Title:
【発明の名称】ケーブルをケーブルガイドチューブに導くための方法およびその装置
Document Type and Number:
Japanese Patent JP2840840
Kind Code:
B2
Abstract:
Apparatus for installing cables with a certain stiffness, more in particular glass fibre cables, into a duct (6, 24) of a channelization system, using the working of a compressed gas, which apparatus is adapted to exert pushing forces on a cable (26) being introduced in order to support the compressed gas working on the cable in the duct. The apparatus comprises cable advancing means and gas inserting means. The cable advancing means include a hollow, substantially rectilinear cable lead-through channel (3) with an entrance end (4) and an exit end (5), at least one pair of wheels (8, 10; 9, 11) mounted opposite to each other for moving on a cable (26) disposed between these wheels into the direction of the outlet end (21) of the duct (6), and a pneumatic motor (15) coupled to at least one of said wheels for providing a driving couple to it. At least one of the wheels is coupled to a pneumatic piston/cylinder combination (13, 14), in such a way that when compressed gas is supplied to the pneumatic cylinder (14), transverse forces will be exerted on the cable (26) disposed between the wheels (8, 10; 9, 11). The gas inserting means include a gas channel (7), which debouches into the cable lead-through channel (3) and which is adapted for inserting compressed gas into the lead-through channel (3) between the wheels and the exit end (5) of the lead-through channel (3). The motor (15) is capable of providing a driving couple, which is larger than the driving couple, which has to act on the cable (26) to compensate a pressure difference existing at the inlet end of the duct between the pressure inside and the pressure outside the cable lead-through channel (3) as a consequence of inserting the compressed gas via the gas channel (7) into the cable lead-through channel (3). The pushing forces are exerted by the wheels on the cable (26) as a consequence of the cooperative effect of the driving couple and the transverse forces. The gas channel (7), the pneumatic motor (15) and the piston/cylinder combination may be coupled to the same compressor. For use in a tandem arrangement the apparatus comprises further a coupling unit (18) to be coupled to an outlet end (21) of a preceding duct section (24), and which includes a mainly hollow housing (19), an outlet pipe (23) for diverting a flow of gas, which may leave the outlet end (21) of the duct section (24), and an outlet opening (22) through which a cable may be led into the direction of the entrance end (4) of the cable lead-through channel (3). Advantages: the exerted transverse forces are very acurately adjustable and substantially constant; the apparatus is non-destructive to the cable when cable introduction is slowing down or stagnates; in a tandem arrangement the apparatus needs hardly any human interference and is safe for the operating staff.
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Inventors:
UIRIAMU GURIFUIOOEN
KOONERISU RINDERUTO DE JON
KOONERISU RINDERUTO DE JON
Application Number:
JP10442788A
Publication Date:
December 24, 1998
Filing Date:
April 28, 1988
Export Citation:
Assignee:
ORANDA
International Classes:
G02B6/46; G02B6/44; G02B6/50; H02G1/08; H02G; (IPC1-7): G02B6/46; H02G1/08
Domestic Patent References:
| JP59104607A | ||||
| JP60244904A | ||||
| JP60181123U |
Attorney, Agent or Firm:
Takehiko Saito