JP5687079B2 - Suspension bracket with gold wheel and cable erection method - Google Patents

Description

  The present invention relates to a suspended bracket with a gold wheel and a cable erection method suitable for use in cable erection work and the like.

Conventionally, the cable erection method for laying cables such as communication cables between utility poles (supports) uses a gold wheel so that the rope and messenger wire can be smoothly extended without damaging the rope and messenger wire. The operation procedure is as follows (see FIG. 6B).
In addition, the work time in each work procedure at the time of constructing a 500 m communication cable between ten utility poles is shown in parentheses.
(Procedure 1) Attaching work of mounting hardware (100 minutes = 10 minutes / piece × 10 pieces)
Work to mount armor and metal fittings such as armatures and L-shaped hardware to each power pole (Procedure 2) Mount work of gold wheel (10 minutes = 1 minute / piece x 10)
Attaching the gold wheel to the arm attached to each utility pole (Procedure 3) Rope drawing work (15 minutes)
The work of drawing the rope while passing the rope through each gold wheel (Procedure 4) The work of drawing the messenger wire (15 minutes)
After attaching the messenger wire to the end of the rope, pulling the tip of the rope to wire the messenger wire (Procedure 5) Fixing the messenger wire (100 minutes = 10 minutes / piece × 10 pieces)
After removing the messenger wire from each gold wheel, temporarily fixing the messenger wire with a simmer (tool), and then fixing it to each L-shaped hardware (Procedure 6) Mounting work such as a coiled hanger (45 minutes = 5 Min / span x 9 span)
Attaching the coiled hanger to the messenger wire by extending the coiled hanger along the messenger wire (Procedure 7) Communication cable extension / processing (120 minutes = extension 60 minutes × 2)
After extending the communication cable through the coiled hanger, the work to perform extra length processing, etc. (Procedure 8) Removal work of the gold wheel (50 minutes = 5 minutes / piece x 10)
Work to remove each gold wheel from the arm

In addition, in Patent Document 1 below, in order to safely perform work safety and the like, the mooring portion where the interfering support wire or the existing cable is moored to the utility pole is centered and straddles both sides of the utility pole. And a support member having an engaging portion that is attached to a support line or an existing cable, and a metal wheel device that is detachably connected to the support member. A traction line is connected to the vicinity of the first fitting body, a traction line is connected to the support body side, and a second fitting body that is detachably fitted and locked to the first fitting body is provided with the combination. An apparatus for supporting a gold wheel apparatus is disclosed.
In Patent Document 2 below, an upper central horizontal plate and an upper central horizontal plate mounted on an armor having a square cross section that is attached to the upper part of the utility pole so as to extend substantially horizontally in order to reduce the risk of work at height. Side vertical plates bent in parallel at a substantially right angle from the left and right sides of the plate, and lower horizontal pieces bent substantially horizontally with the lower ends of the left and right side vertical plates facing outward This is a gold wheel that is used to temporarily suspend the left and right lower horizontal pieces through an aerial cable in the middle of erection, provided with a tightening screw part with screw rods that move in the vertical direction on the upper central horizontal plate. There is disclosed a metal wheel mounting tool for a brace that is formed with a hook hole in which the hooks on the left and right upper portions are inserted and hooked upward from below.
In Patent Document 3 below, a rod-like protrusion fixed to a utility pole, a protrusion holding part having two halved cylindrical holding bodies, and a 2 Two grip portions for opening and closing each of the protrusion gripping portions, a connecting portion configured so that the opening and closing operations of the protrusion gripping portion and the grip portion are opposite to each other, and a spring for opening the two grip portions outward There is disclosed a metal wheel fixing bracket that can be operated using a manipulator having a gripper that sandwiches two grip portions and can compress a spring.

Japanese Patent Laid-Open No. 10-094125 JP 2000-134741 A Japanese Utility Model Publication No. 07-036519

However, since the conventional cable erection method uses a gold wheel, it requires the installation and removal work of the gold wheel, and thus the steps 1 to 8 described above are performed, so the total work time is 455 minutes. (= 100 minutes + 10 minutes + 15 minutes + 15 minutes + 100 minutes + 45 minutes + 120 minutes + 50 minutes). For this reason, there is a problem that it takes time to construct the cable.
In particular, at the time of emergency recovery, there is a demand for shortening the work time as much as possible in order to achieve early recovery.

  An object of the present invention is to provide a suspended metal fitting with a gold wheel and a cable erection method that can greatly shorten the cable erection operation time.

The hanging bracket with a gold wheel of the present invention is a hanging bracket with a gold wheel (10) used for laying a cable between the supports after the messenger wire (1) is laid between the supports. , A gold wheel mounting means (12-15) for mounting only one gold wheel (11) and mounting the gold wheel to a pillar metal object (2) attached to the support, and the support ; and a messenger wire fixing means for secure the erection has been the messenger wire between objects (16 to 18), the gold wheel attachment means, and a top plate portion and two side plate portions, and, A gold wheel support member (12) having a U-shaped cross section, and a support shaft (13) fixed at both ends near the lower ends of the two side plate portions of the gold wheel support member, The gold wheel is the two side plates of the gold wheel support member. The presser plate (16) is mounted so that the messenger wire fixing means sandwiches and fixes the messenger wire laid between the supports together with the gold wheel. ) Is provided .
Here, said gold wheel mounting means, the lower end of said fixing bolt which is fixed to the upper plate portion of the gold wheel support member (14), screwed with the fixing bolts and the gold wheel support You may further provide the fixing nut (15) which attaches the said suspension bracket with a gold wheel to this pillar metal object on both sides of the said pillar metal object with the upper-plate part of a member.
The presser plate is provided in a space between the upper plate portion of the gold wheel support member and the gold wheel between the two side plate portions of the gold wheel support member, and the messenger wire fixing means is provided. A presser bolt (17) having a lower end fixed to the upper surface of the presser plate, a bolt head at the upper end, and moving the presser plate along the axial direction to move it closer to or away from the gold wheel And a lock nut (18) that is attached to the upper side of the upper end surface of the fixing bolt of the presser bolt and that holds the presser bolt after the messenger wire is gripped by the metal wheel and the presser plate. ) and further wherein the securing bolt has a cylindrical shape, it said and pressing bolt through said fixing bolts, the inner peripheral surface of the fixing bolts, the pressing bolt and screwed screws The groove is cut It may be.
The bolt head of the presser bolt and the outer diameter of the lock nut may be smaller than the outer diameter of the fixing bolt.
The shape of the outer peripheral surface of the gold wheel and the lower surface of the presser plate may be a semi-cylindrical surface.
The cable erection method of the present invention is a cable erection method for laying a cable between support members after the messenger wire (1) is laid between the support members by using the suspended bracket with a metal wheel of the present invention. A first step of attaching the hanging hardware with the gold wheel to the pillar metal hardware, a second step of passing the messenger wire through the gold wheel between the supports, and between the supports. A third step of fixing the messenger wire installed between the metal wheel and the presser plate , a fourth step of attaching a coiled hanger to the messenger wire installed between the supports, And a fifth step of constructing a cable between the supports while passing the cable through the coiled hanger.

The suspension bracket with a gold wheel and the cable erection method of the present invention have the following effects.
(1) By installing a gold wheel mounting means for mounting the gold wheel on the pillar metal object attached to the support and attached to the metal wheel, it is possible to install the pillar metal object and the suspended hardware with the gold wheel. The messenger wire fixing means for fixing the messenger wire laid between the supports together with the gold wheel can be shortened, and the fixing time of the messenger wire can be shortened and the cable extension can be shortened. Since the work for removing the gold wheel after the wire can be eliminated, it is possible to greatly shorten the cable laying time.
(2) Since the cable can be erected quickly at the time of disaster recovery or the like, the communication failure time can be shortened.

It is a figure which shows the structure of the hanging bracket with a gold wheel by one Example of this invention, (a) is a front view, (b) is a right view. It is a figure for demonstrating the usage method of the hanging bracket with a gold wheel shown in FIG. 1, (a) is a front view, (b) is a right view. It is a figure for demonstrating the usage method of the hanging bracket with a gold wheel shown in FIG. 1, (a) is a front view, (b) is a right view. It is a figure for demonstrating the usage method of the hanging bracket with a gold wheel shown in FIG. 1, (a) is a front view, (b) is a right view. It is a figure for demonstrating the usage method of the hanging bracket with a gold wheel shown in FIG. 1, (a) is a front view, (b) is a right view. It is a figure which shows the comparison of the working time when using the suspension metal fitting 10 with a gold wheel shown in FIG. 1, and using the conventional gold wheel, (a) is a suspension with a gold wheel shown in FIG. The figure which shows the work procedure and work time when using the metal object 10, (b) is a figure which shows the work procedure and work time when using the conventional gold wheel.

  The above object is realized by attaching the gold wheel support member to which the gold wheel is attached to the arm metal and fixing the messenger wire constructed through the gold wheel between the gold wheel and the presser plate.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a hanging bracket with a metal wheel and a cable erection method according to the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 (a) and 1 (b), a suspended bracket 10 with a gold wheel according to an embodiment of the present invention includes a gold wheel 11, a gold wheel support member 12, a support shaft 13, and a fixing bolt. 14, a fixing nut 15, a presser plate 16, a presser bolt 17, and a lock nut 18.

Here, the metal wheel support member 12, the support shaft 13, the fixing bolt 14, and the fixing nut 15 are the metal fittings to which the metal wheel 11 is attached and the metal wheel 11 is attached to the power pole (support). It functions as a gold wheel mounting means for mounting on (arm 2 or the like).
The presser plate 16, the presser bolt 17 and the lock nut 18 function as messenger wire fixing means for fixing the messenger wire 1 laid between the power poles (supports) together with the metal wheel 11.

  The gold wheel support member 12 includes an upper plate portion and two side plate portions, and has a transverse cross-sectional shape (a shape when viewed along the longitudinal direction of the messenger wire 1 indicated by a one-dot chain line in FIG. 1A). Has the shape of

The gold wheel 11 is attached between two side plate portions of the gold wheel support member 12 so as to be rotatable around a support shaft 13 whose both ends are fixed near the lower end portions of the two side plate portions of the gold wheel support member 12. It has been.
The shape of the outer peripheral surface of the gold wheel 11 is a semi-cylindrical surface in order to increase the contact surface with the messenger wire 1.

The lower end of the fixing bolt 14 is fixed to the central portion of the upper plate portion of the gold wheel support member 12.
Through holes for penetrating the fixing bolts 14 are formed on the upper surface and the lower surface of the arm metal 2 shown by broken lines in FIG. As a result, the fixing bolt 14 is passed through the through hole in the lower surface of the arm metal 2, then the through hole in the upper surface of the arm metal 2 is inserted, and then the fixing nut 15 that is screwed with the fixing bolt 14 is tightened. By sandwiching the arm metal 2 between the fixing nut 15 and the upper plate portion of the metal wheel support member 12, the hanging metal object 10 with the metal wheel can be attached to the arm metal 2.

  The fixing bolt 14 has a cylindrical shape, and a screw groove that is screwed with the presser bolt 17 is cut on the inner peripheral surface of the fixing bolt 14.

The presser plate 16 is provided in a space between the upper plate portion of the gold wheel support member 12 and the gold wheel 11 between the two side plate portions of the gold wheel support member 12. Further, the lower end of the presser bolt 17 is fixed to the center of the upper surface of the presser plate 16.
Thereby, by rotating the presser bolt 17, the presser plate 16 can be moved along the axial direction of the presser bolt 17 (that is, up and down in FIG. 1A) so as to be close to or away from the gold wheel 11. .
In addition, the cross-sectional shape of the presser plate 16 (the shape when viewed along the longitudinal direction of the messenger wire 1 shown by the alternate long and short dash line in FIG. 1A) increases the contact surface with the messenger wire 1. It is cylindrical surface shape (refer FIG.1 (b)). In addition, the shape of the lower surface of the pressing plate 16 may be a semi-cylindrical surface shape, and the shape of the upper surface of the pressing plate 16 may not be a semi-cylindrical surface shape.

  The lock nut 18 is attached to the upper side of the upper end surface of the fixing bolt 14 of the presser bolt 17. After the presser plate 16 is moved downward and the messenger wire 1 is gripped by the gold wheel 11 and the presser plate 16. Further, the presser bolt 17 is fixed by turning the lock nut 18 and tightening the upper end surface of the fixing bolt 14 with the lock nut 18.

  The bolt head of the presser bolt 17 and the outer diameter of the lock nut 18 allow the presser bolt 17 and the lock nut 18 to pass through the through holes in the upper surface and the lower surface of the arm metal 2 together with the fixing bolt 14. It is made smaller than the outer diameter of the fixing bolt 14 so that the fixing nut 15 can be screwed onto the fixing bolt 14 through the lock nut 18.

Next, the usage method of the hanging bracket 10 with a gold wheel is demonstrated with reference to FIGS.
First, as shown by arrows in FIG. 2, the worker inserts from the bolt head of the presser bolt 17 into the through hole formed on the lower surface of the arm metal 2 attached to the utility pole, thereby lowering the lower surface of the arm metal 2. The fixing bolts 14 are passed through the through holes formed in the upper surface until the upper surface of the metal wheel support member 12 contacts the lower surface of the arm metal 2.

  Subsequently, as shown in FIG. 3, the operator passes the bolt head of the presser bolt 17 and the lock nut 18 through the fixing nut 15 and then turns the fixing nut 15 so that the lower surface of the fixing nut 15 is the arm. The suspension bracket 10 with the gold wheel is attached to the arm metal 2 by screwing with the fixing bolt 14 until it contacts the upper surface of the gold 2.

  Subsequently, the worker passes the messenger wire 1 through the gold wheel 11 and extends the wire, and then turns the presser bolt 17 to move the presser plate 16 toward the gold wheel 11 as shown by an arrow in FIG. Thus, the messenger wire 1 is sandwiched and fixed between the gold wheel 11 and the presser plate 16.

  Subsequently, as shown in FIG. 5, the worker fixes the presser bolt 17 by rotating the lock nut 18 until the lower surface thereof contacts the upper surface of the fixing bolt 14.

Next, a procedure for performing a cable laying operation of laying a communication cable between utility poles using the suspended metal fitting 10 with the gold wheel will be described with reference to FIG.
In addition, the work time in each work procedure at the time of constructing a 500 m communication cable between ten utility poles is shown in parentheses.
(Procedure 1) Installation work of the column hardware and the suspended bracket 10 with the gold wheel (100 minutes = 10 minutes / piece × 10 pieces)
Attaching the armored hardware such as a free band and armature and the suspension bracket 10 with a gold wheel to each power pole (Procedure 2) Rope drawing work (15 minutes)
Wire drawing while passing the rope through the hanging bracket 10 with the gold wheel (Procedure 3) Wire drawing of the messenger wire (15 minutes)
After attaching the messenger wire 1 to the end of the rope, pulling the tip of the rope to wire the messenger wire 1 (Procedure 4) Fixing the messenger wire (30 minutes = 3 minutes / piece × 10 pieces)
Work to fix the messenger wire 1 to the hanging bracket 10 with the gold wheel (Procedure 5) Mounting work such as coiled hanger (45 minutes = 5 minutes / span x 9 spans)
A work for attaching a coiled hanger or the like to the messenger wire 1 by extending the coiled hanger or the like along the messenger wire 1 (Procedure 6) Communication cable wire drawing / processing work (120 minutes = wire drawing 60 minutes × 2 )
Work to handle excess length after extending communication cable through coiled hanger

  As described above, when the hanging bracket 10 with the gold wheel is used, the mounting work time of the pillar hardware and the hanging bracket 10 with the gold wheel and the fixing of the messenger wire 1 are compared with the case of using the conventional gold wheel. The work time can be shortened and the removal work of the gold car after cable extension can be eliminated, so the total work time is 325 minutes, compared to the total work time of 455 minutes when using a conventional gold wheel. The working time can be shortened by about 130 minutes.

DESCRIPTION OF SYMBOLS 1 Messenger wire 2 Arm metal 10 Suspension bracket with gold wheel 11 Metal wheel 12 Metal wheel support member 13 Support shaft 14 Fixing bolt 15 Fixing nut 16 Press plate 17 Presser bolt 18 Lock nut

Claims (6)

A hanging bracket (10) with a wheel used for laying a cable between the supports after the messenger wire (1) is laid between the supports,
A gold wheel mounting means (12 to 15) for mounting only one gold wheel (11) and mounting the gold wheel to a pillar metal object (2) attached to the support;
The messenger wire fixing means (16-18) for secure the erection has been the messenger wire between the support material; and a,
The gold wheel support member (12), wherein the gold wheel mounting means includes an upper plate portion and two side plate portions, and has a U-shaped cross-sectional shape;
A support shaft (13) fixed at both ends near the lower ends of the two side plate portions of the gold wheel support member,
The gold wheel is rotatably mounted around the support shaft between the two side plate portions of the gold wheel support member,
The messenger wire fixing means includes only one presser plate (16) for fixing the messenger wire laid between the supports together with the gold wheel.
A hanging bracket with a gold wheel. The gold wheel mounting means is
A fixing bolt (14) having a lower end fixed to the upper plate portion of the gold wheel support member;
A fixing nut (15) that is screwed to the fixing bolt and that attaches the suspended bracket with the metal wheel to the pillar metal object with the upper metal part of the metal wheel supporting member sandwiched between the pillar metal object. In addition,
The suspended bracket with a gold wheel according to claim 1, characterized in that: The presser plate is provided in a space between the upper plate portion of the gold wheel support member and the gold wheel between the two side plate portions of the gold wheel support member;
The messenger wire fixing means is
A presser bolt (17) having a lower end fixed to the upper surface of the presser plate, a bolt head at the upper end, and moving the presser plate along the axial direction so as to approach or move away from the gold wheel ,
A lock nut (18) that is attached to the upper side of the fixing bolt of the presser bolt and that holds the presser bolt after gripping the messenger wire by the metal wheel and the presser plate; Further comprising
The fixing bolt has a cylindrical shape,
The presser bolt penetrates the fixing bolt;
On the inner peripheral surface of the fixing bolt, a screw groove to be screwed with the presser bolt is cut.
The hanging bracket with a gold wheel according to claim 2, characterized in that:   The suspended metal fitting with a gold wheel according to claim 3, wherein an outer diameter of the bolt head and the lock nut of the presser bolt is smaller than an outer diameter of the fixing bolt.   The suspended metal fitting with a gold wheel according to claim 3 or 4, wherein a shape of an outer peripheral surface of the gold wheel and a lower surface of the presser plate is a semi-cylindrical surface. A cable erection method for laying a cable between support members after the messenger wire (1) is laid between support members using the suspended bracket with a gold wheel according to any one of claims 1 to 5. ,
A first step of attaching the suspended bracket with the gold wheel to the post fitting;
A second step of passing the messenger wire through the gold wheel between the supports;
A third step of fixing the messenger wire laid between the supports by sandwiching the gold wheel and the press plate ;
A fourth step of attaching a coiled hanger to the messenger wire laid between the supports;
A fifth step of constructing between the supports while passing the cable through the coiled hanger;
A cable erection method characterized by comprising:

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