JP3212875U - Insulator replacement tool - Google Patents

Abstract

An insulator replacement tool capable of exchanging insulators with good workability is provided. An insulator replacement tool 1 is an insulator replacement tool used to replace an insulator provided at one apex 13d of a gusset plate 13 having a substantially triangular shape, and extends along one direction. Fixed to two sides 13b and 13c forming one apex 13d of the gusset plate 13 and the first side 13c arranged above the two sides 13b and 13c of the gusset plate 13, respectively. Provided on the upper side fixed portion 3, the lower side fixed portion 4 fixed to the second side 13 b of the two sides 13 b and 13 c of the gusset plate 13, and the base portion 2, and can hook the hook. Member locking portions 7A, 7B, and 7C. [Selection] Figure 2

Description

  The present invention relates to an insulator replacement tool.

  Conventionally, railway feeders are attached to insulators. Specifically, a brace is attached to the utility pole, a brace is provided on the brace, and the insulator wire is supported (see Patent Document 1 below). If the height of the utility pole is low, in order to secure the height to install the insulator between the end of the armrest and the wire such as an electric wire, the armrest should be pointed upward. Is attached to the utility pole.

  On the other hand, insulators need to be replaced when damaged by aging or lightning strikes. When exchanging the insulator, a scaffold is installed on the utility pole, and an operator standing on the scaffold removes the electric wire from the insulator and places the electric wire on the scaffold for temporary support. Next, the rope is tied to the removed insulator, and the worker on the scaffold hangs the rope to lower the insulator to the ground. Next, the worker on the ground removes the insulator from the rope, replaces it with a new insulator, and the operator on the scaffold lifts the rope and lifts the new insulator. Then, the new insulator is attached to the arm with a bolt or the like, and the replacement of the insulator is completed.

JP 2017-39353 A

  However, when the insulator is replaced as described above, if the electric wire is placed on the scaffold, the electric wire may come off the scaffold and hang down. For this reason, the operator on the scaffold must replace the insulator while holding the electric wire so that the electric wire does not come off the scaffold, and there is a problem that the operation is difficult. Also, when lowering the removed insulator to the ground and lifting a new insulator, the worker on the scaffold must support the weight of the insulator by holding the rope, which is a heavy work burden. is there. In addition, when attaching a new insulator to a brace with a bolt or the like, it is necessary for an operator on the scaffold to perform the bolting operation while holding the insulator alone, which makes it difficult to perform the operation.

  Therefore, the present invention has been made in view of the above circumstances, and provides a insulator replacement tool capable of exchanging insulators with good workability.

In order to achieve the above object, the present invention employs the following means.
That is, the insulator replacement tool according to the present invention is an insulator replacement tool used when replacing an insulator provided at one vertex of a substantially triangular gusset plate, extending along one direction, A base portion arranged to intersect each of the two sides forming the one vertex of the gusset plate, an upper fixing portion fixed to a first side arranged above the two sides of the gusset plate, and A lower fixing portion that is fixed to a second side disposed below the two sides of the gusset plate, and a member locking portion that is provided on the base and can lock the locking member. Features.

In the insulator replacement tool configured as described above, the insulator replacement tool is attached to the gusset plate by fixing the upper fixing portion to the first side of the gusset plate and fixing the lower fixing portion to the second side of the gusset plate. Fixed. In this state, if the hook (locking member) of the wire tensioner (shimeler) is locked to the member locking part of the replacement tool and the wire tensioner is adjusted, the wire such as the feeder supported by the insulator Can be temporarily supported by the wire tensioner. Conventionally, the worker on the scaffold had to replace the insulator while holding the electric wire, but by using the insulator replacement tool, the worker on the scaffold does not need to hold the electric wire, Workability is good because it is possible to concentrate on insulator replacement work.
Further, the rope hook (locking member) for raising and lowering the insulator is locked to the member locking portion of the replacement tool, the rope is tied to the insulator, and the rope is passed through the hook. As a result, the work assistant on the ground can support the weight of the insulator with the rope, and can perform the work of lowering the old insulator and lifting the new insulator. Conventionally, the worker on the scaffold had to support the insulator, and the burden of the work was heavy, but by using the insulator replacement tool, the worker on the scaffold does not need to support the insulator, and the insulator Since it is only necessary to guide the rope at the time of raising and lowering work, workability is good.

  In the replacement tool according to the present invention, the upper fixing portion is provided continuously with the first locking portion for locking the first side of the gusset plate, and the first locking portion, A first insertion portion that forms a first insertion space through which the first side of the gusset plate is inserted, and the lower fixing portion includes the second side of the gusset plate. A second locking portion that locks, and a second insertion space that is provided continuously to the second locking portion and that forms a second insertion space through which the second side of the gusset plate is inserted. It is preferable to have an insertion part.

  In the insulator replacement tool configured as described above, the first side and the second side of the gusset plate are inserted into the first insertion space and the second insertion space, respectively, and the first locking portion and the second locking portion are inserted. Since the insulator replacement tool is fixed to the gusset plate if it is engaged with the first side and the second side, respectively, the insulator replacement tool can be easily attached to the gusset plate.

  In the replacement tool according to the present invention, the lower fixing portion is disposed on one side in the one direction of the base with the gusset plate interposed therebetween, and the upper fixing on the other side in the one direction of the base. The part and the member locking part may be arranged.

  In the insulator replacement tool constructed in this way, the insulator is supported by supporting the insulator by locking the wire hook or the hook of the rope to the member locking portion provided on the other side of the base in one direction. Due to its own weight, a downward force acts on the upper fixing portion, and the upper fixing portion is securely locked to the first side of the gusset plate. Further, an upward force is applied to the lower fixing portion provided on the other side of the base in one direction, and the lower fixing portion is reliably locked to the second side of the gusset plate.

  Further, in the replacement tool according to the present invention, the member locking portions are provided at a plurality of locations, and the first surface of the base portion facing the gusset plate side and the first surface of the base portion on the opposite side to the first surface. It may be provided on two sides.

  In the insulator replacement tool configured as described above, since the member locking portion is provided on the first surface of the base and the second surface (both surfaces) on the opposite side, the locking member is locked to the member locking portion. Even if it makes it, it will not interfere between locking members.

  According to the insulator replacement tool according to the present invention, the insulator can be replaced with good workability.

It is a perspective view explaining the insulator used as the insulator replacement tool concerning one embodiment of the present invention. It is the figure which looked at the state which installed the insulator replacement tool which concerns on one Embodiment of this invention in the gusset board from the gusset board side. It is the figure which looked at the state which installed the insulator replacement tool which concerns on one Embodiment of this invention in the gusset board from the opposite side to FIG. It is a horizontal sectional view of the state where the insulator replacement tool concerning one embodiment of the present invention was installed in the gusset board. It is a figure explaining the method of replacing | exchanging a insulator using the insulator replacement tool which concerns on one Embodiment of this invention. It is a figure explaining the method of replacing | exchanging a insulator using the insulator replacement tool which concerns on one Embodiment of this invention, and shows the post process of FIG. It is a figure explaining the method of replacing | exchanging a insulator using the insulator replacement tool which concerns on one Embodiment of this invention, and shows the back process of FIG.

An insulator replacement tool according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view for explaining a insulator to be used by a insulator replacement tool according to an embodiment of the present invention.
In a railway electrical facility (train line) that supplies electricity to a train, for example, as shown in FIG. 1, a long arm 12 is attached to a utility pole 11. The arm metal 12 is disposed so as to gradually go upward as it goes from the side attached to the utility pole 11 toward the distal end portion 12a side. A gusset plate 13 is provided at the distal end portion 12 a of the arm metal 12. The gusset plate 13 has a substantially triangular shape when viewed from the front. One side 13a of the gusset plate 13 is attached to the arm metal 12 by welding or the like. On the corner (one vertex) 13d formed by the other two sides 13b and 13c of the gusset plate 13, a insulator 19u positioned at the uppermost end among the plurality of insulators 19 connected in the vertical direction is not shown. It is attached with bolts. An insulator (not shown) is provided on the insulator 19d located at the lowermost end, and an electric wire E such as a feeder is supported on the support. The insulator replacement tool 1 (see FIG. 2) according to the present embodiment is used when replacing all or a part of the plurality of insulators 19 provided in series.
When the height of the utility pole 11 is not sufficiently high relative to the height of the electric wire E, the height between the tip 12a of the arm 12 and the electric wire E, that is, the height for installing the insulator 19 is set. In order to ensure, the brace 12 may be inclined and installed as described above.

FIG. 2 is a view of the state in which the insulator replacement tool 1 is installed on the gusset plate 13 as viewed from the gusset plate 13 side. FIG. 3 is a view of the state in which the insulator replacement tool 1 is installed on the gusset plate 13 as viewed from the opposite side to FIG. 2. FIG. 4 is a horizontal cross-sectional view of the state in which the insulator replacement tool 1 is installed on the gusset plate 13.
As shown in FIGS. 2 to 4, the insulator replacement tool 1 includes a main body (base part) 2, a first fixing part (upper fixing part) 3, a second fixing part (lower fixing part) 4, One tightening portion 5, a second tightening portion 6, and ring bolts (member locking portions) 7A, 7B, 7C are provided.

  The main body 2 includes a substrate 22 and an extension plate 23 extending from the end of the substrate 22. In a state where the insulator replacement tool 1 is attached to the gusset plate 13, the longitudinal direction (one direction) of the substrate 22 intersects the sides 13 b and 13 c of the gusset plate 13, and the extension plate 23 is gusseted from the upper end of the substrate 22. The main body 2 is arranged so as to extend to the side opposite to the plate 13 side.

  In a state where the insulator replacement tool 1 is attached to the gusset plate 13, a surface (first surface) 22 a on the gusset plate 13 side of the substrate 22 has a first fixing portion 3, a second fixing portion 4, and a first fixing portion to be described later. The tightening part 5, the second tightening part 6, and the ring bolt 7B are arranged. Ring bolts 7A and 7C, which will be described later, are arranged on a surface (second surface) 22b opposite to the surface 22a of the substrate 22.

  The first fixing portion 3 is provided at the approximate center in the longitudinal direction of the substrate 22. The 1st fixing | fixed part 3 can be fixed to the edge | side (1st edge | side) 13c arrange | positioned among the edge | sides 13b and 13c of the gusset board 13. FIG.

  The first fixing portion 3 includes a protruding portion (first locking portion) 31 protruding from the surface 22a of the substrate 22, and an extending portion (first insertion portion) 32 extending from the protruding portion 31 to the second fixing portion 4 side. ,have.

  The extending portion 32 is disposed with a space (first insertion space) 32 s between the surface 22 a of the substrate 22. The extension portion 32 is formed with a mounting hole 32h penetrating in the direction connecting the surfaces 22a and 22b.

  With the insulator replacement tool 1 attached to the gusset plate 13, the side 13c of the gusset plate 13 is inserted into the space 32s, and the side of the gusset plate 13 faces the surface 31a of the protruding portion 31 facing the second fixed portion 4 side. 13c is locked. Specifically, the side 13 c of the gusset plate 13 is locked to the lower end portion of the surface 31 a of the protruding portion 31.

  The second fixing portion 4 is provided at one end portion 22 c in the longitudinal direction of the substrate 22. The second fixing portion 4 can be fixed to a side (second side) 13 b disposed below among the sides 13 b and 13 c of the gusset plate 13.

  The second fixing portion 4 includes a protruding portion (second locking portion) 41 protruding from the surface 22 a of the substrate 22 and an extending portion (second insertion portion) 42 extending from the protruding portion 41 and extending toward the first fixing portion 3. And have.

  The extending portion 42 is disposed with a space (second insertion space) 42 s between the surface 22 a of the substrate 22. The extending portion 42 is formed with a mounting hole 42h penetrating in the direction connecting the surfaces 22a and 22b.

  In a state where the insulator replacement tool 1 is attached to the gusset plate 13, the side 13 b side of the gusset plate 13 is inserted into the space 42 s, and the surface 41 a of the protruding portion 41 facing the first fixed portion 3 is placed on the surface 41 a of the gusset plate 13. The side 13b can be locked. Specifically, the side 13 b of the gusset plate 13 is locked to the upper end portion of the surface 41 a of the protruding portion 41.

  The first tightening portion 5 includes a male screw portion 51 screwed into the mounting hole 32h of the first fixing portion 3, and an adjustment portion 52 that adjusts the male screw portion 51 so that the male screw portion 51 can be advanced and retracted by rotating the male screw portion 51. Have. The adjustment part 52 is adjusted so that the male screw part 51 can be advanced and protruded into the space 32s. After the insulator replacement tool 1 is locked to the gusset plate 13, the front end portion of the male screw portion 51 can be brought into contact with the gusset plate 13 to press the gusset plate 13 toward the substrate 22.

  The second tightening portion 6 includes a male screw portion 61 screwed into the mounting hole 42h of the second fixing portion 4, and an adjustment portion 62 that rotates the male screw portion 61 so as to adjust the male screw portion 61 so as to advance and retreat. Have. The adjusting portion 62 is adjusted so that the male screw portion 61 can be advanced and protruded into the space 42s. After the insulator replacement tool 1 is locked to the gusset plate 13, the distal end portion of the male screw portion 61 can be brought into contact with the gusset plate 13 to press the gusset plate 13 toward the substrate 22.

  The ring bolt 7 </ b> A is provided at the end 22 d on the other side in the longitudinal direction from the first fixing portion 3. The ring bolt 7B is provided closer to the end 22d than the ring bolt 7A. The ring bolt 7C is provided on the end 22d side.

  Each ring bolt 7A, 7B, 7C has a bolt base 71 screwed into the substrate 22 and an annular portion 72 extending from the bolt base 71 and formed in an annular shape when viewed from the longitudinal direction of the substrate 22. (See ring bolt 7B in FIG. 2).

  As shown by a two-dot chain line in FIG. 3, the annular portion 72 of the ring bolts 7A, 7B, 7C includes a hook (locking member) H1 of the safety rope R1 and a hook (locking member) of the wire tensioner (shimler) S. ) S1, a hook (locking member) H2 through which the rope R2 tied to the insulator 19 (see FIG. 1) is passed can be locked.

Next, a method for exchanging the insulator 19 using the above insulator replacement tool 1 will be described. 5 to 7 are views for explaining a method of replacing the insulator 19 using the insulator replacement tool 1. 6 shows a post-process of FIG. 5, and FIG. 7 shows a post-process of FIG. In FIGS. 5 to 7, three insulators 19 are connected in series.
As shown in FIG. 5, a scaffold 14 is installed on the utility pole 11 (see FIG. 1). As shown in FIGS. 2 to 4, the insulator replacement tool 1 is attached to the gusset plate 13. Specifically, the insulator replacement tool 1 is arranged on the corner 13d side (downward) of the gusset plate 13, and the sides 13c and 13b side of the gusset plate 13 are inserted into the spaces 32s and 42s, respectively. The insulator replacement tool 1 is raised upward along the gusset plate 13. And the insulator replacement tool 1 is installed in the position where the surfaces 31a and 41a of the protrusions 31 and 41 of the insulator replacement tool 1 are respectively locked to the sides 13c and 13b of the gusset plate 13. In a state where the insulator replacement tool 1 is locked to the gusset plate 13, the adjustment portions 52 and 62 of the first tightening portion 5 and the second tightening portion 6 are adjusted, and the leading end portions of the male screw portions 51 and 61 are adjusted. The gusset plate 13 is pressed against the scissor replacement tool 1 and the scissor replacement tool 1 is attached to the gusset plate 13. In addition, it is preferable to arrange the insulator replacement tool 1 along a substantially horizontal plane.

  Next, as shown in FIG. 5, the hook H <b> 1 of the safety rope R <b> 1 attached to the worker H is engaged with the ring bolt 7 </ b> A of the insulator replacement tool 1.

  Next, the hook S1 of the wire tensioner S is locked to the ring bolt 7B of the insulator replacement tool 1, the electric wire E is supported by the wire tensioner S, the electric wire E is pulled up, and The load of the electric wire E is borne.

  Next, the hook H <b> 2 for the rope R <b> 2 is scratched and locked to the ring bolt 7 </ b> C of the replacement tool 1. One end of the rope R2 is tied to a barb 19A (hereinafter, the existing barb 19 before replacement may be referred to as barb 19A), and the rope R2 is passed through the hook H2. A work assistant (not shown) on the ground holds the other end of the rope R2.

  Next, as shown in FIG. 6, the worker H on the scaffold 14 removes the insulator 19 </ b> A from the gusset plate 13. The work assistant on the ground holds the rope R2 and supports the load of the insulator 19A. The worker H on the scaffold 14 guides the rope R2 so that the insulator 19A reaches the work assistant on the ground.

  When the insulator 19A reaches the work assistant on the ground, the old insulator 19A is removed from one end of the rope R2, and the new insulator 19B (hereinafter, the replaced insulator 19 after replacement may be used as the insulator 19B). 7) is tied to one end of the rope R2. The work assistant on the ground pulls the other end of the rope R2 to support the load of the insulator 19B and raises the insulator 19B. At this time, the worker H on the scaffold 14 guides the rope R2 so that the insulator 19B is at hand.

  As shown in FIG. 7, when a new insulator 19 </ b> B reaches the worker H on the scaffold 14, the insulator 19 </ b> B is attached to the gusset plate 13. Until the insulator 19B is attached to the gusset plate 13, the work assistant on the ground holds the rope R2 and supports the load of the insulator 19B.

  Next, the worker H on the scaffold 14 causes the insulator 19B to support the electric wire E. The tensioner S is adjusted, the electric wire E is returned to the original position, and the tensioner S is removed from the electric wire E. In this way, the insulator 19 is replaced.

  In the insulator replacement tool 1 configured as described above, the first replacement part 3 is fixed to the side 13 c of the gusset plate 13 and the second fixing part 4 is fixed to the side 13 b of the gusset plate 13. 1 is fixed to the gusset plate 13. In this state, the hook S1 of the wire tensioner S is locked to the ring bolt 7B of the replacement tool 1 and the wire tensioner S is adjusted, so that the electric wire E supported by the insulator 19 is temporarily attached to the wire tensioner S. Can be supported. Conventionally, the worker on the scaffold had to replace the insulator while holding the electric wire. However, the worker H on the scaffold needs to hold the electric wire E by using the insulator replacement tool 1. The workability is good because it is possible to concentrate on the replacement work of the insulator 19.

  Further, the hook H2 is locked to the ring bolt 7C of the scissor replacement tool 1, the rope R2 is tied to the scissor 19, and the rope R2 is passed through the hook H2. As a result, the work assistant on the ground can support the dead weight of the insulator 19 with the rope R2, and can perform the lowering operation of the old insulator 19A and the lifting operation of the new insulator 19B. Conventionally, the worker on the scaffold had to support the insulator, and the burden of the work was large, but by using the insulator replacement tool 1, the worker H on the scaffold does not need to support the insulator 19 The workability is good because it is only necessary to guide the rope when raising and lowering the insulator 19.

  Moreover, the work of attaching the new insulator 19 to the gusset plate 13 by supporting the load of the insulator 19 on the insulator replacement tool 1 can be performed. Conventionally, the worker had to perform the installation work of the insulator while supporting the insulator. However, by using the insulator replacement tool 1, the operator H does not need to hold the insulator 19, and the insulator 19 Workability is good because you can concentrate on installation work.

  Moreover, if the sides 13c and 13b of the gusset plate 13 are inserted into the spaces 32s and 42s, respectively, and the sides 13c and 13b are engaged with the surfaces 31a and 41a of the protrusions 31 and 41, respectively, the insulator replacement tool 1 is obtained. Fixed to the gusset plate 13. Therefore, the insulator replacement tool 1 can be easily attached to the gusset plate 13.

  In addition, the ring bolts 7A, 7B, and 7C provided on the end 22d side of the main body 2 support the safety rope R1, the tensioner S that temporarily holds the electric wire E, and the rope R2 that supports the insulator 19, respectively. Due to the weight of the electric wire E insulator 19 (arrow A1 shown in FIG. 2), a downward force (arrow A2 shown in FIG. 2) acts on the first fixing portion 3 near the end 22d of the main body 2, and the first fixing. The surface 31 a of the part 3 is securely locked to the side 13 c of the gusset plate 13. Further, an upward force (arrow A3 shown in FIG. 2) acts on the second fixing portion 4 provided on the opposite end 22c side of the main body 2, and the surface 41a of the second fixing portion 4 is formed on the gusset plate 13. It is securely locked to the side 13b.

  The ring bolts 7A and 7C are provided on the surface 22b of the main body 2, and the ring bolt 7B is provided on the surface 22a of the main body 2. That is, since the ring bolts 7A, 7B, 7C are provided on both surfaces of the main body 2, even if the hooks H1, S1, H2 are locked to the ring bolts 7A, 7B, 7C, the adjacent locking members H1, H2 There is no interference between them.

  Moreover, since the safety rope R1 is supported by the insulator replacement tool 1 and the safety rope R1 can be attached at a position higher than the waist of the worker H, the safety is high.

  The various shapes and combinations of the constituent members shown in the above-described embodiments are merely examples, and various changes can be made based on design requirements and the like without departing from the spirit of the present invention.

  For example, in the embodiment described above, the ring bolts 7A, 7B, and 7C have been described as examples of the member locking portion. However, the shape of the member locking portion can be set as appropriate, for example, a U shape or a J shape. It may have a shape or the like.

  Further, in the embodiment shown above, the ring bolts 7A, 7B, and 7C are respectively locked with the hook H1 of the safety rope R1, the hook S1 of the tensioner S, and the hook H2 of the rope R2 tied to the insulator 19. However, the present invention is not limited to this. The member latching part should just be provided in one or more places, and the hook latched by the member latching | locking part can be set suitably.

1 ... insulator replacement tool 2 ... main body (base)
3 ... First fixing part (upper fixing part)
4 ... Second fixing part (lower fixing part)
5 ... 1st tightening part 6 ... 2nd tightening part 7A, 7B, 7C ... Ring bolt (member locking part)
11 ... Telephone pole 12 ... Arm metal 13 ... Gusset plate 13b ... Side (second side)
13c ... side (first side)
13d ... Corner (one vertex)
22a ... surface (first surface)
22b ... surface (second surface)
31 ... Projection (first locking part)
32 ... Extension part (first insertion part)
32s ... space (first insertion space)
41. Projection (second locking part)
42 ... Extension part (second insertion part)
42s ... space (second insertion space)
E ... Electric wires H1, H2, S1 ... Hook (locking member)

Claims (4)

An insulator replacement tool for use in replacing the insulator provided at one apex of the gusset plate having a substantially triangular shape,
A base that extends along one direction and is arranged so as to intersect two sides forming the one vertex of the gusset plate;
An upper fixed portion fixed to a first side disposed above the two sides of the gusset plate;
A lower fixing portion fixed to a second side disposed below the two sides of the gusset plate;
A scissor replacement tool, comprising: a member locking portion provided on the base and capable of locking the locking member. The upper fixing part is
A first locking portion for locking the first side of the gusset plate;
A first insertion portion that is provided continuously with the first locking portion, and that forms a first insertion space through which the first side of the gusset plate is inserted, and the base portion;
The lower fixing portion is
A second locking portion for locking the second side of the gusset plate;
A second insertion portion that is provided continuously with the second locking portion and forms a second insertion space through which the second side of the gusset plate is inserted between the second engagement portion and the base portion. The insulator replacement tool according to claim 1.   The lower fixing portion is disposed on one side of the base in the one direction with the gusset plate interposed therebetween, and the upper fixing portion and the member locking portion are disposed on the other side of the base in the one direction. The insulator replacement tool according to claim 1, wherein the insulator replacement tool is provided.   The member locking portion is provided at a plurality of locations, and is provided on a first surface of the base portion facing the gusset plate side and a second surface of the base portion opposite to the first surface. The insulator replacement tool according to any one of claims 1 to 3.

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