JPH10215511A - Cable-laying method and laying truck thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the work of cable laying by pulling out a plurality of cables from each small-diameter cable drum, while restricting the rotation of a drum supporting shaft by brake means and, at the same time by extending the cables to a cable laying passage. SOLUTION: The length wound round a large-diameter cable drum is measured, and a predetermined length of a plurality of cables are wound round small-diameter cable drums. Then, these small-diameter cable drums 3 are supported together by a drum supporting shaft 4 of a cable-laying carriage 38, and a plurality of cables are pulled out from respective small-diameter cable drums 3, while restricting the rotation of the drum supporting shaft 4. At the same time, they are extended and laid on a cable-laying passage. By doing this, the work of cable laying can be performed easily, and the cables can be laid more quickly and reliably.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable laying method for simultaneously and rapidly laying a plurality of control cables or power cables on a cable laying path such as a cable tray or a cable ladder of a building in various plant facilities, and a method for laying the cable. It relates to a trolley to be used.

[0002]

2. Description of the Related Art Conventionally, the preparation work before cable laying is carried out by transporting several types of large cable drums to be laid from a cable drum storage place to a laying place, where a large drum jack is installed, and a cable drum is mounted thereon. It was mounted and the cable was extended directly from the large cable drum to the cable laying path. After laying, the cable drum was removed, and the large cable drum was returned to the cable drum storage area again.

[0003]

However, moving and installing a large cable drum requires a lot of time and labor, and when the drum jack is installed in a small place, the cable drum needs to be installed. Difficulty often existed. Accordingly, it is an object of the present invention to provide a cable laying method and a laying cart used for the cable laying in which the laying of the cable is extremely easy and the cable can be laid quickly and reliably.

[0004]

A cable laying method according to the present invention provides a large cable drum 1 having a large winding diameter.
Measuring the length of the cable 2 wound around the cable 2 and winding the cable 2 around a plurality of small-diameter cable drums 3 each having a smaller diameter by a predetermined length; And pulling out a plurality of cables 2 from the respective small-diameter cable drums 3 while simultaneously suppressing the rotation of the drum support shaft 4 by the brake means 5 and simultaneously extending the cable to the cable laying path. It is.

In a preferred embodiment of the present invention, the plurality of small-diameter cable drums 3 are connected to the same drum support shaft 4.
Is to be held. Next, the cable laying cart of the present invention is used in the cable laying method of the present invention, and includes a cart main body 6 and the drum support shaft 4 rotatably supported by the cart main body 6. And a brake means 5 attached to the drum support shaft 4 for braking the rotation of the pulley 7 so that the plurality of small-diameter cable drums 3 are detachably fixed to the drum support shaft 4 in parallel. It is what was constituted.

[0006]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view showing a first step of the cable laying method of the present invention, the front view thereof, FIG. 2 is a plan view thereof, and FIG. 3 is a shaft 31 for mounting the small-diameter cable drum 3, 4 is a perspective view of the small diameter cable drum 3 and the shaft fixing flange 30. FIG. 5 is a front view of a cable laying cart 38 used in the cable laying method of the present invention. Fig. 6 is a plan view of the same, Fig. 7 is a partially enlarged view taken along the line VII-VII of Fig. 6, and Fig. 8 is a plurality of small-diameter cable drums 3 mounted on a drum support shaft 4 of the cable laying truck and the same. FIG. 3 is a perspective view of a coupling 21 for connecting between the components. In the cable laying method of the present invention, as a first step, as shown in FIGS. 1 and 2, a cable 2 wound around a large-diameter cable drum 1 is measured, and a plurality of small-diameter cable drums 3 having a predetermined length are measured. And a step of winding the cable 2. For this purpose, in this example, the large-diameter cable drum 1 is mounted on the large-diameter drum support device 8, the cable 2 wound therearound is pulled out, and the cable for small-diameter drum is wound via the length measuring device 12 and the cable cutting device 14. The cable 2 is guided to a take-up device 36, and the cable 2 is wound around a small-diameter cable drum 3 attached to the shaft 31 by a predetermined length.

Usually, the diameter and the axial width of the small-diameter cable drum 3 are less than half those of the large-diameter cable drum 1. The large-diameter drum supporting device 8 is shown in FIG.
As shown in the figure, a pair of drum placing rollers 8a are arranged in parallel, and the interval between them can be adjusted by a roller adjusting gear motor 8b. That is, the rotating shaft of the roller adjusting gear motor 8b was transmitted to a pair of screw shafts via a bevel gear, and both ends of the rotating shaft of one drum placing roller 8a were supported by a pair of moving members screwed thereto. Things. Then, the pair of drum mounting rollers 8a is moved toward and away from each other according to the outer diameter of the large-diameter cable drum 1. An electromagnetic clutch 8f and a one-way clutch 8 are attached to the other drum loading roller 8a.
e, a roller driving motor 8c via an electromagnetic brake 8d
Are connected. An operation box 8g is provided at the front end of the large-diameter drum supporting device 8, whereby the roller adjusting gear motor 8b and the roller driving motor 8c are turned off.
N, OFF operation and electromagnetic clutch 8f and other ON,
An OFF operation is performed. Further, a swing arm 9 is provided in front of one of the drum mounting rollers 8a, and the cable 2 is wound around the swing arm 9 to apply tension to the cable 2.

Next, the cable guide 11, the length measuring device 12, and the cable cutting device 14 are sequentially arranged on the carriage 37 from the upstream side to the downstream side. The length measuring device 12 is provided with a length measuring roller, and measures the length of the cable 2 passing therethrough. Next, the cable 2 is cut by the cable cutting device 14. A liquid crystal panel 13 is provided for setting conditions of the cable length device and the cutting device.
Next, in the cable winding device 36 for a small-diameter drum, the center hole of the small-diameter cable drum 3 is removably inserted into the shaft 31 connected to the motor 34 with a brake. This shaft 31
As shown in FIG. 3, a flange 30 is fixed to one end of the cable drum, and the flange 30 and the end of the small-diameter cable drum 3 are fitted. FIG. 4 shows this state. That is,
A convex portion is formed on one end surface of the flange 30, and a concave portion corresponding to the convex portion is formed on an end portion of the small-diameter cable drum 3. After the small-diameter cable drum 3 is inserted into the shaft 31, a stopper 33 is detachably fastened and fixed to one end of the shaft 31.

The cable 2 is wound around the small-diameter cable drum 3 via the traverser mechanism 27 by the small-diameter drum cable winding device 36 thus constructed. And, with the rotation of the motor with brake 34, the traverser mechanism
27 performs a reciprocating motion, and aligns the winding line of the cable 2 wound around the small-diameter cable drum 3. Further, the cables 2 cut to a predetermined length are respectively wound around small-diameter cable drums 3, and the plurality of small-diameter cable drums 3 are integrally formed with the drum support shaft 4 of the cable laying cart 38 shown in FIGS. Supported. The cable laying cart 38 is provided with a drum support shaft 4 at the upper end of a frame 6 a raised on the cart body 6.
Is axially supported via a pair of bearings 19. Below the bogie main body 6, caster-type wheels 22 protrude via a parallel link mechanism 23. This parallel link mechanism 23
Is lowered by pulling it down from the state shown in the figure.
Can be moved downward to separate the fixing leg 24 below the carriage body 6 from the installation surface.

Next, a pulley 7 is attached to one end of the drum support shaft 4 and a belt 18 is wound therearound. One end of the belt 18 is fixed to the frame 6a, and the other end is fixed to the shaft end of the handle 17. Handle 17
It is screwed to the frame 6a via a handle support 26. Then, by rotating the handle 17, the screw shaft is moved in the axial direction, and thereby the tension of the belt 18 is adjusted. The handle 17, the belt 18, and the pulley 7 constitute the brake unit 5. Next, in the small-diameter cable drum 3 mounted on the drum support shaft 4 of the cable-laying cart 38, the center of the right-most small-diameter cable drum 3 in the figure is fitted and fixed to the flange 30 fixed thereto. The intermediate portion and the small-diameter cable drum 3 at the left end are connected via a coupling 21, respectively.
As a result, it is fixed to the drum support shaft 4 so as not to come off. As shown in FIG. 8, the coupling 21 has projections projecting from both ends thereof, and each projection fits into a recess provided at an end of each small-diameter cable drum 3.

The cable laying cart 38 thus constructed
Has a plurality of small diameter cable drums 3 (three in this example)
Are detachably mounted on the drum support shaft 4. Then, the handle 17 is adjusted, and the drum support shaft 4 is prepared to rotate with an appropriate torque. The lengths of the cables 2 wound around the respective small-diameter cable drums 3 are exactly the same. The rotation of the drum support shaft 4 causes the cables 2 to be fed out from the respective small-diameter cable drums 3 by the same length, and to be laid simultaneously on a cable laying path (not shown). That is, the tips of the three cables 2 wound around the respective small-diameter cable drums 3 are combined into one,
The wire is routed to the cable laying path by an appropriate cable stretching device.

[0012]

The cable laying method of the present invention comprises the steps of measuring the length of the cable 2 of the large-diameter cable drum 1 and winding the cable 2 around a plurality of small-diameter cable drums 3; The plurality of small-diameter cable drums 3 are held on a drum support shaft 4 and brake means 5
And pulling out the plurality of cables 2 while suppressing the rotation of the drum. Therefore, preparation work for laying a plurality of cables at the same time can be performed easily and quickly. In other words, in the conventional cable laying work, a large number of large types of cable drums are transported from the cable drum storage area to the place where cable laying is started, the cable drums are installed on a large drum jack, and directly extended to the cable laying path. Since the wires were wired, a great deal of labor and time were required for the preparation work before laying the cable. However, according to the present method, such work can be greatly reduced.

When the plurality of small-diameter cable drums 3 are supported on the same drum support shaft 4, the plurality of cables 2 can be easily pulled out from the small-diameter cable drum 3. In addition, the cable laying cart of the present invention,
Brake means for use in the cable laying method, which brakes the rotation of the bogie body 6, the drum support shaft 4 rotatably supported by the bogie body 6, and the pulley 7 attached to the drum support shaft 4. 5 and a plurality of small-diameter cable drums 3 are fixed to the drum support shaft 4 in parallel and detachably. Therefore, the structure is simple and a plurality of cables can be pulled out simultaneously and reliably, resulting in a cable laying cart with good workability.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a first step of a cable laying method of the present invention, and is a front view thereof.

FIG. 2 is a plan view of the same.

FIG. 3 is a mounting shaft 31 for the small-diameter cable drum 3 in the cable laying method of the present invention.
FIG.

FIG. 4 is a perspective view of a small-diameter cable drum 3 and a shaft fixing flange 30 in the cable laying method of the present invention.

FIG. 5 is a front view of a cable laying cart 38 used in the cable laying method of the present invention.

FIG. 6 is a plan view of the same.

FIG. 7 is a partially enlarged view taken along the line VII-VII of FIG. 6;

FIG. 8 is a perspective view of a plurality of small-diameter cable drums 3 mounted on the drum support shaft 4 of the cable laying cart and a coupling 21 connecting between the small-diameter cable drums 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Large-diameter cable drum 2 Cable 3 Small-diameter cable drum 4 Drum support shaft 5 Brake means 6 Truck body 6a Frame 7 Pulley 8 Large-diameter drum support device 8a Drum mounting roller 8b Roller adjustment gear motor 8c Roller drive motor 8d Electromagnetic brake 8e One-way clutch 8f Electromagnetic clutch 8g Operation box 9,10 Swing arm 11 Cable guide 12 Length measuring device 13 LCD display panel 14 Cable cutting device 17 Handle 18 Belt 19 Bearing 20 Clamp 21 Coupling 22 Wheel 23 Link mechanism 24 Fixing leg 26 Handle support 27 Traverser mechanism 28 Encoder 29 Chain 30 Flange 31 Shaft 33 Stopper 34 Motor with brake 36 Cable winding device for small-diameter drum 37 Cart 38 Cart for cable laying

Claims (3)

[Claims] 1. A cable 2 wound around a large-diameter cable drum 1 having a large winding diameter, and the cables 2 are respectively transferred to a plurality of small-diameter cable drums 3 having a small diameter by a predetermined length. A winding step; holding the plurality of small-diameter cable drums 3 on a drum support shaft 4, and suppressing the rotation of the drum support shaft 4 by a brake means 5, and removing a plurality of cables 2 from each small-diameter cable drum 3. Drawing out and simultaneously extending the cable to the cable laying path. 2. The cable laying method according to claim 1, wherein the plurality of small-diameter cable drums are held on a same drum support shaft. 3. A truck for cable laying used in the cable laying method according to claim 1, wherein the truck body 6; the drum support shaft 4 rotatably supported by the truck body 6; And a brake means (5) mounted on the drum support shaft (4) for braking the rotation of the pulley (7), wherein the plurality of small-diameter cable drums (3) are detachably fixed in parallel to the drum support shaft (4). Trolley for cable laying.