Implements or apparatus for applying pushing or pulling force – Method or apparatus for placement of conductive wire – By fluid pressure differential in conduit
Patent
1995-09-26
1997-07-08
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Method or apparatus for placement of conductive wire
By fluid pressure differential in conduit
2541343FT, B65H 5900
Patent
active
056452683
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an apparatus for laying a material to be laid such as a cable outside a pipe along the pipe, for transporting an object at a place where an inflammable substance such as an organic solvent and the like is treated and an electric motor cannot be used. More in detail, it relates to a laying or transporting apparatus of a cable or an object connected to a moving body by propelling the moving body in the pipe by means of a compressed air or a pulling wire.
BACKGROUND ART
Up to now, a cable etc. is entered into a laid pipe, and a compressed air or a bamboo is passed therethrough, so that the cable is laid in the pipe, However, according to this laying method, not only the cable etc. cannot be laid outside the pipe, but also a heavy cable such as a power electric wire and a control wire cannot be laid between the electric room in the construction and the electric equipments on the site. Up to now, in a case where such a heavy cable is said, a number of operators are distributed previously between the electric room and the electric equipments then the cable is transferred by the hands of the operators.
In the concrete, the operators are distributed every about 20 meters, then the first operator pulls the cable while taking a cable head on a leading end of the cable wound around a cable drum and transfers the cable head to the next operator which is distributed about 20 meters away, and the next operator pulls the cable while taking the cable head in the same way, and transfers it to further next operator. After the cable head passes through the laying place and the cable has been finished to be pulled to the destination, the cable is transferred to a predetermined position of racks and the like by the hands of all of the operators in time to the shout of the leader of the operators.
Therefore, a conventional laying operation requires a number of persons, also requires a long time of operation. In case where the laying operation is carried out at an elevated spot, a foothold is established, and then the operators must move on footing boards from a starting point to a terminal point of the cable, so that there are problems that the efficiency of the laying operation is poor, and that it is dangerous. Particularly, in a case where the object is laid on a complicated route which is bent up and down, right and left, there are many cases that not only the cable but also the equipments in the vicinity of the route are damaged.
It is, therefore, an object of the present invention to provide a laying or transporting apparatus in which a smaller number of persons are needed for the laying or transporting operation, and the laying or transporting time can be reduced compared with that in the prior art apparatus.
It is an another object of the present invention to provide a laying or transporting apparatus which can execute the laying or transporting operation efficiently and safely even on the elevated spot and the complicated place or course.
DISCLOSURE OF THE INVENTION
A construction of the present invention for attaining the above mentioned object will be described hereinafter.
As shown in FIGS. 1 and 8, a laying or transporting apparatus which utilizes a compressed air, according to the present invention, comprises a pipe 9 having a slit 6 along a longitudinal direction thereof throughout a full length thereof, a moving body 23 inserted into the pipe 9 and being movable in the pipe 9 by means of a compressed air fed into the pipe 9, and a connection member 1 connected to the moving body 23 in the pipe 9 at a base end thereof, passing through the slit 6 and positioned outside the pipe 9 at a leading end thereof to which a material 15 to be laid (FIG. 8) such as a cable or an object is connected.
Moreover, it is preferable that a sealing wire rod 8 which can block the slit 6 is arranged in the pipe 9 throughout the full length of the pipe, and a guide groove 7 for guiding the sealing wire rod 8 so as to block the slit 6 at the time of movement of the moving body is d
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Lynch Thomas W.
Watson Robert C.
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