JPH08146264A - Striation body installation device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a novel filament-laying device capable of significantly extending the pressure-feeding distance of filaments such as optical fiber cables while having a simple operation and a simple configuration. . [Structure] An apparatus for laying a linear body in which a fluid compressed to a pressure equal to or higher than atmospheric pressure is supplied into a pipe to lay the linear body with a drive wheel and a feedhead body, wherein the drive wheel is a fluid type motor. The fluid supplied to the pipe driven by means of a separate system is different from the fluid supplied to the drive wheel. In the above configuration, it is preferable that the fluid motor is integrally formed in the feed head body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for laying a filament by a compressed fluid.

[0002]

2. Description of the Related Art In order to lay a filamentous body such as an optical fiber cable with a compressed fluid, there is an optical fiber pneumatic feeding method using an optical fiber pneumatic feeding device as shown in FIG. (See JP-A-4-131802.)
In FIG. 3, in order to lay the optical fiber cable 1 wound on the reel 3 in the pipe 2, the feed head 4 is provided at the inlet portion of the pipe, and the feed head 4 receives the highly compressed air from the compressor 5. Sent.

Referring to FIG. 4, which shows a specific example of the feed head 4, the optical fiber cable 1 passing through the guide 8 is rubbed against the hydrodynamic force of the seal portion 4d by the rotation of the drive wheel 4b. The force that overcomes the force advances into the hollow passage provided in the feedhead body 4a and is guided into the connected pipe 2. The optical fiber cable 1 advances into the pipe 2 together with the compressed air continuously supplied from the compressed air introduction port 4c. The pressure-feeding method using this type of compressed fluid is characterized in that it is possible to lay an optical fiber cable later in a previously laid pipe, if necessary, or to lay an optical fiber cable by connecting pipes with a pipe connector. There is.

In particular, when an optical fiber cable is laid along a power cable or a communication cable, the longest length of the power cable or the communication cable is as short as 300 m to 1 km due to transportation and the like. By combining a cable insertion pipe with such a cable and connecting it with a connector when laying an optical fiber cable, an optical fiber cable with a length that greatly exceeds the longest single length of a power cable or a communication cable, It can be installed if necessary. In addition, since it is possible to sequentially increase the number of fibers, it is not necessary to lay more optical fiber cables in advance than necessary, so that it is possible to reduce the initial investment and to connect the optical fibers. Since the number of fusion points is reduced, the connection loss of the optical fiber cable line can be reduced and the quality of the communication line can be improved, which is very advantageous.

Further, as seen in Japanese Utility Model Application Laid-Open No. 5-150505, it has been considered that a drive power source becomes unnecessary by using a compressed fluid sent into a pipe as a driving force for a wheel.

[0006]

As described above, the method of laying an optical fiber cable is a compression-feeding method using a compressed fluid, which is very advantageous, but it occurs between the inner surface of the pipe and the optical fiber cable during the pressure-feeding. Friction force (This is great especially when the pipe has many curved routes.)
Therefore, there was a problem that the pipe could not be laid if the pipe length became long. An optical fiber cable can be easily pumped with a normal pipe route of about 1000 m,
If there are many complicated bends or the length is 1000 m or more, the optical fiber cable cannot be pumped in the middle of the pipe.

As a solution to this, it is conceivable to provide the above-mentioned pneumatic pumping device in the middle of the pipe laying route. However, since the drive wheel is driven by an electric motor, the device interval is as long as several 100 m. It becomes difficult to synchronize with each pumping device, and due to the lack of synchronization, there is a problem in that excessive tension is applied to the optical fiber cable in the drive section, or extreme bending occurs.

Also in the apparatus disclosed in Japanese Utility Model Laid-Open No. 5-15005, it is difficult to change the rotation speed of the wheel because the supply source of the fluid supplied to the pipe is the same as that of the fluid supplied to the wheel. Therefore, stable pumping of the optical fiber is impossible. (When the amount of fluid is changed, it is affected by the fluid force inside the wheel and the pipe.) The present invention has a simple operation and a simple structure, but an optical fiber in order to solve the above-mentioned problems of the prior art. It is an object of the present invention to provide a novel filament laying device capable of significantly extending the pressure-feeding distance of filaments such as cables.

[0009]

The apparatus for laying a filament provided by the present invention (first invention) supplies a fluid into a pipe to lay the filament with a drive wheel and a feedhead body. In the strip laying device, the drive wheel is driven by a fluid type motor, and the fluid supplied into the pipe is a separate system from the fluid supplied to the drive wheel. In the above configuration, the fluid motor may be integrally formed in the feed head body.

Further, the apparatus for laying a linear body (second invention) provided by the present invention is to lay a linear body by supplying a fluid into a pipe to lay the linear body with a drive wheel and a feedhead body. In the device, the drive wheel is driven by a fluid type motor, fluid is supplied from the same supply source to the pipe and to the drive wheel, and a fluid adjusting device is provided in at least one of the fluid supply paths. And

The above-mentioned "fluid" includes air as a typical one, but the term "fluid" is used to mean a liquid or other so-called fluid without being limited to it.

[0012]

According to the wire laying device (first invention and / or second invention) provided by the present invention, the drive wheel is
By being driven by the fluid motor, the driving force to the optical fiber cable is provided by hydrodynamic force separately from the feed head body, so that control is easy and the driving force to the optical fiber is increased to increase the pressure feeding distance. Can be extended. Further, when the optical fiber cable is pressure-fed while pulsating the pressure of the compressed fluid, the hydrodynamic forces of the drive wheel and the feed head are synchronized and can be efficiently pressure-fed. In a pipe route with many bends or a tight pipe route with a high height difference, it is difficult to pump the optical fiber cable because it may force the optical fiber cable to be fed simply by turning the drive wheel with the force of the fluid. When it feels (for example, the optical fiber cable has a spiral shape in the pipe), stable pumping can be performed by controlling the fluid supplied to the drive wheel.

[0013]

1 (A) and 1 (B) show a preferred embodiment of the filament laying apparatus (first invention) provided by the present invention. In this embodiment, the feed head body 4a
The pneumatic motor 6 is connected and arranged to the drive wheel 4b arranged immediately behind. Reference numeral 6a denotes a compressed air inlet for the pneumatic motor, and by applying a predetermined air pressure from here, the drive wheel 6 is rotationally driven, and the optical fiber cable 1 passing between the wheels is sent to the feedhead body 4ah. . At the same time, compressed air was introduced into the feed head body 4a through the compressed air introduction port 4c, a hydrodynamic force was applied, and the optical fiber cable 1 could be pumped into the pipe 2.

FIG. 2 shows a preferred embodiment of the filament laying apparatus (second invention) provided by the present invention. In this embodiment, the pipe 2 for laying (introducing) the optical fiber cable 1 has a long length, and the pressure feeding devices are arranged at appropriate intervals. The air from the compressor 5 is supplied into the pipe 2 through the feedhead body 4a, and is sent to the pneumatic motor 6 through the air pressure adjusting device 7 that adjusts the pressure and flow rate of gas to rotate the motor. The optical fiber cable was sent out by the drive wheel linked with. Since the hydrodynamic force of the feed head also acts at the same time, the optical fiber cable can be efficiently pumped. 200 when the winding diameter is 1000 mm
In order to pump the optical fiber into the 0 m pipe, the pumping speed must also be adjusted.
It was made possible to perform stable pumping by using.

In the above embodiments, the drive wheel and the feed head main body are separated from each other, but it is also possible to incorporate the pneumatic motor and the drive wheel in the feed head main body. A compact and lightweight pneumatic pumping device capable of pumping intermediate pressure can be obtained.

[0016]

According to the apparatus for laying a filamentous body (first invention and / or second invention) of the present invention as described above, an optical fiber cable or the like can be used even with a simple operation and a simple structure. It is possible to greatly extend the pressure feeding distance of the striatum,
The intended purpose of providing a novel filament laying apparatus can be sufficiently achieved, and the following effects can be expected. The force that pumps the optical fiber cable is determined by the fluid motor for the drive wheel and the fluid pressure on the feed head body, and both can be operated in a synchronized state, so the optical fiber cable can be pumped smoothly. It is possible. The fluid pressure-feeding means can be composed of only fluid (air), which enables a compact design. In addition, a power supply is unnecessary. Since the fluid in the pipe and the fluid for rotating the drive wheel can be independently controlled, stable pumping work can be realized in any pipe laying route.

[Brief description of drawings]

FIG. 1 is a device for laying a linear member according to the present invention (first invention).
An example is shown, (a) is a front explanatory view, and (b) is a plan explanatory view.

FIG. 2 is a device for laying a linear member according to the present invention (second invention).
Front explanatory drawing which shows one Example.

FIG. 3 is a front explanatory view showing an example of a conventional filament laying device.

FIG. 4 is a front explanatory view showing another example of a conventional filament laying device.

[Explanation of symbols]

 1 Optical Fiber Cable (Linear Body) 2 Pipe 4a Feed Head Body 4b Drive Wheel 4c Compressed Air Inlet 5 Compressor 6 Pneumatic Motor 7 Air Pressure Adjustment Device

Claims (3)

[Claims] 1. An apparatus for laying a linear body, in which a fluid is supplied into a pipe to lay the linear body with a drive wheel and a feedhead body, wherein the drive wheel is driven by a fluid type motor to be introduced into the pipe. An apparatus for laying a filament, wherein the fluid supplied is a system separate from the fluid supplied to the drive wheel. 2. The apparatus for laying a linear member according to claim 1, wherein the fluid type motor is integrally formed in the feed head body. 3. An apparatus for laying a linear body in which a fluid is supplied into a pipe to lay the linear body with a drive wheel and a feedhead body, wherein the drive wheel is driven by a fluid type motor, and the same supply source is used. Fluid is supplied to the drive wheel from the pipe, and a fluid adjustment device is provided in at least one of the fluid supply paths.