JPH08340611A - Cable remover - Google Patents

Abstract

PURPOSE: To automatically easily remove a cable such as of a power line, a communication line, etc., laid in a round manhole and in a common trough, etc., for example. CONSTITUTION: The cable remover has a cable holding part 1 provided with a clamp holder 6 having a tapered surface 61 and a pair of wedgelike cable clamps 7.7 provided movably along the tapered surface 61 of the clamp holder 6, a drive means 2 for moving the cable holding part 1 forward and backward. And constitution is so made that a cable C may be put between both cable clamps 7.7 and held by the wedge function of the wedgelike cable clamps 7 with the tapered surface 61, and may be moved forward along with the cable holding part 1. When the cable holding part 1 is moved forward by the drive means 2, and that the cable held state by both cable clamps 7.7 may be released and only the cable holding part may move backwards, when the cable holding part 1 is moved backwards by the drive means 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable removing device used for removing cables such as power lines and communication lines wired in underground human holes and in caverns such as common ditches.

[0002]

2. Description of the Related Art As described above, when cables such as power lines and communication lines wired in underground caverns and in caverns such as common ditches become unnecessary, or when they are replaced with new cables, existing It is necessary to remove the cable, and conventionally, it has been removed manually, but there is a problem that it is heavy and labor-intensive, and it takes time.

[0003]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above problems, and it is an object of the present invention to provide a cable removing device capable of easily and quickly removing an existing cable.

[0004]

In order to achieve the above object, the cable removing device according to the present invention has the following configuration. That is, a cable holder having a clamp holder having a tapered surface, and a pair of wedge-shaped cable clamps movably provided along the tapered surface of the clamp holder, and a drive means for moving the cable holder forward and backward. When the cable gripping portion is moved forward by the driving means, the cable is clamped between the cable clamps by the wedge action with the taper surface of the wedge-shaped cable clamp, and the cable is moved forward together with the cable gripping portion. When the cable gripping portion is retracted by the means, the cable holding state by both cable clamps is released and only the cable gripping portion is retracted.

[0005]

[Operation] The cable removing device configured as described above,
Fixing on the end wall surface of a cable wiring duct in a human hole and a cave, and moving the cable grip portion forward and backward by a driving means to sequentially pull out the cables arranged in the duct and automatically remove them. Is possible.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cable removing device according to the present invention will be specifically described below based on the embodiments shown in the drawings. 1 (a) is a plan view showing an embodiment of the cable removing device according to the present invention, FIG. 1 (b) is a side view thereof, FIG. 2 (a) is a rear view, and FIG. 2 (b) is a front view. , (A) and (b) of FIG.
2A and 2B are cross-sectional views taken along line AA and BB in FIG.

The cable removing device of the illustrated example comprises a cable grip 1 and a drive means for moving the cable grip 1 forward and backward. In the present embodiment, a pair of hydraulic cylinders 2 are used as the driving means. The hydraulic cylinders 2 are arranged on both sides of a guide tube 3 for inserting a cable to be removed, and both end portions of the guide tube 3 are arranged. The pair of flanges 3a and 3b integrally fixed by welding or the like are attached and supported by bolts or the like not shown in the drawing.

The cable grip 1 is attached to the piston rods 2a, 2a of the pair of hydraulic cylinders 2, 2 via a mounting plate 4, etc., and the cable grip 1 is integrally mounted on the mounting plate 4. A substantially cylindrical case 5, a clamp holder 6 provided in the case 5, and a pair of wedge-shaped cable clamps slidably provided in an inner hole 60 having a tapered surface 61 formed in the clamp holder 6. It consists of 7.7.

In the illustrated example, the case 5 is divided into three parts 5a to 5c, and a pair of connecting bolts 8a each having one end screwed into the divided piece 5a on the mounting plate 4 side and the other end of each connecting bolt 8a. It is connected with a wing nut 8b that is screwed in to enable disassembly and assembly. In the figure, 9 is a protective frame provided on the front surface of the case 5. Further, although the clamp holder 6 is configured to be attached to the inner surface of the divided piece 5a of the case 5 with the screw 10 or the like in the illustrated example, it may be formed integrally with the case 5.

The inner hole 60 of the clamp holder 6 is formed in a substantially rectangular shape as shown in FIG. 3 (a), and tapered surfaces 61, 61 are formed on the left and right facing surfaces thereof as shown in FIG. 1 (a). Has been done. On the other hand, the wedge-shaped cable clamp 7
7 has a slope 71 formed on the opposite side of the opposing surfaces of both clamps 7 to face the tapered surface 61, and the tapered surface 61 and the slope 71 are each formed with a recess 62 having a substantially T-shaped cross section. The protrusion 72 is formed and slidably fitted.

Further, an arcuate surface 73 for contacting the outer peripheral surface of the cable to be removed and sandwiching the cable is formed on the inner surfaces of the clamps 7, 7 facing each other, and the arcuate surface 73 has a saw-toothed cross section. A non-slip ridge 73a is formed. In the figure, 11 is a positioning guide pin for preventing lateral displacement of both clamps 7 in FIG. 1 (a), and one end of the guide pin 11 is fixed to one clamp 7 by screw coupling or the like. The other end is slidably fitted in a hole formed in the other clamp. Reference numeral 12 is a compression coil spring that urges both clamps 7 and 7 toward the clamp holder 6 side to urge the clamps 7 and 7 toward each other.

In removing the cable C arranged in the wiring duct D or the like in the human hole H as shown in FIG. Cable C to be removed as shown in
The cable removing device is attached to the end wall surface W of the duct D in a state where the end portion is inserted into the guide tube 3 and the cable grip portion 1. The mounting means is appropriate, but in the embodiment, as shown in FIGS. 5 and 6, the flange 3a on the side opposite to the cable grip 1 is positioned on the duct wall surface W by the positioning member 15.
And the mounting wall 14 formed in the flange 3b on the cable gripping portion 1 side and the duct wall surface W
A tightening rod R with a tightening device T, a band, and the like are connected to a locking hook F provided on the upper part to tighten and fix.

As shown in FIG. 5, the positioning member 15 is composed of a mounting plate 15a for the flange 3a and a positioning plate 15b having a semicircular cross section integrally provided on the mounting plate 15a. In positioning and fixing the flange 3a to the duct wall surface W by the member 15, the positioning plate 15b is inserted into the wiring duct D, the mounting plate 15a is disposed in contact with the duct wall surface W, and the mounting plate 15a is integrated with the mounting plate 15a. The bolt 16a provided on the flange 3a is inserted into the mounting hole 13 (see FIG. 2A) formed on the flange 3a, and the nut 16b is connected and fixed. Alternatively, the positioning member 15 is attached to the flange 3a in advance, and the positioning member 1
The positioning plate 15b of No. 5 is inserted into the wiring duct D and positioned and fixed.

With the cable removing device attached to the duct wall surface W as described above, the hydraulic cylinders 2 and 2 are connected to the hydraulic cylinders 2 and 2 via the hydraulic switching device V such as the hydraulic feed pipe S and the switching valve as shown in FIG. It is connected to a hydraulic pressure supply source P such as a pump. In the state where the cable removing device is attached to the duct wall surface W as described above, the guide tube 3 is positioned on the extension line of the duct D,
The cable C inserted from the duct D through the guide tube 3 into the cable grip portion 1 is located between the clamps 7 as shown in FIG. Both clamps 7 ・ 7
Is pressed to the left by the spring 13 in the figure, and has a tapered sloped surface 71.6 formed on the contact surface with the clamp holder 6.
The cable C is held between the arcuate surfaces 73, 73 formed on the facing surfaces of the clamps 7, 7 by being pulled toward each other by 1.

In this state, when the hydraulic pressure is supplied from the hydraulic pressure supply source P to the both cylinders 2 through the hydraulic pressure switching device V to extend the piston rod 2a, the cable gripping portion 1 is moved to the position shown in FIG.
And advance to the right in FIG. At that time, the clamps 7 and 7 are urged toward each other by a wedge action with the tapered surfaces 61 and 61 of the holder 6 to clamp the cable C between the circular arc surfaces 73 and 73, and The saw blade-shaped anti-slip ridges 73a formed on the arcuate surface 73 bite into the outer peripheral surface of the cable C to prevent slippage with the cable, and the cable C advances rightward together with the cable grip 1.

Next, when the piston rod 2a of the hydraulic cylinder 2 has finished extending, the hydraulic pressure switching device V is switched to contract the piston rod 2a of the hydraulic cylinder 2, and the cable gripping portion 1 is moved to the left in FIGS. 1 and 4. Both clamps 7 retracting in one direction and holding the cable C at that time
-7, when the clamp holder 6 moves to the left, the clamping force by the wedge action is released, and the cable C
Does not retreat, but only the cable grip 1 retracts. The cable grip 1 by the hydraulic cylinder 2
The cable C arranged in the duct D is sequentially pulled out from the duct D by repeating the forward and backward movements, and the cable C can be automatically removed.

[0017]

As described above, the cable removing device according to the present invention includes a clamp holder having a tapered surface,
The cable holder has a pair of wedge-shaped cable clamps movably provided along the tapered surface of the clamp holder, and drive means for moving the cable grip portion forward and backward. When the section is advanced, the cable is clamped between the cable clamps by the wedge action with the tapered surface of the wedge-shaped cable clamp to advance the cable together with the cable gripping section, and when the cable gripping section is retracted by the driving means. Since the cable clamp state is released by both cable clamps and only the cable grip is retracted, the cable removal device is fixed to the end wall surface of the cable wiring duct inside the manhole and the cave, and driven. By moving the cable grip part back and forth by means, the cables arranged in the duct are automatically As it can be removed is pulled out, the it is possible to reduce the labor in comparison with the case of removal by conventional manpower so, there is an effect such that can greatly improve the work efficiency.

[Brief description of drawings]

FIG. 1A is a plan view showing an embodiment of a cable removing device according to the present invention. (B) is the side view.

FIG. 2A is a rear view of the cable removing device according to the above embodiment. (B) is a front view.

3A is a cross-sectional view taken along the line AA in FIG. 1B is a cross-sectional view taken along the line BB in FIG.

FIG. 4 is an explanatory view showing a usage state of the cable removing device according to the embodiment.

FIG. 5 is a side view showing a mounted state of the cable removing device according to the above embodiment.

FIG. 6 is a front view showing a mounted state of the cable removing device according to the embodiment.

[Explanation of symbols]

 1 cable grip 2 drive means (hydraulic cylinder) 3 guide tube 3a, 3b flange 4 mounting plate 5 case 6 clamp holder 7 cable clamp

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shosaku Tanabe 4-2-4 Kachidoki, Chuo-ku, Tokyo Inside Suda Manufacturing Co., Ltd. (72) Inventor Yasuhide Makino 4-4-2, Kachidoki, Chuo-ku, Tokyo Stocks Company Suda Factory

Claims (1)

[Claims] 1. A cable holder having a clamp holder having a tapered surface, and a pair of wedge-shaped cable clamps movably provided along the tapered surface of the clamp holder, and the cable holder is moved forward and backward. When the cable gripping portion is moved forward by the driving means, the cable is clamped between the cable clamps by the wedge action of the tapered surface of the wedge-shaped cable clamp to advance the cable together with the cable gripping portion. A cable removing device, characterized in that, when the cable gripping portion is retracted by the driving means, the cable clamping state by both cable clamps is released and only the cable gripping portion is retracted.