise direction in FIG. 1 in the holding body 13, the peeling tool main body 10 moves along the electric wire A while moving the cutting blade. 11 rotates around the electric wire A to peel the insulating coating B in a spiral shape (see FIG. 2). At this time, as shown in FIG. 8, even if the worker is not located directly below the electric wire A in the bucket C, the rotational force is transmitted to the peeling tool body 10 via the joint member 30. When the insulation coating B having a predetermined length is peeled off, the peeling tool body 10 does not move along the electric wire A by slightly pulling the insulating operation rod 20 inclined with respect to the axis of the electric wire A toward the operator. Can be. That is, when the insulating operating rod 20 is slightly pulled toward the operator side, the component force in the direction along the electric wire A among the pulling forces acts in the direction opposite to the moving direction of the peeling tool body 10, and The movement can be stopped. In this state, when the operating handle 24 of the insulating operating rod 20 is rotated to further rotate the cutting blade 11 of the peeling tool body 10, the cutting blade 11 rotates around the electric wire A at the same location, and the insulated insulation peeled off. The coating B can be cut from its root. Thereafter, when the semicircular members 15a and 15b are rotated counterclockwise in FIG. 1 in the holding body 13 by the operation handle 24, the wire insertion hole 15d is opened, and the peeling tool body 10 can be removed from the wire A. it can.
[0022]
The coating / peeling device of the present invention is not limited to the above-described embodiment. For example, the coating / peeling device is not divided into two members, such as the first frame member 31 and the second frame member 33, and is configured as an integral member. Then, the insulating operation rod 20 may be fixed to the peeling tool main body 10 so as to form a predetermined inclination angle with respect to the axis of the electric wire. In this way, the connecting pin 32 and the rotation restricting member 34 can be omitted.
[0023]
【The invention's effect】
As described above, according to the present invention, since the insulating operation rod is attached to the peeling tool main body so as to be inclined with respect to the axis of the electric wire, one worker can use without using a tool such as an electric wire gripper. In the conventional case (the insulating coating peeled in step 1 can be easily and reliably cut from the base part, and the workability is good and it is not necessary to place the workbench directly under the electric wire where the work piece is peeled off. The number of times the work table is moved in accordance with the peeling work can be reduced as compared to the case where the peeling work is performed with the operating rod substantially perpendicular to the axis of the electric wire.
[0024]
Further, as a pair of transmission members provided in the joint member, convex portions and concave portions 35d are alternately provided on the joint surfaces of the respective transmission members along the peripheral edge thereof, and the rotation is transmitted through the engagement between the convex portions and the concave portions. Since the mechanism is employed, the inclination angle of the operation rod with respect to the axis of the electric wire can be made larger than when a normal universal joint is employed.
[0025]
Furthermore, the lock pin member can be reliably held by the finger insertion hole, and the replacement work of the peeling tool body can be performed efficiently.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a front view of a peeling tool main body and a joint member, partly omitted and partially cut away, showing an embodiment of a coating peeling apparatus of the present invention.
FIG. 2 is a side view of a peeling tool main body and a joint member at the time of peeling of the wire coating.
FIG. 3 is a plan view of a transmission piece constituting a pair of transmission members of the joint member.
FIG. 4 is a side view of the transmission piece.
FIG. 5 is a sectional view of the transmission piece.
FIG. 6 is a side view of the operating rod.
FIG. 7 is a partial side view showing a connection convex portion provided on the upper end of the operation rod and a part of the lock pin.
8 is an explanatory perspective view for explaining a use state of the coating peeling apparatus shown in FIG. 1. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Peeling tool main body 11 Cutting blade 12 Gear transmission mechanism 13 Holding body 15a, 15b Semicircular arc shaped member 15d Electric wire insertion hole 20 Insulating operation rod 21 Fixed side insulating rod 25 Operation side insulating rod 30 Joint member 31 First frame member 32 connecting pin 33 second frame member 34 rotation restricting member 34a engaging pin 31a holes 35a, 35b transmission member 35c convex portion 35d concave portion 40 connecting portion 41 connecting concave portion 42 slit 43 connecting convex portion 44 lock pin member 45a finger insertion hole 46 Lock pin 47 Headed bolt 48 Spring

Claims (4)

A peeling tool body (10) for peeling off the insulation coating of the electric wire by rotating the cutting blade (11) around the electric wire, and an insulating operation rod (20) for rotating the cutting blade (11), A coupling member (30) for coupling the insulation operating rod (20) to the peeling tool main body (10), a coupling recess (41) at the end of the coupling member (30), and the coupling recess (41) is provided with a connecting portion (40) having a slit (42) that extends in the axial direction of the insulating operation rod (20), opens at the lower end, and narrows at the intermediate height. In the coating peeling tool provided with a connecting convex part (43) that is detachably fitted to the connecting concave part (41) on the insulating operation rod (20),
A lock pin (46) having a hollow portion (46a) formed on the connecting convex portion (43) with an outer diameter of the end portion on the slit (42) side smaller than that of the other portion via a step portion (46b). And a headed bolt (47) inserted into the hollow portion (46a) and fixed to the outer surface of the lock pin (46) to support the outer surface of the connecting projection (43). A spring (48) interposed between the lock pin (46) and the headed bolt (47) in the hollow portion (46a),
With the lock pin (46) aligned with the slit (42), the lock pin (46) is pulled away from the outer surface of the connection projection (43), and the connection projection (43) is moved to the connection recess. When the lock pin (46) is released by fitting in (41), the step (46b) of the lock pin (46) is moved around the slit (42) by the spring force of the spring (48). The coating peeling device is characterized in that the connection between the connection convex portion (43) and the connection concave portion (41) is completed by press-contacting the outer surface of the connection portion (40). In the coating peeling tool according to claim 1,
The gear transmission mechanism (12), one semicircular arc member (15a) in which the cutting blade (11) is arranged, and another semicircular arc member (15b) are connected in an openable and closable manner, and an electric wire insertion hole (15d) A pair of semicircular members (15a, 15b) rotated by the rotational force of the insulating operating rod (20) transmitted from the gear transmission mechanism (12), and the one semicircular member ( A first hook member (17) supported by 15a) so as to be swingable and having one end detachably engageable with an engaging portion (15e) provided on the other semicircular arc member (15b); A second hook member (18) that is swingably supported by a holding body (13) that houses the gear transmission mechanism (12) and engageable with the other end of the first hook member (17); ,
When the pair of semicircular arc members (15a, 15b) rotate in one direction, the wire insertion hole (15d) is closed, and one end portion of the first hook member (17) is the engagement portion (15e). While maintaining the closed state of the wire insertion hole (15d) by engaging with the wire, the insulation coating of the wire in the wire insertion hole (15d) is peeled off by rotating in the same direction, and the pair of semicircular arcs When the members (15a, 15b) are rotated in the other direction, the second hook member (18) engages with the other end of the first hook member (17), so that the first hook member (17) A coating peeling tool, wherein the engagement with the engagement portion (15e) is released and the wire insertion hole (15d) is opened. In the coating peeling tool according to claim 1 or 2,
The joint member (30) includes a first frame member (31) fixed to the peeling tool body (10), and the insulation operation rod (rotatably coupled to the first frame member (31)). 20) side second frame member (33), and the first frame member (31) and the second frame member (33), respectively, the center perpendicular to the axial direction of rotation of the second frame member (33) It is attached so that it can rotate around the axis, and approximately hemispherical convex portions (35c) and approximately quarter-spherical concave portions (35d) are alternately arranged on the joint surfaces facing each other. And a pair of transmission members that transmit the rotation of the insulating operation rod (20) to the cutting blade (11) through meshing with the recess. In the coating peeling tool according to claim 3,
An engagement pin (34a) that penetrates through the second frame member (33) and is detachably inserted into an engagement hole (31a) provided in the first frame member (31) , A covering and peeling apparatus for restricting rotation of the second frame member relative to the first frame member by inserting a pin into the engagement hole .

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