TW202007037A - Insulator separation method, utility pole suspension device used in said method, insulator support tool, tool for fixing to utility pole, and hanging/suspension tool - Google Patents

Abstract

Provided are: an insulator separation method with which it is possible to safely separate a plurality of strain insulators arranged at different heights without changing the position of a device used in the operation; a utility pole suspension device used in the method; an insulator support tool; a tool for securing the insulator to a utility pole; and a hanging/suspension tool. In this insulator separation method for removing an unnecessary strain insulator from overhead cables when three three-phase AC power lines are disposed at different heights, first a branch path that includes a wire-tensioning device is formed in parallel with the insulator, and insulator-side tension is alleviated. After the tension applied to the insulator has been alleviated, a connection portion of the insulator is supported by an insulator support tool 150 having an insulator engagement part 154 at the distal end thereof. The connection portion of the insulator is detached in a state in which the insulator is supported by the insulator support tool 150, and a belt 4 for suspending a utility pole suspension device 1 is connected to a central position on a support rod of the insulator support tool 150. The insulator is raised up by the utility pole suspension device 1 at a position higher than that of the utility pole suspension device 1 and detached while supported in an ancillary manner by the insulator support tool 150.

Description

Insulation barrier separation method and post lifting device used in the method, insulation barrier support tool, tool for fixing poles, and hanging tool

The invention relates to an insulation barrier separation method for separating a tension-resistant insulation barrier from a wire erection, a post lifting device, an insulation barrier support tool, a tool for fixing an electric pole, and a suspension tool used in the method.

In order to insulate the overhead electric wire (hereinafter referred to simply as an electric wire) from the support structure, insulating insulators of various shapes are used. Among these, when connected to the support structure such as a telephone pole or an iron tower, when connected to the tension direction of the electric wire, a tension-resistant insulating barrier is used. The tension-resistant insulating barrier is generally formed by connecting a plurality of insulating barriers in series by connecting metal pieces.

Although there is also a structure that safely discharges a large current as a countermeasure against lightning strikes, there is a case where insulation breakdown occurs between the support structure and the electric wire, resulting in damage to the tension-resistant insulation barrier.

In such a case, although the damaged tension-resistant insulating element must be replaced, as described above, not only will the weight increase and the overall shape is not fixed when forming a plurality of connected parts, so in Operation at height is difficult.

In the replacement operation, first, the tension applied to the tension-resistant insulating barrier must be released.

FIG. 23 shows a conventional replacement method of the tension-resistant insulating barrier 317. The tension-resistant insulating barrier 317 is arranged in the opposite direction via the metal cross 314. In Fig. 23, it is shown that one of these parties has been replaced. Here, in order to relax the tension applied to the tension-resistant insulating barrier 317, the tension relaxation device 310 is used.

The tension relaxation device 310 includes a tension support rod 311 that functions as a support rod, and a tension operation member 312 that swingably supports the tension support rod 311.

One end of the tension support rod 311 is fixed to the metal cross arm 314 side, and the tension operation member 312 is connected to the high-voltage wire 316 via a tension clamp 315. In such a configuration, if the tension operating member 312 is swung with respect to the metal cross 314 side, the tension applied to the tension-resistant insulating barrier 317 is released, and the tension is transferred to the tension support rod 311 side. While maintaining this state, the replacement operation of the tension-resistant insulating barrier 317 is performed.

The disassembled tension-resistant insulating barrier 317 is placed on the spreader 313 and removed. The method of replacing such a tensile-resistant insulation barrier is described in Patent Document 1.

[Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2016-149828

However, although the tension-resistant insulating barrier 317 shown in FIG. 23 is a structure that connects the two together, in a higher voltage device, the number of connected tension-resistant insulating barriers increases. In addition, each tension-resistant insulating barrier 317 will also be enlarged. Therefore, when the configuration shown in FIG. 23 is adopted, the spreader 313 will be enlarged in size in conjunction with the tension-resistant insulating barrier 317 to be removed.

That is, in the demolition operation, in addition to the tension-resistant insulating barrier 317, a sling 313 corresponding to the size must be provided. Cranes are also inevitably required for the ability to lift high-weight objects, and it is inevitable to enlarge the device.

Under such circumstances, it is difficult to introduce a large crane when working in a narrow roadway or the like.

In addition, when the hoisting device is installed on the column to avoid the ground, since it is necessary to control the spreader used to support the tension-resistant insulating obstacle to be replaced, there is not only a problem of installation in a crowded environment , And it is difficult to work safely.

In addition, when a plurality of tension-resistant insulating elements are not provided at the same height, the ability to move in the height direction becomes more important. However, it is not easy to have a compact design with both the size and weight of the suppression device, and to have sufficient movement capability in the height direction.

Therefore, an object of the present invention is to provide an insulation barrier separation method for separating a plurality of tension-resistant insulation barriers provided at different heights without changing the position of a device used for work, and a method used by the method Lifting device on the pole, supporting tool for insulating obstacles, tool for fixing the pole, and hanging tool.

In order to achieve the above object, the insulation barrier separation method of the present invention uses a cable tensioning device and a post lifting device to separate the insulation barrier for tension from the overhead wire; it is characterized by including: The step of switching the branch path including the cable tensioning device formed in parallel with the insulation obstacle; the step of supporting the insulation obstacle from below with an insulation obstacle support tool; The step of connecting the wire to the supporting tool of the insulating barrier; and the step of releasing the connection of the insulating barrier that has been lifted by the lifting device on the column while being supported by the supporting tool of the insulating barrier.

In addition to the above configuration, the insulation barrier separation method of the present invention is characterized in that the step of switching the tension toward the branch path includes the step of grasping the overhead wire with one end of the cable tensioning device; The step of suspending the hanging tool that hangs the other end of the cable tensioning device on the overhead wire; the step of connecting the other end of the cable tensioning device to the suspending tool; fixing the suspending tool to the The step of fixing the utility pole to the utility pole fixed to the utility pole; and the step of shrinking the interval between one end and the other end of the cable tensioning device.

In addition, the column lifting device of the present invention is used by the above-mentioned insulation barrier separation method; it is characterized by having: an insulation barrier engaging portion, which can be engaged with the insulation barrier; an operating rod, which enables The insulating barrier engaging portion hangs from the front end, and indirectly operates the suspended insulating barrier engaging portion; and a direction changing tool that installs the operating rod to a metal rail of the telephone pole in a reversible direction.

Furthermore, in addition to the above-mentioned configuration, the column lifting device of the present invention is characterized in that the direction changing tool includes: a metal crossarm mounting portion, which has an insertion hole formed along the vertical direction and can be mounted on the metal crossarm; And a swivel portion, which has an insertion portion that is rotatably inserted into the insertion hole of the metal cross arm mounting portion, and has an operation rod fixing portion that fixes the operation rod.

Moreover, in addition to the above-mentioned configuration, the column lifting device of the present invention is characterized in that the metal crossarm mounting portion is provided with: an upper abutment portion that abuts on the metal crossarm; and a vertical installation portion, which is The vicinity of the upper contact portion is vertically arranged downward; the opposite portion is extended from the vertical installation portion to a position opposed to the upper contact portion; the interval fixing tool can fix the upper contact portion The distance from the facing portion; and the lifting portion, which is provided on the facing portion in a configuration that can be raised and lowered toward the upper contact portion.

Furthermore, in addition to the above-mentioned configuration, the column lifting device of the present invention is characterized in that the metal crossarms formed by angle steel with a surface directed vertically downward are formed on the side of the vertical installation portion of the lifting portion The edge holding portion into which the lower edge is inserted.

In addition, the supporting tool for insulating obstacles of the present invention is in the above-mentioned isolation method of insulating obstacles, and can be combined with a lifting device for lifting the insulating obstacles to be used by the user; it is characterized by having: a support rod at one end It has a gripping part; an insulating member engaging part, which is provided at the other end of the above-mentioned support rod, and can be engaged with the connecting part of the insulating member; and a wire connecting part, which is provided at the insulating member engaging part And between the above gripping parts, it can be connected with the above wire.

Furthermore, in addition to the above-mentioned configuration, the insulating tool support tool of the present invention is characterized in that the position of the wire connecting portion can be changed between the insulating tool engaging portion and the grip portion.

In addition, the tool for fixing a utility pole according to the present invention is used for fixing a cable tensioning device for tensioning an overhead wire to a utility pole, which is used in the above-mentioned insulation barrier separation method; it is characterized by having: The bent portion has an inner diameter of the same degree as the outer diameter of the above-mentioned telephone pole, and is formed into an arc shape with an elastic material having a length exceeding half the circumference of the above-mentioned telephone pole; One end is extended; and a hanging rope portion, which is provided at the other end of the curved portion, hangs the rope-like body.

In addition to the above-mentioned configuration, the tool for fixing a utility pole according to the present invention is characterized in that the rope-shaped body and the hanging rope portion are composed of a single member along the curved portion.

In addition, the hanging tool of the present invention is used in the above-mentioned insulation barrier separation method to suspend the other end of the cable tensioning device that grips the erecting wire at one end from the erecting wire; it is characterized by having: insulation Rod, which has a connecting structure at both ends; at least one base portion, which is fixed to the above-mentioned insulating rod; and a suspension portion, which has two engaging bodies respectively facing the wire receiving sides of each other along virtual planes separated in parallel The direction is configured as one body, and is pivotally supported relative to the base portion so as to be rotatable between the two engagement bodies as a center.

As described above, according to the separation method of the insulation obstacle of the present invention, since the insulation obstacle is lifted by the insulation obstacle support tool connected to the lifting device on the column, it can be moved relative to the height direction of the lifting device on the column Area, lift the insulation barrier to the height plus the length from the lifting position of the insulation barrier support tool to the end. With this, even a small column lifting device can perform a wide range of operations beyond its own height. In addition, since the lifting operation is carried out while being supported by the insulating tool support tool, even in a crowded working environment, it can be flexibly avoided without interfering with peripheral devices, and the work can be performed safely. In addition, when the connection is released, the load of the insulation barrier can be temporarily transferred to the side of the lifting device on the column, so that the burden on the operator who operates the support tool of the insulation barrier can be reduced.

In addition, according to the insulation barrier separation method of the present invention, in addition to the above-mentioned effects, since the cable tensioning device and the tool for fixing the utility pole are connected via the hanging tool suspended from the overhead wire, it can be individually performed The operation of connecting the cable tensioning device and the tool for fixing the telephone pole to the hanging tool. By this, the operation on the column can be performed in a stable state. In addition, after the tension is switched toward the branch path, conversely, since the overhead wire that has lost tension can be hung with a hanger, it is possible to prevent the overhead wire when the insulation barrier is separated without using a holding tool or the like.

In addition, according to the column hoisting device of the present invention, since the operation rod is installed on the metal crossarm via the direction changing tool capable of changing the direction, it is possible to flexibly perform a wide range of operations using the direction changing tool as a fulcrum.

In addition, according to the column lifting device of the present invention, in addition to the above-mentioned effects, since the insertion hole and the insertion portion extending in the vertical direction are rotatably arranged, the movement in the horizontal direction is relatively stable.

In addition, according to the column lifting device of the present invention, in addition to the above-mentioned effects, of the four directions of the periphery of the metal cross arm of the metal cross arm mounting portion, three directions are formed by the upper contact portion, the vertical installation portion, and the opposite portion Surrounding, the remaining contact direction and the opposing portion are closed by the interval fixing portion in the remaining direction. In this way, if the interval fixing tool is opened, the accommodating of the metal cross arm becomes easier. In addition, when the lifting section applies pressure to the metal crossarm to fix it, if the interval fixing tool is closed, the deformation of the upper abutting section and the opposing section can be prevented, and the pushing force can be effectively exerted. Corresponding to the degree of strength increase that can be expected due to the interval fixing tool, the weight of the upper abutment portion etc. can be reduced.

In addition, according to the column lifting device of the present invention, in addition to the above-mentioned effects, by the edge holding portion into which the lower edge of the angle steel is inserted, one surface of the angle steel extending vertically downward can be stably held toward the vertical installation portion side. With this, the rotation of the lifting device on the column centered on the metal crossarm can be prevented, and the load resistance to the work object can be improved.

In addition, according to the supporting tool for insulating obstacles of the present invention, since the supporting rod has the wire connecting portion of the wire of the lifting device on the connecting post between the grip portion and the engaging portion of the insulating obstacle, most of the weight can be loaded The insulating obstacle and the insulating obstacle support tool itself are stably supported in a state where it is temporarily transferred to the lifting device side of the column.

In addition, according to the insulating obstacle support tool of the present invention, in addition to the above-mentioned effects, the wire connecting portion is configured to be able to change the position between the insulating obstacle engaging portion and the grip portion, except for selecting the working height position according to the situation And the position of the center of gravity can be adjusted to stabilize the operation.

Further, according to the tool for fixing a utility pole of the present invention, since the bent portion of the tool for fixing a utility pole is formed in an arc shape whose length exceeds half of the circumference of the utility pole, it can be easily attached to the utility pole from the side. In addition, since the bent portion is formed of an elastic member having an inner diameter about the same as the outer diameter of the electric pole, it can be easily temporarily fixed as long as it is pushed into the electric pole with elastic deformation. In addition, in the temporarily fixed state, as long as the rope-shaped body extending from one end of the bent portion is hung through the hanging rope portion at the other end, it can be changed into a state of formal fixation by fastening. That is, it can be fastened and fixed to the utility pole by the tension acting from the outside.

In addition, according to the tool for fixing a telephone pole of the present invention, in addition to the above-mentioned effects, since the rope-shaped body and the hanging rope portion are constituted by a single member along the curved portion, in addition to uniformly dispersing the load of the tension, it is also possible It can be easily constructed while suppressing the increase in the number of parts.

In addition, according to the hanging tool of the present invention, the suspension portion is pivotally supported relative to the base portion fixed to the insulating rod. Moreover, the suspension part is arrange|positioned so that the electric wire accommodating side of two engagement bodies may mutually oppose, and may divide these engagement bodies in parallel. Thereby, the overhead wire accommodated between the two engaging bodies of the suspension part can be engaged with the suspension part by rotation below 180 degrees. In this way, since it is not accompanied by delicate operations such as tightening operations, it is possible to improve the efficiency of operations by remote operation.

1‧‧‧Pile lifting device

2‧‧‧Operation stick

4‧‧‧Belt

6‧‧‧Belt connector

8‧‧‧Insulation blocking part

10‧‧‧coiling device

12‧‧‧handle

12a‧‧‧head bolt

30‧‧‧Direction conversion tool

32‧‧‧Clamping part (metal cross arm mounting part)

34‧‧‧Horizontal clamping part

34a‧‧‧butt plate

34b‧‧‧Horizontal guide hole

36‧‧‧Clamping claw

37‧‧‧Butterfly screw

38‧‧‧Guide pins

40‧‧‧Vertical side clamping part

42‧‧‧Guide plate

42a‧‧‧Vertical guide hole

44‧‧‧Lifting claw

46‧‧‧Screw

48‧‧‧Nut

50‧‧‧swing department

52‧‧‧Operation rod fixing part

54‧‧‧Pitch angle adjustment section

54a‧‧‧Jack bolt

54b‧‧‧Long hole

54c‧‧‧Link pin

60‧‧‧Direction conversion tool

62‧‧‧Clamping part (metal cross arm mounting part)

64‧‧‧Upper abutment

64a‧‧‧insert hole

64b‧‧‧sliding part

66‧‧‧Lower contact part

66a‧‧‧Angle Steel Retaining Department

66b‧‧‧Square Pipe Retaining Department

70‧‧‧swing department

72‧‧‧Operation rod fixing part

74‧‧‧Insert Department

90‧‧‧Direction conversion tool

92‧‧‧Clamping part (metal crossarm mounting part)

94‧‧‧Upper contact part

94a‧‧‧Insert hole

96‧‧‧Vertical Installation Department

98‧‧‧ Counterpart

98a‧‧‧Guiding wall

100‧‧‧Interval fixing tool

100a‧‧‧head bolt

102‧‧‧ Lifting Department

102a‧‧‧Head bolt

102b‧‧‧butt plate

102c‧‧‧End Holder

102d‧‧‧Screw head

104‧‧‧ Roundabout

106‧‧‧Operation rod fixing part

108‧‧‧Insert

108a‧‧‧Kahegou

110‧‧‧Fixed pin

112‧‧‧Control film

120‧‧‧Angle steel installation tool

122‧‧‧Insert board

124‧‧‧support shaft (insertion hole)

124a‧‧‧Locating hole

126‧‧‧Upper clamp

126a‧‧‧fixing bolt

126b‧‧‧arm

126c‧‧‧Fixed pin

126d‧‧‧Joint Department

128‧‧‧ Lower fixture

128a‧‧‧fixing bolt

128b‧‧‧arm

128c‧‧‧Fixed pin

128d

150‧‧‧Insulation support tool

152‧‧‧support rod

152a‧‧‧Control Department

154‧‧‧Insulation blocking part

154a‧‧‧Hook

154b‧‧‧Suspension hole

156‧‧‧Occlusion Department

156a‧‧‧Occlusion rod

156c‧‧‧Joint Department

158‧‧‧Wire connection

158b‧‧‧Suspension hole

160‧‧‧Dewatering Department

180‧‧‧Tools for fixing poles

182‧‧‧Bend

182a‧‧‧Guide film

184‧‧‧Rope-shaped body

184a‧‧‧Hanging rope department

184b‧‧‧Extended installation section

186‧‧‧Strap

188‧‧‧Control Department

188a‧‧‧recess

190‧‧‧Circular Processing Department

210‧‧‧Hanging tool

212‧‧‧Extended setting stick

214‧‧‧base

216‧‧‧ Suspension Department

217, 218‧‧‧

218a‧‧‧rotation prevention section

220, 221‧‧‧ Connection Department

222‧‧‧Joint Department

240‧‧‧Jumper retention tool

242‧‧‧Insulation rod

244‧‧‧Install metal parts

246‧‧‧Wire locking tool

246a‧‧‧Snap fit

270‧‧‧Cable tensioning device

270a‧‧‧Thread catcher

270b‧‧‧Tensioner

300‧‧‧Insulation barrier (tension-resistant insulation barrier)

301‧‧‧Wire (overhead wire)

301a‧‧‧Jumper

302‧‧‧ Telephone pole

303, 303a‧‧‧Metal crossarm

304‧‧‧ holding tools

310‧‧‧tension relaxation device

311‧‧‧Tension support rod

312‧‧‧Tension operating member

313‧‧‧Sling

314‧‧‧Metal crossarm

315‧‧‧Retaining fixture

316‧‧‧High voltage line

317‧‧‧Insulation resistance to tension

X‧‧‧axis

H‧‧‧High and low difference

P1, P2‧‧‧Virtual plane

Fig. 1 is an overall perspective view of the lifting device on the bollard.

Fig. 2 is a direction conversion tool with a pitch angle adjustment function, Fig. 2(a) is a front view, Fig. 2(b) is a rear view, Fig. 2(c) is a top view, and Fig. 2(d) is a bottom view, Fig. 2 (e) is a right side view, and FIG. 2(f) is a left side view.

Fig. 3 is a revolving part configured as a detachable and changeable pitch direction changing tool, Fig. 3(a) is a front view, Fig. 3(b) is a rear view, Fig. 3(c) is a top view, and Fig. 3(d ) Is a bottom view, FIG. 3(e) is a right side view, and FIG. 3(f) is a left side view.

FIG. 4 is a direction conversion tool of FIG. 3, FIG. 4(a) is a left side view, and FIG. 4(b) is a central longitudinal cross-sectional view taken along line A-A of FIG. 4(a).

Fig. 5 is a direction changing tool that can be attached and detached and the pitch angle is fixed. Fig. 5(a) is a front view, Fig. 5(b) is a rear view, Fig. 5(c) is a top view, and Fig. 5(d) For bottom view, FIG. 5(e) is the right side view, and FIG. 5(f) is the left side view.

Fig. 6 is a direction conversion tool of Fig. 5, Fig. 6(a) is a left side view, and Fig. 6(b) is a central longitudinal sectional view taken along line B-B shown in the left side view of Fig. 6(a).

7 is an overall perspective view of the direction conversion tool of FIG. 5.

8 is an overall perspective view showing the operation of the movable portion of the direction changing tool of FIG. 5.

9 is an exploded view of the direction conversion tool of FIG. 5.

Fig. 10 is an installation tool for angle steel, Fig. 10(a) is a front view, Fig. 10(b) is a rear view, Fig. 10(c) is a top view, Fig. 10(d) is a bottom view, and Fig. 10(e) is Right side view, Fig. 10(f) is the left side view, and Fig. 10(g) is the perspective view.

Fig. 11 is an installation tool for the corner steel of Fig. 10, Fig. 11(a) is a left side view, and Fig. 11(b) is a central longitudinal sectional view cut by CC of Fig. 11(a), Fig. 11(c) 11(b) is a cross-sectional view taken along line DD of FIG. 11(d) is a cross-sectional view taken along line EE of FIG. 11(b), and FIG. 11(e) is a right side view, 11(f) is an explanatory diagram of the operation when viewed from above.

Fig. 12 is a perspective view of an insulating obstacle supporting tool.

FIG. 13 is an enlarged view of the insulating block engaging portion installed in the insulating block support tool of FIG. 12.

14 is an enlarged view of the wire connecting portion of the insulating tool support tool of FIG. 12 and its surroundings.

Fig. 15 is a view showing the use state of the insulating obstacle supporting tool of Fig. 12.

Fig. 16 is a perspective view of a tool for fixing a telephone pole.

Fig. 17 is a view showing a state of use of the tool for fixing a telephone pole in Fig. 16.

Figure 18 is a perspective view of a hanging tool.

Fig. 19 shows the suspension part and its surroundings of the hanging tool of Fig. 18, Fig. 19(a) is a view showing the opened state of the suspension part, and Fig. 19(b) is a view showing the engaged state of the suspension part.

FIG. 20 is a diagram showing a state of use of a tool for fixing a telephone pole and a hanging tool.

Fig. 21 is a jumper holding tool, Fig. 21(a) is a front view, Fig. 21(b) is a rear view, Fig. 21(c) is a top view, Fig. 21(d) is a bottom view, and Fig. 21(e) is a right side View, FIG. 21(f) is a left side view, and FIG. 21(g) is a perspective view.

Fig. 22 is a jumper wire holding tool of Fig. 21, Fig. 22(a) is a top view, and Fig. 22(b) is a longitudinal sectional view taken along line F-F of Fig. 22(a).

Fig. 23 is a diagram showing a conventional method for replacing a tension-resistant insulating barrier.

Hereinafter, the direction changing tool of the embodiment of the present invention, the post lifting device, the insulating obstacle supporting tool, the tool for fixing the electric pole, and the hanging tool will be described using drawings.

<Lifting device on column>

FIG. 1 shows an overall perspective view of the post lifting device 1. The post lifting device 1 is provided with: an insulation barrier engaging portion 8 that hooks a tension-resistant insulation barrier 300 (described later in FIG. 15) as an operation target; an operation rod 2 that operates the insulation barrier to engage Part 8; and a direction changing tool 30, which rotatably fixes the post lifting device 1 itself to the metal crosspiece 303 of the telephone pole. The operating rod 2 is hollow-molded by FRP (Fiber Reinforced Plastics) material, and its intermediate position is grasped by the direction changing tool 30 described in detail later. Although the metal crosshead 303 uses angle steel, square pipe, etc., the metal crosshead 303 of the angle steel is used as an example for description. Such a column lifting device 1 can be used not only for the tension-resistant insulating barrier 300 to be replaced, but also for hanging other tools and equipment during the replacement work of the tension-resistant insulating barrier 300.

The insulating member engaging portion 8 is suspended by the belt 4. The belt 4 extends to the inside of the operating rod 2 and is taken up by the take-up device 10 provided at the intermediate position. The winding device 10 is provided with a ratchet handle 12 having an eye bolt 12a for locking at the front end. By hooking the eye bolt 12a and moving it up and down by remote operation, the belt 4 can be taken up or sent out.

<Direction Conversion Tool 1>

Next, the direction conversion tool 30 described in the description of FIG. 1 will be described.

FIG. 2 shows a direction conversion tool 30 with a pitch angle adjustment mechanism. 2(a) shows a front view, FIG. 2(b) shows a rear view, FIG. 2(c) shows a top view, FIG. 2(d) shows a bottom view, FIG. 2(e) shows a right side view, and FIG. 2(f) Indicates the left side view. The direction changing tool 30 is composed of a holding portion 32 (metal cross arm mounting portion) attached to the metal cross 303, and a turning portion 50 capable of turning horizontally relative to the holding portion 32.

First, the clamping portion 32 will be described.

The clamping portion 32 of the direction changing tool 30 is configured to be mounted on the metal crosspiece 303 of the angle steel material (refer to FIG. 1 ). The clamping portion 32 is composed of a horizontal clamping portion 34 that fixes the angle steel material in the horizontal direction, and a vertical clamping portion 40 that fixes the angle steel material in the vertical direction.

The horizontal clamping portion 34 of the clamping portion 32 has a substantially flat contact plate 34a that abuts on the upper surface of the metal crosspiece 303 (see FIGS. 2(a) and (c)). The contact plate 34a is formed with three parallel long holes to form horizontal guide holes 34b (see FIG. 2(c)). On the lower surface side of the contact plate 34a, a locking claw 36 for locking the horizontal edge of the metal cross 303 is provided (see FIG. 2(a)). The locking claw 36 is fixed by a wing screw 37 penetrating through three central horizontal guide holes 34b. The horizontal guide holes 34b on both sides are arranged in such a manner that guide pins 38 (refer to FIG. 2(c)) for moving the locking claws 36 parallel to the metal cross 303 are inserted. In this way, the horizontal clamping portion 34 can be aligned according to the width of the metal cross 303 in the horizontal direction.

The vertical-side clamping portion 40 of the clamping portion 32 has a lifting claw portion 44 that is locked to the metal cross 303 that is the object of clamping from below (see FIG. 2(a) ). The lifting claw portion 44 is configured to be movable up and down along the vertical guide holes 42a formed on the guide plates 42 arranged on both sides in the vertical direction. At the center of the lifting claw portion 44, a screw 46 is arranged penetratingly (see FIG. 2( e )). The lifting claw portion 44 is placed in a state where the nut 48 attached to the lower end of the screw 46 is placed. Therefore, the lifting claw portion 44 can be raised and lowered by screwing the nut 48 forward and backward relative to the screw 46.

Furthermore, in this embodiment, although the guide plate 42 is shown as an example in which two pieces are provided on both sides of the lifting claw 44, the guide plate 42 is provided to prevent the lifting claw 44 from rotating together. , As long as it is set to any one.

With the holding portion 32 as described above, when the direction changing tool 30 is installed on the metal cross 303, the position of the locking claw 36 of the horizontal side holding portion 34 is previously aligned with the horizontal direction of the metal cross 303 In the state of the width, the contact plate 34a is placed on the upper surface of the metal crossarm 303 (temporarily fixed state). In this state, if the vertical-side clamping portion 40 provided in the vertical direction is locked, the mounting of the metal crossarm 303 is completed (in a state of formal fixation).

Next, the turning part will be described.

The turning portion 50 is provided above the clamping portion 32, and is provided with a turning mechanism for switching the direction in the horizontal plane of the operating rod 2 (see FIG. 1) and a pitch angle adjusting mechanism for adjusting the angle in the vertical direction. A disk-shaped member parallel to the abutment plate 34a of the horizontal clamping portion 34 is formed below the turning portion 50. The turning portion 50 can turn horizontally with the center of the disc-shaped portion as the rotation axis. Above the revolving portion 50, an operation rod fixing portion 52 for holding and fixing the operation rod 2 is provided. The operation rod fixing portion 52 is formed with a space where the operation rod 2 can be received and grasped.

In addition, in the turning portion 50, together with the operation rod fixing portion 52, a pitch angle adjusting portion 54 is provided in order to adjust the pitch angle of the operation rod 2 held and fixed. On the right side of Fig. 2(a), a jack bolt 54a is arranged at a position where the above-mentioned operation rod fixing portion 52 can be jacked up from below. The upper end of the jack bolt 54a is inserted through the connecting pin 54c to be rotatably connected to a connecting long hole 54b (indicated by a broken line) formed below the operation rod fixing portion 52. Since it is structured in this way, as the jacking bolt 54a moves up and down, the connecting pin 54c slides in the connecting long hole 54b, and the pitch angle of the operation rod fixing portion 52 can be smoothly adjusted. In addition, since the lower end of the jack bolt 54a is formed into a hexagonal shape, the pitch angle can be easily adjusted by operating the rotating tool from the lower end.

<Direction Conversion Tool 2>

FIG. 3 shows a direction conversion tool 60 that can be replaced with the direction conversion tool 30 of FIG. 2 and that the swivel is configured to be detachable and can change the pitch angle. 3(a) shows a front view, FIG. 3(b) shows a rear view, FIG. 3(c) shows a top view, FIG. 3(d) shows a bottom view, FIG. 3(e) shows a right side view, and FIG. 3(f) Indicates the left side view. The portion composed of the holding portion 62 attached to the metal cross 303 and the turning portion 70 that can turn horizontally relative to the holding portion 62 is the same as the direction changing tool 30 in FIG. 2. 4(a) is a left side view of the direction changing tool 60, and FIG. 4(b) is a central longitudinal cross-sectional view taken along line A-A shown in the left side view of FIG. 4(a). The directions conversion tool 60 will be described using these FIGS. 3 and 4.

First, the clamping portion 62 will be described.

The clamping portion 62 of the direction changing tool 60 is configured to be mounted on a metal crosspiece 303 (see FIG. 1) of a diagonal steel material or a square tube material. This clamping portion 62 is different from the direction changing tool 30 of FIG. 2, and can be fixed to the metal crosspiece 303 only by a clamping mechanism in the vertical direction. The clamping portion 62 includes an upper abutment portion 64 that abuts above the metal cross 303, a lower abutment portion 66 that abuts from below the metal cross 303, and guides the lower abutment 66 along the vertical direction引之滑部64b. The sliding portion 64b is suspended from the upper contact portion 64 so as to follow one side of the metal cross 303. In addition, the upper contact portion 64 is provided with a cylindrical member in which an insertion hole 64a is formed vertically below.

On the upper side of the lower contact portion 66 of the clamping portion 62, an angle steel material holding portion 66a that holds the lower end of the metal crosspiece 303 holding the angle steel material, and a square pipe material holding portion 66b that holds the lower end of the square pipe material are formed (see FIG. 3( a)). In FIG. 4(b), the angle steel and the square pipe in the state of being held by either of the angle steel material holding portion 66a and the square pipe material holding portion 66b are indicated by broken lines, respectively.

With the clamping portion 62 as described above, it is possible to support two types of metal crossheads 303 for angle steel and square pipes, and since it can be fixed only by clamping in the vertical direction, the work efficiency is improved.

On the other hand, the slewing portion 70 that can be attached to and detached from the holding portion 62 has an insertion portion 74 that is rotatably inserted into the insertion hole 64a. Furthermore, an operation rod fixing portion 72 for fixing the operation rod 2 (see FIG. 1) of the post lifting device 1 is provided. Since the operation rod fixing portion 72 can be bent relatively to the insertion portion 74, the pitch angle of the operation rod 2 can be changed.

<Direction Conversion Tool 3>

FIG. 5 shows a direction conversion tool 90 that can be replaced with the direction conversion tool 30 of FIG. 2 or the direction conversion tool 60 of FIG. 3. In the direction changing tool 90, the turning portion 104 is configured to be detachable, and the pitch angle is fixed. 5(a) shows a front view, FIG. 5(b) shows a rear view, FIG. 5(c) shows a top view, FIG. 5(d) shows a bottom view, FIG. 5(e) shows a right side view, and FIG. 5(f) Indicates the left side view. 6(a) is a left side view of the direction changing tool 90, and FIG. 6(b) is a central longitudinal sectional view taken along line B-B shown in the left side view of FIG. 6(a). FIG. 7 is an overall perspective view of the direction changing tool 90. FIG. 8 is an overall perspective view showing the operation of the movable part of the direction changing tool 90. 9 shows an exploded view of the direction conversion tool 90. These figures 5 to 9 are used for explanation.

First, the clamping portion 92 will be described.

The holding portion 92 of the direction changing tool 90 is configured like a direction changing tool 60 in FIG. 3 to be configured as a metal crosspiece 303 (see FIG. 1) that can be attached to angle steel and square pipes. This clamping portion 92 (metal cross arm attaching portion) can also fix the metal cross arm 303 only by clamping in the vertical direction, as in the direction changing tool 60 of FIG. 3. As shown in FIG. 5( a ), the holding portion 92 is formed in a rectangular frame shape opened on the side (left side of the paper). Among the frame-shaped members, the portion abutting on the upper surface of the metal cross 303 is defined as the upper contact portion 94. In addition, a portion vertically provided downward from the side of the upper contact portion 94 is defined as a vertical installation portion 96. In addition, a portion extending from the vertical installation portion 96 toward the horizontal direction and facing the upper contact portion 94 is referred to as an opposing portion 98.

The spacer fixing tool 100 connects the upper contact portion 94 and the facing portion 98 in such a manner as to close the space for accommodating the metal cross 303. The interval fixing tool 100 is configured such that one end can be screwed into the upper contact portion 94. In this way, by operating the eye bolt 100a provided at the other end, the receiving area of the metal cross 303 can be opened and closed. Independently of the interval fixing tool 100, a lifting portion 102 capable of advancing and retracting toward the upward contact portion 94 is screwed to the facing portion 98.

For a detailed description of the structure of the lifting section 102, refer to FIG. 6. As shown in FIG. 6(b), the elevating portion 102 is composed of an eye bolt 102a and a contact plate 102b rotatably connected to the upper end of the eye bolt 102a. The opposing portion 98 has a guide wall 98a for preventing the abutment plate 102b from rotating together when the head bolt 102a of the lifting portion 102 is rotated. The lifting operation of the lifting portion 102 is performed within a range where the engagement with the guide wall 98a does not disengage (see FIG. 7).

In FIG. 6(b), the metal cross 303 (angle steel) clamped and fixed is indicated by a broken line. As shown in FIG. 6( b ), the contact plate 102 b of the elevating portion 102 is formed on both sides with an edge holding portion 102 c that can accommodate the lower edge of the metal cross 303. Thereby, the metal crossarm 303 in the clamped state is stabilized. In the configuration of the present embodiment, although the edge holding portions 102c are formed on both sides of the abutment wrench 102b, they need only be provided at least on the side of the vertical installation portion. By being provided on both sides, it can be installed from any direction relative to the metal crossarm 303.

In addition, the lifting portion 102 is effective not only for the metal crosspiece 303 of the angle steel material, but also for the metal crosspiece 303 of the square pipe. In the example shown in FIG. 6(b), the screw head 102d protrudes from the contact plate 102b, but if the screw head 102d is aligned with the mounting hole of the pin insulating obstacle formed in the square pipe, etc. , You can prevent offset and set it stably. In addition, if the screw head 102d is embedded in the contact plate 102b, the post lifting device 1 can be fixed at a position where the mounting hole is not formed.

In the holding portion 92 constructed in this way, after the metal crosspiece 303 of the angle steel or square tube is accommodated in the holding portion 92, the lateral opening is closed by the interval fixing tool 100, and the upper abutment portion 94 and the counter The interval between the facing portions 98 is fixed (see FIGS. 7 and 8). In this fixed state, by raising the elevating portion 102 from below to pinch the metal crosspiece 303, the post lifting device 1 is fixed to the metal crosspiece 303. Here, the interval fixing tool 100 prevents the opening between the upper abutting portion 94 and the facing portion 98 from being deformed, thereby preventing the loss of the pushing force obtained by the lifting portion 102. That is, by providing the interval fixing tool 100 responsible for the tensile strength, the standard required for the bending strength of the upper contact portion 94 can be reduced. Thereby, the thickness of the upper contact portion 94 and the like can be suppressed without reducing the strength, and weight reduction is achieved.

Next, the turning unit 104 will be described.

As shown in FIG. 8, the operation rod fixing portion 106 of the swinging portion 104 is configured to open the space for storing the operation rod 2 (see FIG. 1) by a hinge mechanism, so it is the same as the direction changing tool 30 of FIG. 2 The position of the operating rod 2 in the longitudinal direction can be easily changed even with remote operation. As shown in FIG. 9, the turning portion 104 is configured to be able to attach and detach the clamping portion 92. With respect to the insertion hole 94 a formed in the upper contact portion 94 of the clamping portion 92, the insertion portion 108 of the turning portion 104 can be inserted horizontally and arranged. With such a detachable structure, the operation when fixed to the metal crossarm 303 can be performed only by the clamping portion 92, so that the work load can be reduced and the safety can be improved.

Referring to FIG. 9, it can be seen that the insertion portion 108 on the side of the turning portion 104 is formed with an engagement groove 108 a extending in the center in the circumferential direction. By engaging the locking groove 108a with the fixing pin 110 of the locking mechanism provided in the clamping portion 92, the separation can be prevented under unexpected conditions and the safety can be improved.

For this lock mechanism, refer to FIG. 6(b). At a middle position of the insertion hole 94a of the upper contact portion 94, the fixing pin 110 is configured to move forward and backward in a direction orthogonal to the insertion portion 108. The fixing pin 110 is energized by the spring member toward the insertion portion side. In the state shown in FIG. 6( b ), the insertion portion 108 is locked by fitting the front end of the fixing pin 110 into the engagement groove 108 a. Furthermore, the fixing pin 110 is connected with a grip piece 112 that is operated by a lever mechanism. With this, the lock can be released using pliers or the like for remote operation. The engagement groove 108a is formed over the entire circumference of the insertion portion 108, so it does not hinder the turning movement of the turning portion 104 even in the locked state.

<Installation Tool for Angle Steel>

Next, the metal crossarm installation tool for angle steel will be described. FIG. 10 shows an installation tool 120 for angle steel. 10(a) is a front view, FIG. 10(b) is a rear view, FIG. 10(c) is a top view, FIG. 10(d) is a bottom view, FIG. 10(e) is a right side view, and FIG. 10(f) is The left side view, and FIG. 10(g) is a perspective view.

It is known that a metal crossarm 303a formed by combining two angle steel materials. The metal cross arm 303a is formed by aligning the horizontal parts of the two angle steel materials back to back and aligning the vertical parts in the same side. In addition, a small gap is formed between the two angle steels. Such a metal cross arm 303a is indicated by a broken line in FIG. 10(a).

The angle steel installation tool 120 includes an insertion plate 122 into which a gap between two angle steels is inserted. Support shafts 124 are provided on both sides of the insertion plate 122 in the vertical direction. An upper jig 126 and a lower jig 128 are rotatably provided centering on the two support shafts 124. Since the upper jig 126 and the lower jig 128 are configured to be mirror-symmetrical about the insertion plate 122, the upper jig 126 will be described. The upper jig 126 includes an arm 126b rotatably provided around the support shaft 124, a fixing pin 126c that fixes the rotational position of the arm 126b, and an angle steel that can be screwed forward and backward relative to the insertion plate 122 The fixing bolt 126a. Since the fixing bolt 126a is provided with a ring-shaped engaging portion 126d on the side opposite to the insertion plate 122, it can be tightened by remote operation.

Here, in order to explain the fixing pins 126c and 128c, a cross-sectional view of the mounting tool 120 for angle steel is shown. Fig. 11(a) shows a left side view of the angle steel installation tool, FIG. 11(b) shows a central longitudinal cross-sectional view taken along the line CC of FIG. 11(a), and FIG. 11(c) shows FIG. 11(b) ) Is a cross-sectional view taken along line DD, FIG. 11(d) shows a cross-sectional view taken along line EE of FIG. 11(b), and FIG. 11(e) shows a right side view. In addition, FIG. 11(f) is a diagram showing the operation in a plan view.

As shown in FIGS. 11(b), (c), and (d), it can be seen that the support shaft 124 has positioning holes 124a formed every 90 degrees in the circumferential direction. Furthermore, as shown in FIG. 11(b), it can be seen that by positioning the front ends of the fixing pins 126c and 128c into any of the positioning holes 124a, the arms 126b and 128b can be positioned. The fixing pins 126c and 128c are not limited to configurations that can be screwed forward and backward with respect to the arms 126b and 128b, and may be configured to be fixed to the arms 126b and 128b by energizing the support shaft 124 side. Since it is constructed in this way, as shown in FIG. 11(f), the arms 126b and 128b can be arranged in four directions.

The support shaft 124 of the angle steel installation tool 120 as described above is formed of a cylindrical material penetrating in the vertical direction as shown in FIG. 11(a). The support shaft 124 corresponds to the configuration shown in FIG. 3 of the insertion hole 64a provided in the clamping portion 62 of the direction changing tool 60. Therefore, by inserting the insertion portion 74 of the turning portion 70 of the direction conversion tool 60 of FIG. 3 into the support shaft 124, it can be used as a direction conversion tool. Similarly, the turning portion 104 of the direction changing tool 90 in FIG. 5 can also be combined.

<insulation obstacle support tool>

FIG. 12 is a perspective view of the insulating barrier supporting tool 150 of the present invention.

The insulating obstacle supporting tool 150 has a supporting bar 152. The support bar 152 has a grip portion 152a at one end, and an insulating block engaging portion 154 is attached to the other end. The insulating barrier engaging portion 154 will be described in detail later using FIG. 13.

Between the grip portion 152a and the insulating obstacle engaging portion 154, a wire connecting portion 158 that can connect the belt 4 (wire) of the post lifting device 1 (see FIG. 1) is provided. The wire connecting portion 158 will be described later using FIG. 14. Above and below the wire connecting portion 158, a dewatering portion 160 for breaking the flow of raindrops is provided.

FIG. 13 is an enlarged view of the insulation barrier engaging portion 154 installed in the insulation barrier support tool 150 of FIG. 12. The insulating member engaging portion 154 has a hook portion 154a formed in a U shape, and a blocking portion 156 that closes the opening of the hook portion 154a. The hook-shaped portion 154a has a hanging hole formed at one of the U-shaped ends. In addition, the hook portion 154a is formed to be inclined so that the end portion on the suspension hole 154b side is slightly raised.

The blocking portion 156 is penetratingly arranged on the side where the suspension hole 154b is not formed. The blocking portion 156 has a blocking bar 156a configured to be able to emerge inside the hook-shaped portion 154a, and a ring-shaped engaging portion 156c that can be operated distally. Here, the state where the hook portion 154a is opened is indicated by a solid line, and the state where it is closed is indicated by a broken line. The hook portion 154a is slightly inclined, so that when the insulating obstacle is lifted, the center of gravity does not move much, and it is difficult to generate shaking. The circular area indicated by the two-dot chain line within the area surrounded by the hook portion 154a and the blocking portion 156 (indicated by a dotted line) schematically shows the connection position of the insulating obstacle of the work object.

FIG. 14 is an enlarged view of the wire connecting portion 158 of the insulating obstacle supporting tool 150 of FIG. 12 and its surroundings. The wire connecting portion 158 is formed in a U-shape that can accommodate the middle portion of the support bar 152 from the side. A suspension hole 158b is also formed in the wire connecting portion 158. The belt 4 of the column lifting device 1 can be connected to the wire connecting portion 158 (refer to FIG. 1) not only at the insulating obstacle engaging portion 154. If the fastening portion provided by closing the U-shaped opening is locked, the wire connecting portion 158 can be fixed at any height position. Therefore, the lifting position can be easily changed according to the work content.

Here, although the dewatering part 160 that interrupts the flow of raindrops is provided above and below the wire connecting part 158, if the dewatering part 160 is provided at least below the wire connecting part 158, not only the insulating interfering part 154, the flow of raindrops after the belt 4 of the hoisting device 1 on the column flows to the wire connecting portion 158 can also be broken.

FIG. 15 is a view showing the use state of the insulating obstacle supporting tool 150 of FIG. 12.

In FIG. 15, a state in which the insulating obstacle supporting tool 150 is connected to the post lifting device 1 is shown. The electric wires in FIG. 15 only show three middle wires powered by three-phase AC, and the remaining two outer wires connected to the metal crossarm 303 are omitted for convenience of description.

As shown here, when the center line is arranged at a higher position than the metal crossarm 303, that is, when it is arranged at a different height from the outer line, the working range in the height direction is expanded. Therefore, with respect to the working objects near the metal crossarm 303, with respect to the sufficient movable area in the up and down direction, the working objects above the metal crossarm 303 cannot be sufficiently obtained only by the post lifting device 1 The movable area on the upper side. In order to compensate for the movable area on the upper side, an insulating barrier supporting tool 150 is used.

In order to connect the belt 4 of the post lifting device 1 to other tools, the belt connecting tool 6 provided at the lower end of the belt 4 is engaged with the wire connecting portion 158 of the insulating obstacle supporting tool 150. Thereby, if the belt coupling 6 reaches the upper limit of the lifting device 1 on the column, only the height difference H part from the wire connecting portion 158 of the insulating obstacle support tool 150 to the insulating obstacle engaging portion 154 can be lifted beyond the upper limit Up.

<Tools for fixing poles>

16 is a perspective view of the tool 180 for fixing a utility pole according to the present invention.

When replacing the insulation barrier, in order to relax or disappear the tension applied to the insulation barrier, it is necessary to form a branch path in parallel with the insulation barrier (to be described later using FIG. 20), and switch the tension to the branch path side. As a construction frame for forming such a branch path between the electric wire and the electric pole, the tool 180 for fixing the electric pole is used.

The tool 180 for fixing a telephone pole has a bent portion 182 that is elastically deformable. The bent portion 182 is formed to have the same inner diameter as the outer diameter of the telephone pole. In addition, it is formed in an arc shape that exceeds the half of the circumference of the telephone pole. Because it is constructed in this way, it can be easily installed on the side of the telephone pole with elastic deformation by lightly pressing in.

A guide piece 182a is formed on both sides of the curved portion 182 so as to open outward. Therefore, when pushed in from the side of the electric pole, the electric pole is guided toward the center of the bent portion 182, so it is easy to operate and install even if it is remote. The rope-shaped body 184 is arranged along the inside of the bent portion 182. The rope-like body 184 is fixed to the bent portion 182 by four fixing straps 186. In addition, the rope-shaped body 184 is formed with ring-shaped processed portions 190 at both ends. Among them, one end is disposed close to one end of the bent portion 182, and the other end is disposed away from the bent portion 182. The ring-shaped processed portion 190 of the rope-shaped body 184 provided close to the bending portion 182 is a hanging rope portion 184a that hangs the extension portion 184b extended at the other end longer. The use state of the hanging rope portion 184a will be described using FIG. 17 below.

The guide piece 182a on which the bent portion 182 on the side of the hanging rope portion 184a is formed is provided with a grip portion 188. The holding portion 188 is formed with a concave portion 188a that can be easily held by a pliers or the like that is used as a distal-end tool for distal operation.

FIG. 17 is a view showing a state of use of the tool 180 for fixing a telephone pole in FIG. 16. For convenience of explanation, only a part of the holding tool 304 such as a telephone pole to be fixed and a pliers for remote operation is indicated by a dotted line. In FIG. 17, the state where the tool 180 for fixing the utility pole is attached to the utility pole is shown.

When the extension portion 184b at the other end of the rope-shaped body 184 is covered with the hanging rope portion 184a at one end and tension is applied, the rope-shaped body 184 is locked and fixed to the telephone pole. The grip portion 188 can be changed in angle from the direction of the axis X indicated by the single-dot chain line. Thereby, the holding angle of the bending portion 182 can be adjusted according to the working environment. The holding portion 188 whose angle is adjusted in this way can be held by a holding tool 304 or the like, and can be attached by hooking the bent portion 182 from the side of the telephone pole.

Here, if the inner diameter of the wire pole fixing tool 180 including the rope-shaped body 184 arranged along the bent portion 182 is formed to be slightly smaller than the outer diameter of the telephone pole, even if the rope-shaped body 184 is not locked, Only the elastic restoring force of the bent portion 182 can be used to stabilize. In addition, if the fixing band 186 that fixes the rope-like body 184 to the bent portion 182 uses a member having a large friction coefficient, the stability can be further improved.

<Hanging tool (expansion tool)>

FIG. 18 shows a perspective view of the hanging tool 210 of the present invention.

The hanging tool 210 includes one extension rod 212 and two suspension parts 216. The two suspension parts 216 have two engagement bodies 217 and 218, respectively. The two engaging bodies 217 and 218 are arranged separately along the virtual planes P1 and P2 that are separated in parallel. The virtual planes P1 and P2 are represented by two-dot chain lines. Furthermore, the two engaging bodies 217 and 218 are integrally formed so that the wire receiving sides formed in a concave shape face each other. In this way, the hanging tool 210 is configured to accommodate the electric wire from above between the two engaging bodies 217 and 218 that are divided in parallel. The suspension portion 216 is rotatably supported by the base portion 214 fixed to the extension rod 212 with the center between the two engaging bodies 217 and 218 as a center.

Here, the operation of the suspension portion 216 will be described using FIG. 19. FIG. 19 is a perspective view showing the operation of the suspension portion 216. FIG. 19(a) shows a state where the above-mentioned virtual plane including the engaging body and the extension rod 212 are arranged in parallel, and FIG. 19(b) shows a state where the virtual planes P1, P2 and the extension rod 212 are arranged at a right angle. . The virtual planes P1 and P2 are represented by two-dot chain lines as in FIG. 18. At the lower end of the rotation axis of the suspension portion 216, a ring-shaped engaging portion 222 that can be operated remotely is provided. In this way, by rotating the engaging portion 222 using a remote operation rod or the like, the orientation of the suspension portion 216 can be changed.

Returning to FIG. 18, FIG. 18 shows the state of FIG. 19(b). In addition, in FIG. 18, for convenience of explanation, the position of the accommodated electric wire 301 is schematically indicated by a single-dot chain line. The hanging tool 210 of this embodiment accommodates the electric wire between the two engaging bodies 217 and 218 from above in the state of FIG. 19(a). Then, after storing the electric wire, the suspension portion 216 is rotated 90 degrees to become the state of FIG. 19(b), and the suspension portion 216 is engaged with the electric wire.

However, in the present embodiment, the two engaging bodies 217 and 218 constituting one suspension portion 216 are not completely the same shape as each other. One of them has a front end protruding downward, and a rotation preventing portion 218a is formed by bending outward. As a result, if the hanging tool 210 is hung on the wire as shown in FIG. 18, simply holding the engaging portion 222 and rotating only the suspension portion 216, the rotation preventing portion 218a will be hooked on the wire, so Unable to return to the state of Fig. 19(a). In this way, the locking action of the rotation preventing portion 218a can prevent the hanging tool 210 from falling from the wire due to an incorrect operation. Furthermore, the protrusion for preventing the rotation of the rotation preventing portion 218a may be provided on both sides of the engaging bodies 217, 218.

The extension rod 212 may select a member of a length corresponding to the branch path including the cable tensioning device 270. At one end of the extension rod 212, a connecting portion 220 in which a cable tensioning device 270 including a thread catcher 270a is connected in series is provided. In addition, the other end of the extension rod 212 is provided with a connecting portion 221 that is connected to the rope-like body 184 (see FIG. 16) of the tool 180 for fixing the telephone pole. The configuration of the present embodiment includes a hook-shaped connecting portion 221 (see FIG. 19) that can hook the loop-shaped processing portion 190 of the rope-shaped body 184 described above.

FIG. 20 is a diagram showing a state of use of the tool 180 for fixing a telephone pole and the hanging tool 210.

Here, the use state in which the cable tensioning device 270, the hanging tool 210, and the tool 180 for fixing to the electric pole are also arranged in series and formed in parallel near the insulating obstacle is shown. The branch road schematically represents its path with a single-dot chain line. As in the case of FIG. 15, the configuration of the unexplained surroundings other than the three out-of-line lines supplied by the three-phase AC is omitted.

FIG. 20 shows a state in which a hanging tool 210 is placed on the electric wire suspension near the insulation barrier, and the tool 180 for fixing the electric pole is temporarily fixed to the electric pole. As described above, the cable tensioning device 270 is connected to the connecting portion 220 at one end of the extension rod 212 of the suspended hanging tool 210, and the tool 180 for fixing the electric pole is connected to the connecting portion 221 at the other end.

<jumper holding tool>

Next, the jumper holding tool 240 used for holding the jumper 301a (see FIG. 20) during the replacement operation of the insulation barrier will be described. 21 is a six-sided view and a perspective view of the jumper wire holding tool 240. FIG. 21(a) shows a front view, FIG. 21(b) shows a rear view, FIG. 21(c) shows a top view, FIG. 21(d) shows a bottom view, FIG. 21(e) shows a right side view, and FIG. 21(f) shows Left side view, and FIG. 21(g) shows a perspective view. The jumper holding tool 240 is provided with a mounting metal 244 on one end side of the insulating rod 242 and a wire locking tool 246 on the other end side.

The mounting metal 244 is configured to hold the horizontal portion of the metal cross 303 of the angle steel. If the metal crossarm 303 is a square tube, the mounting metal 244 can be replaced with a clamp that can hold the square tube. Here, the structure of the mounting metal 244 will be described using a cross-sectional view. 22(a) is a top view of the jumper wire holding tool 240, and FIG. 22(b) is a longitudinal cross-sectional view taken along line F-F of FIG. 22(a). In FIG. 22(b), the cross section of the metal beam 303 of the installed corner steel material is shown by a dotted line. The mounting metal 244 is installed by bolting in the form of a horizontal portion of the angle steel.

Returning to FIG. 21, the wire locking tool 246 has a shape similar to the suspension portion 216 of the hanging tool 210. That is, the two engaging bodies 246a that integrally constitute the bend are arranged to face each other's wire accommodating sides so as to be along two virtual planes that are divided in parallel. Although the structure of the wire locking tool 246 of the jumper holding tool 240 is similar to the suspension portion 216 of the hanging tool 210, it is different from the fixed portion where the virtual plane is parallel to the insulating rod 242 and is not rotatable. In addition, in any of the engaging bodies 246a constituting the wire locking tool 246, the rotation preventing portion 218a like the hanging tool 210 is not formed. By fixing the jumper wire holding tool 240 having such a configuration to the metal crossarm 303, the jumper wire during the replacement operation of the insulation barrier is hooked to the wire locking tool 246, and the work can be performed safely. In addition, the wire locking tool 246 does not use a clamping mechanism, but only needs to insert a jumper between the two engaging bodies 246a and rotate the direction of the inserted jumper by 90 degrees to become the locked state. Therefore, it is possible to improve work efficiency.

<Work Method>

Starting from this, in the process of replacing the insulation barrier, the method of separating the insulation barrier until the damaged insulation barrier is removed will be explained for each step by listing the items.

(1) Steps to switch the tension towards the branch road side including the cable tensioner

This step is to form a branch path including a cable tensioning device between the electric wire and the pole in parallel with the insulation obstacle as the operation object, and is generated by the cable tensioning device contracting the side of the formed branch path Tension, the step of relaxing or disappearing the tension of the path on the side of the insulating barrier. Specifically, this step includes the following steps (a) to (e).

(a) Step of holding the wire at one end of the cable tensioner

In this step, as shown in FIG. 20, the insulation barrier 300 that has been replaced with the necessary work object is crossed, and it is installed on the path connecting the pole 302 and the wire 301 (the path indicated by the single-point chain line) Cable tensioning device 270. The cable tensioning device 270 includes the thread catcher 270a and the tensioner 270b as described above. One end of the cable tensioning device 270 uses the thread catcher 270a to hold the electric wire 301 thereby to be fixed.

(b) Steps for hanging and setting the hanging tool on the other end of the cable tensioning device

In this step, as shown in FIG. 20, a hanging tool 210 is provided between the thread catching position of the thread catcher 270a and the insulating barrier 300. The hanging tool 210 is suspended and installed on the above-mentioned two suspension parts 216 so as to receive the electric wire 301 from above.

(c) Steps for connecting the other end of the cable tensioner to the hanging tool

In this step, the connection portion 220 and the cable tensioning device 270 at one end of the extension rod 212 of the hanging tool 210 of the hanging tool 210 of the electric wire 301 are hung by the step (b) described above with respect to the The paths of the insulating insulator 300 are connected in series so as to form branch paths in parallel. In this state, nothing is connected to the connecting portion 221 at the other end of the hanging tool 210, so that it cannot be tensioned yet. However, since both ends of the tensioner 270b are suspended by the thread catcher 270a and the hanging tool 210, the operator is stable even without using a remote operation rod or the like.

(d) Steps for fixing the hanging tool to the tool fixed to the pole

In this step, the rope-shaped body 184 of the tool 180 for fixing the electric pole fixed to the electric pole 302 is connected to the connecting portion 221 of the extension rod 212 of the hanging tool 210. As a result, the branch paths are connected in parallel to the path where the insulating barrier 300 is arranged. In this case, as in the case where the cable tensioning device 270 is connected, the tool 180 for fixing the electric pole can also be connected to the stable hanging tool 210, so the work can be performed safely and easily.

(e) Step of shrinking the gap between one end and the other end of the cable tensioning device

In this step, in the state up to (d) above, a branch path is formed between the electric wire 301 and the electric pole 302, and the tensioner 270b of the cable tensioner 270 is retracted. As a result, the tension on the insulation barrier 300 side is gradually lost, and the tension is switched toward the branch path side.

Next, the steps of (a) to (e) above are included, and the steps of performing the operation on the insulating barrier 300 side will be described using FIGS. 15 and 20.

(2) The step of supporting the insulation barrier from below with the insulation barrier support tool

In this step, following the step (e) of (1) above, the insulating element engaging portion 154 of the insulating element supporting tool 150 is engaged with the connecting portion of the insulating element 300 (refer to FIGS. 13 and 15) . Thereby, the insulating barrier 300 that has lost tension is supported in a stable state.

(3) The step of connecting the wire used for lifting of the lifting device on the column to the supporting tool of the insulating obstacle

In this step, as shown in FIG. 15, the belt 4 of the post lifting device 1 is connected to the wire connecting portion 158 of the insulating obstacle support tool 150. In addition, although FIG. 15 shows the state in which the insulating barrier 300 is engaged with the insulating barrier engaging portion 154, the insulating barrier supporting tool 150 may be used before connecting the belt 4 to the wire connecting portion 158 The insulating barrier 300 is supported, and it can also be performed simultaneously.

The connection position of the belt 4 to the insulating obstacle supporting tool 150 can be appropriately selected according to the height difference between the insulating obstacle 300 and the lifting device 1 on the column. Therefore, when the height of the insulating barrier 300 is close to the height of the member to which the lifting device 1 on the column is fixed (in this case, the metal crossarm 303), the suspension hole 154b of the insulating barrier engaging portion 154 can be selected. In the case of the arrangement as shown in FIG. 15, since the insulating obstacle 300 located higher than the metal crossarm 303 where the lifting device 1 on the column is arranged is the work object, the belt 4 is connected to the set The wire connecting portion 158 in the middle of the support bar 152. By appropriately selecting the connection position in this way, a wide range exceeding the lifting limit height of the lifting device 1 on the column can be set as the operation target.

(4) The step of releasing the connection of the insulation obstacles hung by the lifting device on the column while being supported by the support tool of the insulation obstacles

In this step, while supporting the stable insulation support tool 150 connected to the belt 4 of the column hoisting device 1, a disconnecting tool (not shown) is used to release the connection of the insulation barrier 300.

For example, in the case of a ball-and-socket type connection structure, the connection can be released by pushing up the lock spring from below. In this operation, if the insulating barrier supporting tool 150 is used to support it, the insulating barrier that loses tension will be stabilized, so the working efficiency will be improved.

In addition, if the blocking portion 156 of the insulating barrier engaging portion 154 is first closed, the insulating barrier 300 can be prevented from floating upwards, so the operation is more stable. Unlike the construction method of this embodiment, in the case where the insulation obstacle 300 is directly lifted by the post lifting device 1, when the insulation obstacle 300 is disconnected, it is necessary to press with a holding tool 304 or the like in order to stabilize it However, according to this method, the tool 150 can be supported by an insulating barrier instead of the holding tool 304.

Furthermore, if the insulation barrier 300 is disconnected, the path between the electric wire 301 and the electric pole 302 is broken, so that the free end of the electric wire 301 becomes unstable. However, in the construction method of the present embodiment, at the stage of step (b) of the above step (1), the free end of the electric wire 301 is accommodated in the suspension portion 216 of the hanging tool 210, so that unintentional hanging can be prevented.

That is, in the state before the tension tool 210 switches the tension from the insulation barrier 300 side to the branch path side, since the tension of the insulation barrier 300 side is hung stably, the connection cable tensioning device 270 and the pair The work of the utility pole fixing tool 180 becomes easy. Conversely, after the tension is switched from the insulation barrier 300 side to the branch path side, the wire 301 whose tension has disappeared can be hung on the hanging tool 210 side stably. Therefore, after the separation, when assembling the new insulator 300, the free end of the electric wire 301 can be arranged in the vicinity of the working position in advance, so in addition to the improvement of the working efficiency, the electric wire 301 can be prevented from falling.

(5) The step of separating the insulating obstacles while supporting the disconnected insulating obstacles with the support tool of the insulating obstacles, and lifting with the power of the lifting device on the column

In this step, the insulating obstacle 300 is lifted and separated by the lifting device 1 on the column via the insulating obstacle supporting tool 150 supported by the operator. Since the load is borne by the hoisting device 1 on the column, the burden on the operator will be reduced.

Through the above steps (1) to (5), the insulating barrier 300 that caused the problem can be safely and easily separated. When incorporating a new insulating barrier 300, the above steps need only be reversed.

The configuration as described above is an example of the present invention, and includes the following modifications.

In the above-mentioned embodiment, the horizontal side holding portion 34 of the holding portion 32 of the direction changing tool 30 of FIG. 2 is fitted with a butterfly screw 37 to fit the locking claw 36 to the horizontal guide hole 34b. The configuration of the connecting plate 34a is shown as an example. However, if the horizontal width of the metal crosspiece 303 such as an angle steel material can be set in advance, it may be configured to move the screw along the clamping direction as in the vertical-side clamping portion 40.

In the above-mentioned embodiment, the vertical side holding portion 40 of the holding portion 32 of the direction changing tool 30 shown in FIG. 2 is exemplified by a structure using a screw clamp. However, if it is a structure that can clamp a metal cross such as angle steel in a vertical direction by remote operation, it can also be a jig of a different form.

In the above-described embodiment, the insertion hole 94a formed in the upper abutment portion 94 of the direction changing tool 90 in FIG. 5 shows an example composed of a cylindrical member. However, if the insertion portion 108 of the inserted turning portion 104 is held to be able to rotate stably in the vertical direction, it may not be a cylindrical member.

In addition, in the above-mentioned embodiment, the holding portion 92 of the metal cross arm mounting portion as the direction changing tool 90 in FIG. 5 is shown by taking the configuration using the eye bolt 100a as the interval fixing tool 100 as an example. However, if it is a structure that can withstand the pushing force of the lifting portion 102 and maintain the distance between the upper contact portion 94 and the opposed portion 98, it may not be a fixed structure that is screwed by the eye bolt 100a or the like.

Furthermore, in the above-mentioned embodiment, the wire connecting portion 158 of the support rod 152 provided in the insulating obstacle supporting tool 150 is formed with a suspension hole 154b for connecting with the belt 4 of the post lifting device 1 as Examples. However, if it is a detachable structure, it may be a connection structure other than the suspension hole 154b and the belt connection portion 6.

Moreover, in the above-mentioned embodiment, the configuration in which the closing portion 156 closing the opening of the insulating barrier engaging portion 154 is penetrated and arranged on the side where the suspension hole 154b is not formed is taken as an example. However, a through hole may be formed on the side where the suspension hole 154b is formed. In addition, if it is a structure that can be blocked at least to the extent that the connecting portion of the insulating barrier 300 that can be engaged with the insulating barrier engaging portion 154 cannot pass through, it may not be the U-shaped end of the insulating barrier engaging portion 154 The structure where the parts are completely closed to each other.

Furthermore, in the above-described embodiment, the blocking portion 156 that closes the opening of the insulating barrier engaging portion 154 is shown as an example in which the blocking bar 156a that is penetrated is opened and closed in the longitudinal direction to open and close . However, it may be configured to be opened and closed by a rotation operation centered on an axis extending in a direction orthogonal to the longitudinal direction.

In addition, in the above-described embodiment, the tool 180 for fixing a telephone pole is shown by taking an example in which the hanging rope portion 184a of the hanging rope-like body 184 is formed in a ring shape. However, if it is a structure that can be hung on the side of the extension portion 184b, it may be hook-shaped.

In addition, in the above-described embodiment, the tool 180 for fixing the utility pole is shown by taking the configuration in which the hanging rope portion 184 a for hanging the rope-like body 184 is provided on the same side as the grip portion 188. However, if one is extended from one end of the bent portion 182 and the other is positioned near the other end of the bent portion 182, the hanging rope portion 184a may also be provided on the opposite side of the grip portion 188.

Moreover, in the above-mentioned embodiment, the tool 180 for fixing to a telephone pole is shown as an example in which a rope-like body 184 is arranged along the inner wall surface of the bent portion 182, but it may also be along the bent portion 182 The outer wall surface is arranged.

In addition, in the above-described embodiment, the tool 180 for fixing to a telephone pole is shown as an example in which one rope-shaped body 184 is arranged along the bent portion 182. However, it may be configured such that the hanging rope portion 184a is connected to one end of the bent portion 182, and the rope-like extension portion 184b is connected to the other end. Even with this configuration, it can also be temporarily fixed by being attached to the telephone pole 302 with the elastic force of the bending portion 182, and can be tensioned by a cable after hanging the extension portion 184b on the hanging rope portion 184a The tension of the device 270 is automatically fixed formally.

(Industry availability)

In the isolation method of the insulation barrier of the present invention, since the insulation barrier is lifted by the support tool of the insulation barrier, the movable range toward the height direction of the lifting device on the column can be expanded. Therefore, it is especially useful for the replacement of insulation barriers when the height of three transmission lines of three-phase AC is different.

1‧‧‧Pile lifting device

4‧‧‧Belt

6‧‧‧Belt connector

150‧‧‧Insulation support tool

154‧‧‧Insulation blocking part

158‧‧‧Wire connection

300‧‧‧Insulation barrier (tension-resistant insulation barrier)

301‧‧‧Wire (overhead wire)

302‧‧‧ Telephone pole

303‧‧‧Metal crossarm

H‧‧‧High and low difference

Claims (11)

An insulation barrier separation method is to use a cable tensioning device and a column lifting device to separate the insulation barrier for tension resistance from the overhead wire; it is characterized in that it includes: The step of switching the branch path including the above-mentioned cable tensioning device formed in parallel; the step of supporting the above-mentioned insulating obstacle from below with an insulating obstacle support tool; connecting the wire for lifting of the above-mentioned column lifting device to the above The step of supporting the insulating obstacle tool; and the step of releasing the connection of the insulating obstacle that has been lifted by the lifting device on the column while being supported by the supporting tool of the insulating obstacle. The insulation barrier separation method of claim 1, wherein the step of switching the tension toward the branch path includes: a step of grasping the overhead wire with one end of the cable tensioning device; tensioning the suspension cable The step of hanging the installation tool at the other end of the device on the overhead wire; the step of connecting the other end of the cable tensioning device to the above-mentioned hanging tool; fixing the above-mentioned hanging tool to the one fixed on the pole Steps for fixing the utility pole; and steps for shrinking the gap between one end and the other end of the cable tensioning device. A lifting device on a column, which is used by the insulation barrier separation method described in claim 1 or 2; characterized in that it is provided with: an insulation barrier engaging portion, which can be engaged with the insulation barrier; An operating rod, which suspends the insulating block engaging portion from the front end, and indirectly operates the suspended insulating block engaging section; and a direction changing tool, which installs the operating rod in a reversible direction on a telephone pole Metal crossarm. The post lifting device according to claim 3, wherein the direction changing tool includes: a metal crossarm mounting portion formed with an insertion hole along the vertical direction, which can be mounted on the metal crossarm; and a turning portion, which has It is rotatably inserted into the insertion portion of the insertion hole of the metal cross arm mounting portion, and has an operation rod fixing portion that fixes the operation rod. The post lifting device according to claim 4, wherein the metal crossarm mounting portion is provided with: an upper abutment portion which abuts on the metal crossarm; a vertical installation portion which is near the upper abutment portion It is vertically arranged downward; the opposite part is extended from the vertical installation part to a position opposed to the upper abutment part; the interval fixing tool can fix the distance between the upper abutment part and the opposite part ; And a lifting portion, which is provided on the opposite portion in a configuration that can be raised and lowered toward the upper contact portion. A post lifting device according to claim 5, wherein on the side of the vertical installation portion of the lifting portion, a lower edge of the metal cross formed by an angle steel with a surface directed vertically downward is formed End holding part. An insulating obstacle supporting tool, which is in the method of separating the insulating obstacle described in claim 1 or 2, can be combined with a lifting device on the column for lifting the insulating obstacle to be used by the user; it is characterized in that it is provided with: a support Rod, which has a grip portion at one end; an insulating obstacle engaging portion, which is provided at the other end of the above-mentioned support rod, which can be engaged with the connecting portion of the insulating obstacle; and a wire connecting portion, which is provided at the above-mentioned insulation The interfering part and the holding part can be connected to the wire. The insulation barrier supporting tool according to claim 7, wherein the wire connecting portion can be changed in position between the insulation barrier engagement portion and the grip portion. A tool for fixing a telephone pole, which is used in the insulation barrier separation method described in claim 2 to fix a cable tensioning device for tensioning an overhead electric wire to a telephone pole; Equipped with: a bent portion having an inner diameter of the same degree as the outer diameter of the above-mentioned pole, and formed into an arc shape by an elastic material that exceeds a half-period length of the circumference of the above-mentioned pole; a rope-shaped body that bends from the above One end of the portion is extended; and a hanging rope portion, which is provided at the other end of the curved portion, hangs the rope-like body. The tool for fixing a utility pole according to claim 9, wherein the rope-like body and the hanging rope portion are constituted by a single member along the bending portion. A hanging tool used in the insulation barrier separation method described in claim 2 which hangs the other end of the cable tensioning device that grips the erected wire at one end from the erected wire; Equipped with: an insulating rod having a connecting structure at both ends; at least one base part fixed to the insulating rod; and a suspension part, which are made of two engaging bodies along virtual planes separated in parallel to each other The electric wire accommodating side is formed integrally so as to face each other, and is pivotally supported relative to the base portion so as to be rotatable between the two engagement bodies as a center.

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