JPH11308722A - Communication line removal method operable on ground, and tool therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the fatigue reductions and safeties of worker, by releasing the fixations of hanging hardwares for fixing a supporting line on respective poles in a working span to clamp the supporting line and weight a wire grip present in the root portion of a pole, and by cutting the supporting line present between its clamping point and the pole to relax the wire grip and take down gradually the supporting line to ground. SOLUTION: A communication line embraced by hangers H is cut at a predetermined length by a cutting tool operated from the ground, and one end portion of the cut communication line is gripped by a pulling-out tool operated from the ground to pull out the cut communication line from the hangers H of a supporting line B. Then, releasing the fixations of hanging hardwares K for fixing the supporting line B on respective poles P present in a working span, and clamps G the supporting line B before cutting the end portion of the working span, a wire grip M present in the root portion of a pole P is brought into a weigh-able state, and thereafter, the supporting line B present between its clamp G and the pole P is cut to relax the wire grip M and take down gradually the supporting line B to ground. Thereby, eliminating any high lift work, the quantitative reduction and safety of a communication- line removing work can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0002] The present application discloses a construction method relating to removal of a communication line and a tool used therefor.

[0002]

2. Description of the Related Art In order to cope with an increase in the amount of information transmitted, construction of replacing a conventional communication line with a large-capacity communication line with an optical fiber is being promoted nationwide. In order to replace wooden utility poles with concrete pillars, construction work has been carried out in various places to remove old communication lines. In the work to remove such an old line, it is possible to perform relatively safely by aerial work vehicles if the conditions such as the road environment are in place. Not something you can do. In addition, it is impossible to place high-altitude work vehicles on all utility poles in the construction span in view of the current spread, and stopping many high-altitude work vehicles continuously requires construction work in narrow streets. In this case, it may hinder general social life and is not a realistic method. Old wooden power poles are being replaced by concrete poles and steel pipe poles in sequence.However, it is dangerous to ascend to poles whose roots are often rotten, and above all, working at heights is dangerous. Met. In this application, a construction method and a tool for performing the work for removing the old line from the ground in such a background are disclosed.

[0003]

Means for Solving the Problems and Summary of the Invention A general communication line A is attached to a suspension pole near a top of a pole P by a pole pole band. The support line B is provided with a hanger H continuously at a predetermined interval, and the communication line A is held in the hanger H. In order to remove the communication line A in this state from the ground without ascending the pole without using an aerial work vehicle, tools necessary for each step of the removal work are moved to the line position by the telescopic operation rod S. It is necessary to raise it and operate it from the ground. First, the communication line A held by the hanger H is cut by a predetermined length, the upper part of the hanger H is pulled out and removed, and the suspension metal member K fixing the support line B at each utility pole between the work diameters is fixed. Is released, and before the end of the span is cut, the clamp G is set to a state in which a load can be applied to the wire drawer M at the base of the utility pole.
The support wire B is gradually lowered to the ground by loosening the cable stretcher M.

[0004] The outline of the above steps is as follows. The tools to be attached to the tip of the operation rod S for performing this step from the ground are as follows, and the outline thereof is shown here. First, a cutting tool C for cutting the communication line A is fixed to a crescent-shaped fixed blade C1 having a base end fixed to the distal end of the operating rod and a curved portion of a crescent-shaped rotary blade C2 facing the same. A drive in which the tip of the blade C1 and one end of the rotary blade C2 are overlapped and rotatably fixed on the shaft, and the teeth C4 engraved on the back of the rotary blade C2 are linked to the output shaft of a motor C7 provided at the base of the fixed blade. The rotating blade C2 is interlocked with the gear C8 by the rotation of the motor C7 so that the curved space of the opposed blades is narrowed and intersected, and the communication line A in the space is cut. The wire from the motor connects to the battery placed on the ground.
The cutter portion including the fixed blade C1, the rotary blade C2, the motor C7, etc. is detachably attached to the tip of the operating rod S, and the On / Off and forward / reverse rotation switch of the motor C7 are disposed at the base end of the operating rod for remote operation. Is what you do.

[0005] A pulling tool D is a belt D5 having one end fixed thereto.
Inverted into a letter shape and inserted into a pull-through buckle D4 structure,
The U-shaped space D6 can be arbitrarily reduced in diameter. The pulling tool D is also detachably attached to the tip of the telescopic operation rod S, and a rope D7 is provided at the other end of the belt D5 so as to have the same length as when the operation rod is extended, thereby enabling operation from the ground.

A bolt loosening tool E is a tool for loosening a support wire gripping portion of a suspension hardware K for fixing a support wire B to a utility pole P, and a socket E1 having a predetermined diameter is fixed to a tip of a motor shaft.
The screwing of the nut K2 is released by the rotation of 2. Further, in order to release the initial resistance at the time of releasing the screwing, a release arm E4 having a shaft E3 and a ratchet structure is provided, and pulled down on the ground by a rope E5 suspended at the tip of the release arm E4. This socket E1 is used to operate nut N2
A fixed arm E6 is protruded to fit
To perform positioning.

The anchor F generally comprises a clamp G, a pulley I, a top hat J, an anchor L, and a stretcher M. The clamp G is attached to the tip of the operating rod S to hold the support line B by an operation from the ground, and thereafter the operating rod S is removed and used only with the clamp G main body. The general structure is that a fixed claw G4 is provided between upper and lower G2 and G3 sides of a frame G1 having a substantially U-shaped vertical section.
And a clamping claw G5 is provided, and the operating rod S interlocked with a shaft G11 screwed to the lower side G3 is slidable by rotating the operating rod S around the clamping claw G5, and a pulling force is applied to the end of the clamping claw G5. Thus, the clamped object is twisted in an eccentric state to maintain the holding of the support wire B. This fixed claw G4
And the space formed by the holding claws G5 is the shaft G11,
In other words, it is not orthogonal to the operating rod S, but is inclined to one side. The tensile force applied to the end of the gripping claw G5 causes a sticking phenomenon due to the wedge principle, prevents loosening, and securely grips. To carry.

The pulley I has a hook I2 which can be locked from the ground with an operating rod S. The top hat J is made of wire and covers the top of a utility pole. The hook I2 of the pulley I is connected to the top hat J.
To hold down the tension of the gripped support wire B.

The anchor L is attached to the clamp claw end of the clamp G to hold the end of the rope R extending through the pulley I near the ground, and is fixed to the drum L1 around which the rope R is wound. It is made of a rope fixing material L2 for stopping the rear end of the rope.

The tensioner M has a lower end connected to a chain-type electric pole fastener N and the other end connected to the anchor L, and a tension force is applied to the anchor L by a ratchet mechanism to reduce the tension of the rope R. maintain.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In one embodiment of the present invention, the communication line A at both ends between predetermined power poles of a span whose communication line A is to be removed is cut off. Cutting is performed from the ground using a cutting tool C having a cutter attached to the tip of a telescopic operation rod S. The structure of the cutting tool C is shown in FIGS. 6 to 8, in which a fitting portion O for engaging with an operating rod is provided at a lower part of a base end, and a crescent-shaped fixed blade C1 is provided at an upper part of the base end. Similarly, a crescent-shaped rotary blade C2 is provided so that the curved portions C3 face each other, and the tip of the fixed blade C1 and one end of the rotary blade C2 are overlapped and axially rotatably fixed. Rotary blade C
2, a guide plate C5 provided with a stopper C6 on the side surface of the rotary blade and provided with a stopper C6 for setting the rotation limit of the rotary blade C2, and a rotary blade. When the maximum opening is set, it is set to project to the middle position between both blades. The guide plate abuts against the cut object from below and pushes up to rotate the rotatably connected rotary blade, thereby facilitating the meshing of the teeth on the rear surface with the drive gear.
The guide plate contacted under the communication line is pushed up by the operating rod, and the rotary blade is rotated, so that the drive gear C8 interlocked with the output shaft of the motor C7 provided on the fixed blade base engages the rotary tooth C4. , The rotation of the motor C7 causes the rotary blade C2 to interlock, and the curved space of the opposing blades narrows and intersects,
The communication line A in the space is disconnected. Guide plate C
5, the rotary blade C2 is rotated by pressing against the communication line A and the support line B in the final stage as shown in FIG. 6, thereby guiding the communication line A and the support line B into the curved space, and connecting the drive gear with the drive gear. Is a member for causing the members to engage with each other. The electric wire from the motor C7 is connected to the battery placed on the ground, and the On / Off and forward / reverse switch of the motor C7 are
It is arranged at the base end of the operating rod and remotely operated (not shown). At this time, if one part of the telephone pole is cut first, the tightness is loosened, and the communication line of the telephone pole corresponding to the span can be lowered (Fig. 1). It is easy to cut it and cut it, and the same applies to the next span.

When the disconnection of the communication line A is completed at each utility pole P for the planned construction span, one end of the communication line A held by the hanger H on the support line B is grasped from the ground with the extraction tool D and pulled out ( (Fig. 2). This step is repeated for each span, and the drawing step is completed. In gripping the communication line A terminal with the pulling tool D, the terminal (rope D7) of the large ring-shaped belt D5 is pulled and squeezed with the hand of the operating rod S to narrow the ring-shaped gripping space and to make it close to the communication line A. After that, the operating rod S is removed, and the rope D7 is moved forward for pulling out, so that the gripping state occurs in which gouging occurs, and the pulling out of the hanger H series can be performed without slipping. Usually, it is performed for each span. The structure of the puller D is shown in FIGS. 9 to 11, and the plate is bent in a U-shape to form a frame D1.
And a toothed curved portion D2 is provided at the open end of the U-shape, and a fitting / detachment portion D3 with the socket OS provided at the tip of the operating rod S is provided at the lower bottom side. A buckle D4 is provided, and a belt D5, one end of which is fixed to a lower portion, is inverted into a U-shape and inserted into the pull-on buckle D4 so that the U-shaped space D6 can be arbitrarily reduced in diameter. A long rope D7 is provided at the end via a shackle.

When the removal of the communication line A for all the diameters is completed (FIG. 3), the support line B is removed. The support wire B is removed by using a suspension bolt K1 that fixes the support wire B with a span utility pole P.
To release the support line B from the ground, and then hold the support line B at the end of the construction span from the ground, cut between the anchor point and the utility pole, and gradually lower the predetermined span to the ground while loosening the anchor. Do with. The predetermined span is a span composed of a so-called pull-through pole in which the support wire B is simply fixed in position to the utility pole without applying tension. When you are in the middle,
The work will be divided once at that position. First, the suspension bolt K1 of each utility pole P is loosened from the ground as shown in FIG. 12 by a bolt loosening tool E provided with a telescopic operation rod S. The suspension bolt K1 is a substantially L-shaped bolt inserted from the back surface into a hole at the tip of the suspension hardware K bolted to the utility pole P, and the threaded L-shaped tip is inserted into the groove at the tip of the hardware. The support wire B is clamped between the two, and the nut K2 is screwed in to fix the clamped state. Strictly speaking, "loosening the suspension bolt" described in the present application means loosening the nut K2.

The bolt loosening device E is shown in FIG.
A tool for loosening the support wire gripping part of the hanging hardware K for fixing the support wire B to the telephone pole, fixing a predetermined socket E1 at the end of the motor shaft, and releasing the nut K2 by rotating the motor E2. . Further, a release arm E4 having a ratchet structure and a shaft E3 for releasing the initial resistance at the time of releasing the screwing is provided, and the release arm E4 is pulled down on the ground by a rope E5 suspended at the tip of the release arm E4. In order to fit the socket E1 to the nut K2 by operation from the ground, a fixed arm E6 is protruded and positioned on the support line B for positioning. The electric wire from the motor E2 is connected to the battery placed on the ground, and the On,
The Off switch is arranged at the base end of the operating rod and remotely operated (not shown).

When the loosening of the suspension bolt K1 is completed at each utility pole P, the support wire B at the span end is retained on the utility pole P by the anchoring tool F (FIGS. 4, 16 and 17). The anchor F is composed of a clamp G, a pulley I, a top hat J, an anchor L, and a stretcher M. The structure of the clamp G is, as shown in FIGS. 13 to 15, the upper and lower sides G2,
A fixed claw G4 and a holding claw G5 are arranged between G3, and a holding claw G5 is provided.
And an inclined surface between the lower side G3 of the frame G1 and bulging portions G6 and G7 at both ends of the holding claws G5.
Is provided with a position fixing arm G8, a rope mounting ring G9 is provided on the other bulging portion G7, and a shaft G11 is provided with a lower portion G3 below the clamping claw G5 and a fitting portion G10 with the operating rod S at the lower end. By rotating the shaft G11 with the operation rod S, the holding claws G5 are slid up and down. Further, the rope R is mounted on the rope mounting ring G9 at the end of the gripping claw G5, and by applying a pulling force, the gripping claw G5 moves in the lateral direction by the principle of wedges, thereby causing a tightening phenomenon, preventing loosening, and securely preventing loosening. It is something to hold. The position fixing arm G8 facilitates the operation of holding the support line from the ground. The position fixing arm G8 is hung on the support line B, and the support line B is inserted between the fixing claw G4 of the clamp and the holding claw G5 using this as a guide. is there.

The pulley I has a hook I2 (Japanese Patent Publication No. 5-8027) which can be locked from the ground with the operation rod S, and the top hat J is made of wire and has a sufficient retaining strength. , Put this on the pole top and hook I
2 is the support line B
To keep the tension. The anchor L is attached to the clamp claw end of the clamp G to hold the end of the rope R extending through the pulley I near the ground, and to fix the end of the rope R around the ground. It is made of a rope fixing material L2 for fixing the rope end. The tensioner M has a lower end connected to the chain-type electric pole fastening N and the other end connected to the retainer L, and a tension force is applied to the retainer L by a ratchet mechanism to maintain the tension of the rope R. Is what you do. Operation stick S from the ground
Is lifted, the position fixing arm G8 is hung on the support line B as a guide, and the support line B is fitted into the gripping space G0. After the operation rod S is rotated to secure the gripping state, tension is applied by the wire stretching device M, and the tension between the clamp G and the utility pole P is removed (FIG. 4). Next, communication line A
The supporting line B at this position is cut by a cutting tool C similar to that used for the cutting. In this step, before the operation of the clamp G by the operating rod S, as shown in FIG. 20, a top hat J is put on the top of the utility pole, and the pulley I that has passed through the rope R connected to the clamp G is connected to the pole. It goes without saying that the wire stretcher M connected to the anchor L with its end wound is set on the pole base. If the cutting is completed
And gradually lower the support line B to the ground (FIG. 5). In the pull-in column, the suspension bolt K1 is released and is temporarily supported by the suspension hardware K, and the temporary support is sequentially released by the operation rod S and lowered to the ground. With the above steps, removal of the support line B and the communication line A is completed.

Although the removal method and the tools used for the removal method have been described above, the operation rod S required to complete the removal method by operation from the ground will be briefly described. The operating rod S is shown in FIG.
The FRP is a five-stage telescopic type having a shape as shown in FIGS. 9 and 20, and is used by fitting a fitting portion O of various tools, a fitting portion O with a socket OS, and a tip fitting Q to a tip portion. . The upper three-stage lock is a pin lock joint, the fourth-stage lock is a screw lock joint, the height of which can be freely adjusted according to the work, and a structure suitable for tightening rotation of the clamp G. It is.

[0018]

By adopting the present invention, the use of aerial work vehicles is reduced, the economic burden is reduced, the influence on social life such as traffic obstruction is reduced, and a series of operations are performed from the ground. Work can be performed at high altitudes, eliminating work at heights, reducing operator fatigue and performing safe work. Also, in the case of a rotten wooden pillar at the root of the intermediate pillar, it is possible to save labor such as reinforcing the base with a metal pile before ascending the pillar. In addition, various tools are used by connecting a telescopic rod and a tool for a specific purpose, and provide excellent effects such as being lightweight and convenient to carry.

[Brief description of the drawings]

FIG. 1 is a flowchart of a ground access removal method according to the present invention (1, lowering due to disconnection of communication line A).

FIG. 2 is a procedural diagram of the ground access removal method of the present application (2, communication line A is disconnected).

FIG. 3 is a procedure diagram of the ground access removal method of the present application (3, a state in which a communication line is pulled out).

FIG. 4 is a procedure diagram of the ground access removal method of the present application (4, installation of the retaining tool F).

FIG. 5 is a procedure diagram of the ground access removal method of the present application (5, a state in which the support line B is cut and lowered to the ground).

FIG. 6 is a front view of the cutting tool of the present application.

FIG. 7 is a front view of a communication line disconnected state with the cutting tool of the present application.

FIG. 8 is a perspective view of the cutting tool of the present application.

FIG. 9 is a front view of the extraction tool of the present application, with a part thereof cut away.

FIG. 10 is a perspective view showing a state in which the extraction tool of the present invention is to be fitted to a communication line.

FIG. 11 is a perspective view showing the state where the pull-out tool of the present application is fitted to the communication line and the operation rod is removed.

FIG. 12 is a perspective view of a use state of the bolt loosening tool of the present application.

FIG. 13 is a front view of the clamp of the present application.

FIG. 14 is a perspective view of a state in which a support wire is grasped by the clamp of the present application.

FIG. 15 is a front view showing a state where an operation rod is removed from the clamp of the present application.

FIG. 16 is an enlarged front view of the support line tension of the present application in a relaxed state (FIG. 4).

FIG. 17 is an enlarged front view of the lower part of FIG. 16;

FIG. 18 is a front view showing a mounted state of a pulley and a clamp according to the present application.

FIG. 19 is a perspective view of an operation rod used in the present application.

FIG. 20 is a perspective view of the operation stick and various attachments of the present application.

[Explanation of symbols]

 A Communication line B Supporting line C Cutting tool D Pulling tool E Bolt loosening tool F Pulling tool G Clamp H Hanger I Pulley J Top hat K Suspension hardware L Pulling device M Cable stretcher N Power pole fastening fitting O Fitting section P Power pole Q Tip fitting R Rope S Operating rod C1 Fixed blade C2 Rotating blade C3 Bending part C4 Teeth C5 Guide plate C6 Stopper C7 Motor C8 Drive gear D1 Frame D2 Toothed bending part D3 Fitting part D4 Buckle D5 Belt D6 U-shaped space D7 Rope E1 socket E2 motor E3 axis E4 release arm E5 rope E6 fixed arm G0 gripping space G2 upper side G3 lower side G4 fixing claw G5 holding claw G6, G7 bulging part G8 position fixing arm G9 rope mounting ring G10 fitting / disconnecting part G11 hook G11 hook K1 Suspension bolt K2 Nut L1 Drum L2 Rope fixing material

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yuichi Ishibe 2-15-18 Chiyoda, Naka-ku, Nagoya City, Aichi Prefecture Inside Japan Telephone Facilities Co., Ltd. (72) Inventor Yutaka Ichikawa 2--15 Chiyoda, Naka-ku, Nagoya City, Aichi Prefecture No. 18 Nippon Telephone Facilities Co., Ltd. (72) Inventor Kuniaki Kiuchi Osamu 3039 Sasaga, Matsumoto-shi, Nagano Izumi Seiki Seisakusho Co., Ltd. (72) Inventor Shigeru Hirabayashi 3039 Sasaki, Oaza, Matsumoto-shi, Nagano Pref. (72) Inventor Terushi Narihiro 1-17 Komecho, Showa-ku, Nagoya-shi, Aichi Prefecture Sankyo Co., Ltd. (72) Inventor Tadashi Fujii 2Fuji Electric Works, Ltd. In-house (72) Inventor Hitoshi Inoue Two Fuji Idenko Co., Ltd. at 1573 Uesakino, Takino-cho, Kato-gun, Hyogo Prefecture

Claims (4)

[Claims] 1. A step of cutting a communication line A with a cutting tool C operated from the ground at both ends between predetermined telephone poles of the span for removing the communication line, and connecting one end of the cut communication line A from the ground. At the stage of gripping with the pulling tool D to be operated and pulling out the support wire B from the hanger H, and at each utility pole P between the planned removal diameters after the removal of the communication wire A, the suspension bolt K1 fixing the support wire B to the utility pole P The supporting wire B is released by a bolt loosening tool E operated from the ground, and the end of the supporting wire is fixed to a utility pole P by an anchoring tool F operated from the ground at one end for a predetermined distance, so that the clamp G and the utility pole are connected. Cutting with a cutting tool C;
The support wire B is lowered to the ground by loosening the rope R connecting the clamp G to the wire stretcher M fixed to the base of the power pole P via the pulley I arranged on the power pole P, and the other end is cut off from the ground. A method for removing ground access to communication lines, comprising the step of removing. 2. A crescent-shaped fixed blade C1 provided above the fitting portion O with the operating rod S and having a curved side as a blade, and a crescent-shaped blade also having a curved side as a blade and protruding forward of the curved portion. The distal end of the fixed blade C1 and the rotating blade C2 are opposed to both curved portions C3 of the rotating blade C2 having a guide plate C5 and having teeth C4 engraved on the outer peripheral back surface.
Is rotatably fixed to one end of the shaft, and the guide plate C5 is pressed from above so that the drive gear C8 interlocking with the output shaft of the motor C7 provided at the base of the fixed blade C1 and the rear teeth C4 of the rotary blade C2 are rotated. A cutting tool for use in a method of removing ground access to a communication line, characterized in that the curved space of the opposed blades is narrowed by the rotation of the motor C7, and the closed space is closed. 3. A frame D1 bent in a U-shape is provided with a toothed curved portion D2 on both sides of an upper open end, and a lower portion of the lower portion is provided with a fitting / detachment portion D3 for fitting a socket OS at the tip of the operating rod S. A belt buckle D4 is bridged near the upper part between D1 and a belt D5 having one end fixed to the lower part is inverted into a U-shape and inserted through the buckle D4 to form a U-shaped space D6.
The removal tool used for the ground access removal method of communication lines, characterized in that the diameter can be reduced arbitrarily. 4. A shaft G11 having an intermediate portion screwed with a lower side G3 and a lower end having a fitting portion G10 with an operating rod S between upper and lower sides G2 and G3 of a frame G1 having a substantially U-shaped cross section and one opening.
A pulley I having a clamp G provided with a holding space G0 inclined in one direction by a holding claw G5 supported at the tip and a fixed claw G4 fixed to the upper side G2, and a hook I2 which can be locked by the operation rod S. And a top hat J made of wire and provided with an engaging ring for locking the hook I2, and an end of a rope R connected to the lower end of the clamp G in the clamping claw tilt direction and extending through the pulley I. A communication device comprising a drum L1 for turning and fixing, a stay L made of a fixing material L2 for fastening an end of a rope R after winding, and a wire stretcher M arranged between the stay and the lower part of the telephone pole. An anchor used for the ground access removal method of the line.