JPH0447532B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an overhead cable extension method and equipment such as a cable carrier.

(Prior art) Conventionally, as shown in Fig. 13, in the extension of an overhead cable, a support line (A) is stretched in advance on each utility pole or tower (B) using a support (C), and one end of this support line (A) is connected to a metal wheel with an impeller. Hang them at intervals of one point, place a cable ho on these metal wheels with impellers, connect these metal wheels with impellers to each other with a connecting rope, and pull them to the other end along support line A. The cable hoop is being stretched.

In order to prevent derailment from the support wire A, this metal wheel with an impeller passes the support wire A through the closed space of the metal wheel N, and when passing through the support C, insert the support C between the blades of the impeller. It is designed to pass through by turning a lever impeller.

(Problem to be solved by the invention) However, according to this construction method, a large number of impeller wheels are required to suspend the impeller wheels from the support wire at regular intervals of the cable, resulting in high construction costs. I'm getting used to it. Moreover, it is time-consuming to install support lines on utility poles, steel towers, etc. in advance. Furthermore, when extending a cable while pulling an impeller wheel in this way, the connecting rope of each impeller wheel is usually installed at the lower end so that it does not get caught on the support wire, etc. Since each metal wheel with an impeller is pulled by a connecting rope, the direction of this tension and the direction of the support line on which the metal wheel is placed may not match in front and behind the steel tower, etc., so that the wire can be stretched smoothly. There is a drawback that it is not done.

(Means for Solving the Problems) Therefore, the present invention provides a supporter installed on a utility pole or a steel tower with an impeller, and a wire extension rope and a parent wire connected to the end of the extension rope are attached to the impeller-equipped supporter. The above problems can be solved by providing a construction method in which carriers are provided at regular intervals for the parent wire to pass through, the cable is suspended from these carriers, and the cable is extended simultaneously with the parent wire, and equipment used in this method. This is an attempt to resolve the issue.

Next, the specific configuration of this invention will be described.

The first invention is to provide a support with an impeller on each support in the section where the line is to be extended, pass a wire extension rope through each of these supports with an impeller, and connect a parent wire to the rear end of the extension rope. , a plurality of carriers are suspended from one end of the section to be extended to this parent wire at regular intervals, and the cables are supported at regular intervals on each of these carriers, and the cables are extended at the other end of the section to be extended. By pulling the rope, the main wire is pulled out between the above-mentioned supports, and each of the impeller-equipped supports passes the main wire etc. into the closed space, and each of the above-mentioned carriers is inserted between the impeller blades to rotate the impeller. This is a construction method in which the cable is extended between the supports, and the second invention is a construction method in which the cable is extended between the support columns from the center of the shaft rotatably extended between the tops of both sides of the approximately U-shaped frame. A link piece is provided that projects horizontally in the direction, and a wire gripper is provided at the tip of each of these link pieces, and each of these wire grippers is locked in the longitudinal direction with respect to the wire to be gripped, and A cable extension method in which the U-shaped frame is configured to be freely rotatable, and the lower center of the U-shaped frame is separable, a hanging wire is suspended from the lower center of the frame, and a holder for supporting the cable is provided at the lower end of the hanging wire. This is a cable carrier used for.

(Function) The extending parent wire passes through the closed space of the impeller-equipped support supported by each support. The carriers suspended from the parent wire at regular intervals enter between the adjacent blades of the impeller, and are rotated by the tension of one of the wires to pass through the impeller. Therefore, the support of the parent wire passes through the closed space at each impeller-equipped support, so that it does not derail or come off the support. Furthermore, since the carrier that supports the cable is also fixed to the parent wire, there is no risk of it coming off the parent wire.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

First, the wire support used in the construction method of this invention will be explained.

In Figures 1 to 4, 1 is a frame made of a square pipe forming a portal shape, 2 is a shaft extending between the lower parts of both sides of this frame 1, and 3, 3 is a shaft that rotates via a bearing 4 on this shaft 2. With two impellers installed freely, these two impellers 3
are supported on the shaft 2 by spacers 5 at intervals. 6, 6, 6... are rotatably provided on both sides of the tips of the many blades 3a of each impeller 3, and 7 is a rotatably provided bush 8 provided through the upper center of the frame 1. The provided hanger bolt, 9, is this hanger bolt 7.
a clevis fixed to the upper end; 10 a clevis bolt passing through the clevis 9; 11 a clevis nut of the clevis bolt 10; 12 a yoke with the clevis bolt 10 passed through its hole 13;
14 is a small hole provided in the yoke 12; 15 is an arcuate frame protruding from the front and back of both side pillars of the frame 1;
Reference numeral 16 denotes a wire support body supported rotatably along the circumferential edge of the two impellers 3, 3, and this wire support body 16 has two supporting pieces 1.
Two wheel shafts passed between 7 and 17 1
8 (one is not shown), the wheel 19 can be rotated freely.
It is configured with the following. Further, each support piece 17 is provided with an arc-shaped hollow part 20 penetrating to both end faces in the longitudinal direction, and an opening groove 21 is provided at the upper end of this hollow part 20 along the longitudinal direction of this hollow part 20. The tip of each blade 3a of each impeller 3 can be inserted into the hollow portion 21, and the bearing 6 can be inserted into the hollow portion 20. Further, each support piece 17 is divided into two in the longitudinal direction along the center of the cross section of the hollow portion 20, and each of these divided pieces 1
7a and 17b are overlapped and fixed with bolts 22. Each wheel 19 is rotatably supported via a bearing 23 on the outer periphery of a shaft 18 whose one end is fixed to a split piece 17a of one support piece 17, as shown in FIG. A bolt 26 is screwed into the screw hole 24 through the hole 25 of the divided piece 17a of the other support piece 17, and when these bolts 26 are removed, the other support piece 17 becomes free with respect to the one support piece 17,
It can rotate along the circumferential edge of the impeller 3. Therefore, this allows wires and the like to be attached to and removed from each wheel 19.

Note that 27 is a spacer provided on the outer periphery of each bolt 26 between the head of each bolt 26 and the divided piece 17a, and 28 is connected at one end to each of these spacers 27, and the other end is connected to each of the bolts 22. It is a chain connected together.

Next, the cable carrier used in the construction method of this invention will be explained.

In FIGS. 5 to 8, 30 is a U-shaped frame, and this U-shaped frame 30 is divided into two frame pieces 30a, 30a at the center of the lower part. The protruding pieces 31 and 31 protruding from the bolt 32 and the nut 3
It is fixed at 3. Reference numeral 34 denotes a shaft extending over both sides of the upper part of this U-shaped frame 30, and this shaft 34 is rotatable with respect to the U-shaped frame 30. 35, 35 are two link pieces rotatably protruding from the center of the shaft 34 in the front and back direction of the U-shaped frame 30, and 36, 36 are shafts on the outside of these two link pieces 35, 35. The flat washers 37, 37 provided on the outer periphery of the shaft 3 are in contact with the outer surfaces of the respective flat washers 36.
4, each flat washer 36 is attached to each link 3 by the force of these spring pins 37.
Cannot rotate against 4. Reference numerals 38 and 38 indicate gripping tools suspended from the tips of each of the link pieces 35, and each of these gripping tools 38 consists of two gripping pieces 38 whose lower portions are curved.
The upper parts of 38a and 38a are stacked on top of each other with the link pieces 35 interposed therebetween, and are fixed with a tightening bolt 39 passing through them and a nut 40 screwed onto this bolt 39. Reference numeral 41 denotes a wire gripping hole formed in the lower part of this gripper 38, and this wire gripping hole 41 has an inner diameter larger than the diameter of a parent wire 50, which will be described later. 42 is a hanging wire whose upper end is wound around and fixed to the bolt 32 between the two protrusions 31, 31, 43 is a cable holder with a substantially U-shaped cross section, and a bolt 44 passes through the upper part of this holder 43. The lower end of the hanging wire 42 is wound around and fixed. 45 is a nut screwed onto one end of this bolt 44.

Next, the construction method of this invention will be explained with reference to FIGS. 9 to 12.

First, as shown in FIG.
4 through wires etc. 48, and in this way, as shown in Fig. 10, the cable is extended to each of the several sections of the pillars 46 (the figure is shown in the shape of a utility pole for the sake of explanation, but in most cases it is a steel tower). Suspend the wire support 47. Then, the wire rope 49 is passed through each wire supporter 47 in order from the pillar 46 at one end to the pillar 46 at the other end. At this time, it is also possible to shift and remove one support piece 17 of the wire support body 16 of each wire supporter 47, and to hang the wire extension rope 49 on each wheel 19 from that location. Then, as shown in FIG. 11, at one end of the wire extension section, the wire extension rope 49 is connected to the other end with the parent wire 50, and the wire extension rope 49
is pulled from the other end using a winch device 51. As a result, the parent wire 50 is let out from the drum 52 at one end. The above-mentioned cable carrier 53 is fixed at every fixed interval of the parent wire 50 being fed out.
As shown in FIG. 6, a lock 54 is fixed to the outer periphery of the parent wire 50, and the two gripping tools 38 of the cable carrier 53 are attached to the parent wire 50 by sandwiching the lock 54. As a result, since the outer diameter of the lock 54 is larger than the inner diameter of the wire gripping hole 41 of each gripper 38 of the cable carrier 53, the parent wire 5
The cable carrier 53 does not move in the longitudinal direction of 0, and the main wire 50 loosely passes through the wire gripping hole 41 of each gripper 38 as shown in FIG. It is rotatable. Then, as shown in FIGS. 6 and 9, the holder 43 of the cable carrier 53 is inserted into the holes 55a drilled at regular intervals in the cable 55 to be extended, and the cable 55 is placed in the cable carrier 53.
I support 5. In this way, the cable carrier 5
Cable 55 is supported by Cable 5
5 is fed out from the drum 56.

When each cable carrier 53 passes through the wire supporter 47 of each strut 46, each gripper 38 of the cable carrier 53 enters the groove of each wheel 19 of the wire supporter 47 together with the parent wire 50 and passes through. A shaft 34 protruding left and right from 38 locations of the gripping tool hits each of the lower blades 3a of the two impellers 3,3. Therefore, the wire support 16 supported at the lower part of these impellers 3, 3 does not move because of the tension of the parent wire 50, and the shaft 34 is moved by the tension of the parent wire 50 to the blades 3a, 3. Press 3a and press the two impellers 3,
3 rotates around the shaft 2 in the counterclockwise direction in FIG. 9, and the shaft 34 of the cable carrier 53 passes through 16 wire supports. At this time, the tips of the blades 3a of each impeller 3 and the bearing 6 pass through the hollow portion 20 of each support piece 17 of the wire support 16.

In this way, each cable carrier 53 passes through 47 locations of each wire supporter, and the main wire 50
is extended between each support column 46 as shown in FIG. 12, and a cable 55 is also extended therewith.

If this cable 55 is an optical cable for construction communication, etc., it can be used as is, and after the construction is completed, the parent wire 50 is pulled in the opposite direction to the above, and the cable 55 is recovered. If this construction period is long, each wire supporter 47 has one end fixed to the main wire 50 on both sides of the wire supporter 47, and the other end of the branch wire is fixed to the small hole 14 on both sides of the yoke 12, and the wire is wired as described above. Remove the bolt 26 of one support piece 17 of the support body 16, shift the support piece 17, remove the parent wire 50 from the wire support body 16, and also remove the clevis bolt 10 and clevis nut 11 and remove the frame 1 and below. You can also do that.

Moreover, as shown in FIG. 14, the wire supporter 47
If two of these are lined up and the arms 57 are connected between the columns on both sides of the frames 1, the angle of the parent wire 50 to each wire supporter becomes smaller, and the impeller 3 rotates more smoothly when the cable carrier 53 passes. It is possible to pass easily.

(Effects of the Invention) The present invention has the above-described configuration, and instead of placing support wires in advance on the supports of steel towers, telephone poles, etc. in the section where the line is to be extended, as in the past, the main wire serving as the support line is placed between each support. At the same time as the line is being extended, the cable is being extended. Therefore, one step can be omitted compared to the conventional construction method, and the entire lineside construction work can be simplified. Furthermore, since the parent wire is made to pass through a closed space at each wire supporter location, the parent wire will not be derailed from the supporter, and the wire can be reliably extended. In addition, because impeller-equipped supports are used only for each support, the cost of wire extension work is lower than the conventional construction method, which uses impellers at regular intervals on the cable, which requires a large number of impellers. Become. Furthermore, in this construction method, the cable carrier that supports the cable is supported by the parent wire, and the parent wire itself is pulled.
The pulling direction of the parent wire always matches the running direction of the cable carrier, and the cable carrier can run smoothly even when passing through the wire support location.

In addition, the cable carrier used in this cable extension method has a simple structure that is ideal for this method, and the cable carrier rotates the impeller of the wire supporter to always maintain a closed state as it passes. In addition, the cable carrier is rotatable around the parent wire, and the U-shaped frame is rotatable relative to the shaft that has the wire gripping tool. The carrier and cable are not affected by twisting or the like, and are always located at a predetermined position, that is, below the parent wire.

[Brief explanation of the drawing]

1 to 4 show a wire supporter used in the present invention, FIG. 1 is a partially sectional front view of the wire supporter, FIG. 2 is a side view of the same, and FIG. 3 is a front view of the wire supporter. FIG. 4 is an enlarged partial sectional front view of the wire support, FIG. 4 is an enlarged sectional view of the main part of the wire support, and FIGS. 5 to 8 show the cable carrier of the present invention, and FIG. 5 is a front view of the cable carrier. 6 is a side view of the same, FIG. 7 is an A-A end view of FIG. 5, FIG. 8 is a plan view of FIG. 7, and FIGS. 9 is a side view showing a cable carrier passing through the wire support device of the present invention, FIGS. 10 to 12 are explanatory diagrams showing the construction method steps, and FIG. An explanatory diagram showing the wire construction method, and FIG. 14 is a side view showing another embodiment of the wire support used in the present invention. In the figure, 1 is a frame, 3 is an impeller, 3a is a blade, 6 is a bearing, 9 is a clevis, 16 is a wire support body, 17 is a wire support piece, 19 is a wheel, 20 is a hollow part, 26 is a bolt, 30 is a U-shaped frame, 34 is a shaft, 35 is a link piece,
38 is a gripping tool, 39 is a tightening bolt, 42 is a hanging wire, 43 is a holder, 46 is a support, 47
49 is a wire supporter, 49 is a wire extension rope, 50 is a parent wire, 53 is a cable carrier, and 55 is a cable.

Claims (1)

[Claims] 1. A support with an impeller is provided on each support in the section where the wire is to be extended, a wire extension rope is passed through each of these supports with an impeller, and a parent wire is attached to the rear end of the wire extension rope. A plurality of carriers are suspended from one end of the section where the line is to be extended at regular intervals from this parent wire, and the cables are supported at regular intervals on each of these carriers. By pulling the wire extension rope at the end, the main wire is pulled out between the above-mentioned supports, and each of the above-mentioned supports with impellers passes the main wire etc. into the closed space, and each of the above-mentioned carriers is inserted between the blades of the impeller. Rotate the impeller and let it pass,
A cable extension method characterized by extending the cable between the supports. 2. A link piece is provided that projects horizontally from the center of the shaft that is rotatably extended between the upper sides of both sides of a substantially U-shaped frame in the front-rear direction of the shaft, and a wire gripper is provided at the tip of each of these link pieces. ,
Each of these wire gripping tools is configured to be locked in the longitudinal direction with respect to the wire to be gripped, and is rotatable around the wire, and the lower center of the U-shaped frame is separable, and the lower center of this frame is detachable. A cable carrier for use in a cable extension method, characterized in that a hanging wire is suspended from the suspension wire, and a holder for supporting the cable is provided at the lower end of the hanging wire.