JPH0441702Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a fitting machine for pulling up cables used when laying, repairing, replacing, etc. various cables.
In particular, the present invention relates to a cam-type fitting machine for cable pulling that is equipped with a cam that can securely grip the cable and is suitable for use in pulling up submarine cables.

[Conventional technology]

Generally, during work such as laying, repairing, and replacing various cables, a cable pulling fitting machine is used to grasp the cable in order to pull it up.

As such conventional cable pulling fitting machines used on land, there are those shown in Fig. 4 (front view) and Fig. 5 (cross-sectional view taken along the - arrow in Fig. 4). It has a vice main body 21 and a slide vice 22 that can slide horizontally with respect to the vice main body 21.

A rotating shaft 23 is disposed horizontally within the vice body 21, and a female threaded portion 22a formed through the slide vise 22 is screwed into a male threaded portion 23a formed on the outer periphery of the rotating shaft 23. It matches. Further, a handle 24 is attached to one end of the rotating shaft 23, and the rotating shaft 23 is operated by operating the handle 24.
By rotating 3, the slide vise 22 is moved in parallel in the axial direction of the rotating shaft 23.

Further, the fitting portions at the lower ends of the vice body 21 and the slide vise 22 are configured symmetrically, and the fitting portions include gripping surfaces 25 and 2 facing each other.
6 is formed.

The gripping surfaces 25, 26 are provided with serrations 27, 27 for gripping the cable 11.

Note that a hanger 21a is provided protruding from the upper part of the vice body 21.

With the above-described configuration, the distance between the gripping surfaces 25 and 26 is adjusted in advance to be larger than the outer diameter of the cable 11, and the gripping surfaces 25 and 26 allow the cable 1
1, and while operating the handle 24, hold the cable 11 with the gripping surfaces 25 and 26.
, and the serrated portions 27, 27 are made to bite into the outer periphery of the cable 11.

In this way, the cable 1 is
1, and then pull up the cable 11 together with the main fitting machine via a wire (not shown) or the like that is previously connected to the hanger 21b.

[Problem that the invention attempts to solve]

By the way, various cables (submarine cables) are currently laid on the ocean floor, and when such submarine cables are to be repaired or replaced, it is necessary to hoist the cables to a work boat, etc. at sea. . In this case, for example, a cable pulling mating machine is attached to the tip of the wire, the mating machine is lowered to the desired seabed, grips the cable, and then retrieves the wire from the work boat while mating the cable. One possible solution is to pull up the cable along with the machine.

However, in the case of such submarine cables, the cable's own weight is large and tidal currents act on the cable, so with conventional mating machines, there is a risk that the cable may fall off, which poses a problem when pulling up the submarine cable. It's summery.

The present invention is an attempt to solve the above-mentioned problem, and aims to provide a mating machine that has a simple configuration and can securely grip the cable by preventing it from falling off due to its own weight. shall be.

[Means for solving problems]

For this reason, the cam-type fitting machine for cable pulling of the present invention is equipped with a fitting part that fits on the outer circumference of the cable and holds the cable, and A plurality of cams are provided on the outer periphery of the cam and pivoted to face each other so as to sandwich the cable, and as the cam rotates, the cam bites into the outer periphery of the cable and grips the cable. It is characterized by the formation of tooth shapes.

[Effect]

In the above-mentioned cam type fitting machine for pulling up cables of the present invention, a cable is arranged between the cams provided in the fitting part, and the outer periphery of the cable is brought into contact with the tooth profile formed on the cam. When the main mating machine is moved relative to the cable, the cam rotates due to a reaction force based on the cable's own weight, and the tooth profile bites into the outer periphery of the cable. The above cable is securely gripped.

〔Example〕

Below, a cam-type fitting machine for cable pulling as an embodiment of the present invention will be explained with reference to the drawings.
FIG. 1 is a front view thereof, FIG. 2 is a cross-sectional view taken along the - arrow in FIG. 1, and FIG. 3 is a view taken along the arrow in FIG.

As shown in FIGS. 1 to 3, the cam-type fitting machine for cable pulling of this embodiment can also slide horizontally with respect to the vice body 1, similar to the conventional one. Equipped with slide vise 2.

A rotating shaft 3 is disposed horizontally in the vice body 1, and a female threaded portion 2a formed through the slide vise 2 is screwed into a male threaded portion 3a formed on the outer periphery of the rotating shaft 3. are doing. Further, a handle 4 is attached to one end of the rotating shaft 3, and by operating this handle 4 to rotate the rotating shaft 3, the slide vise 2 is moved in parallel in the axial direction of the rotating shaft 3. ing.

As shown in FIG. 2, a cam 5 and a cam 6 are attached to the fitting part 12 at the lower part of the vise body 1 and the slide vise 2 so as to face each other and are attached to a pin 7 so as to be able to rotate in the horizontal direction. It is pivotally mounted. Each of the cam surfaces of these cams 5 and 6 has a tooth profile that can bite into the outer periphery of the cable 11, and
A tooth profile that can mesh with the protrusion 8a of the clamp 8 is continuously provided.

The clamp 8 is attached to the vise body 1 by a pin 8b so that it can rotate horizontally like the cams 5 and 6.
and is pivotally connected to the slide vise 2, and a spring 9 is coupled to the end opposite to the protrusion 8a,
With this spring 9, the above end is connected to the cable 1.
It is biased in one direction.

Therefore, in the case of cam 6, clamp 8 is
The cam 6 is allowed to rotate only in the direction indicated by the arrow in the figure (clockwise rotation direction), and is prevented from rotating in the opposite direction.

Further, in the case of the cam 5, although not shown, a clamp 8 is provided symmetrically to the cam 6, so that the cam 5 can rotate only in the counterclockwise rotation direction shown by the arrow in FIG.

Note that a hanging hand 10 is provided protruding from the upper part of the vice main body 1.

Since the cam-type fitting machine for cable pulling as an embodiment of the present invention is constructed as described above, a wire (not shown) is connected to the hanger 10, and the cam 5 is attached in advance to a size larger than the outer diameter of the cable 11. , 6, and insert the fitting part 1 from the side of the cable 11.
2 are brought into contact.

At this time, when gripping the end of the cable 11, as shown in FIGS.
The main fitting machine is arranged so as to face in the direction opposite to the rotational direction of the cam surface No. 6.

Next, by operating the handle 4, the slide vise 2 is slid to bring the cams 5 and 6 closer together. As a result, the tooth profiles of the cam surfaces of the cams 5 and 6 are brought into contact with the outer peripheral surface of the cable 11, and the cams 5 and 6 are further bitten into the outer periphery of the cable 11 to some extent by operating the handle 4. As a result, as the main mating machine is moved, the cables 1 of the cams 5 and 6
The biting into the cable 11 becomes stronger, and the gripping force of the main fitting machine on the cable 11 increases.

That is, when the ends of the cable 11 are gripped by the cams 5 and 6, when the main fitting machine is pulled up via a wire (not shown), the cable 11 moves in the direction indicated by the arrow n in FIG. 3 due to its own weight. This makes the cams 5 and 6 more firmly bite into the cable 11 while rotating.

On the other hand, when the middle of the cable 11 is gripped by the cams 5 and 6, the cable 11 does not necessarily move in the n direction by pulling up the main mating machine, but the cable 11 is The pull-up is attempted to be resisted by the received tidal current, etc., and this drag force acts in an irregular direction, so a component in the direction shown by the arrow n in FIG. 2 may occur in this drag force. The cams 5 and 6 rotate due to the n-direction component resistance of the cable 11, and the cams 5 and 6 bite into the cable 11 more deeply, increasing the gripping force.

As described above, the cable pulling cam type fitting machine of this embodiment has a simple structure, but can grip the cable 11 more reliably by utilizing its own weight, etc. In particular, it makes it possible to pull up submarine cables underwater.

In addition, in this embodiment, when pulling up the main mating machine with the wire, the handle 4 is used to apply this pulling force.
Although we have not focused on the relationship between the point of action of Even if the middle part of the cable 11 is gripped by arranging the gripping points of the cams 5 and 6 at positions shifted in the direction, the handle 4
When the cable 11 is pulled up, the cable 11 may naturally move in the n direction, thereby increasing the gripping force more reliably.

In addition, the cam 5 and the cam 6 can be rotated only in opposite directions. For example, when the cable 11 moves in the n direction in FIG. 2, the cam 5 rotates and the cable 11 moves in the opposite direction to the n direction. Then, the cam 6 may be rotated, and in this case, the gripping force increases regardless of which direction the cable 11 moves, and it becomes possible to grip the cable more reliably.

[Effect of idea]

As described in detail above, according to the cam-type fitting machine for cable pulling of the present invention, in the fitting machine for cable pulling, the fitting part fits on the outer circumference of the cable and holds the cable. A plurality of cams are provided in the fitting portion and pivoted to face each other so as to sandwich the cable, and as the cam rotates, the cam bites into the outer periphery of the cable. With a simple configuration in which a tooth profile is formed that can grip the cable, it is possible to securely grip the cable while utilizing the cable's own weight.In particular, by using this machine for submarine cables, It is now possible to pull up.

[Brief explanation of drawings]

Figures 1 to 3 show a cam-type fitting machine for pulling up cables as an embodiment of the present invention.
The figure is a front view, FIG. 2 is a cross-sectional view taken in the direction of the - arrow in FIG. 1, FIG.
5 shows a conventional cam-type fitting machine for pulling up cables, FIG. 4 is a front view, and FIG. 5 is a cross-sectional view taken along the - arrow in FIG. 4. 1...Vise body, 2...Slide vise, 2
a... Female threaded part, 3... Rotating shaft, 3a... Male threaded part, 4... Handle, 5, 6... Cam, 7... Pin, 8... Clamp, 8a... Protrusion, 8b... Pin, 9... Spring, 10... Hanging hand, 11...
Cable, 12...Mating part.

Claims (1)

[Scope of utility model registration request] A fitting machine for pulling up a cable is provided with a fitting part that fits on the outer periphery of a cable to hold the cable, and a plurality of fitting parts are pivotally connected to face each other so that the cable can be sandwiched between the fitting parts. A cam type for pulling up a cable, characterized in that a cam is provided, and teeth are formed on the outer periphery of the cam so that the cam can bite into the outer periphery of the cable and grip the cable as the cam rotates. mating machine.