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Patent Searching and Data


Title:
DEVICE FOR PRESS SHUTTING OFF PLASTIC PIPE
Document Type and Number:
Japanese Patent JPH081527
Kind Code:
A
Abstract:

PURPOSE: To facilitate operations for press shutting off an embedded plastic pie by providing a booster driving part provide on the side of a gate-shaped frame, a holding plate for pressing the outer surface of a plastic pipe and an operating rod extending upward for operating the gate-shaped frame.

CONSTITUTION: A hole for receiving a press shutting-off device to an embedded plastic pipe 37 is excavated from the ground surface. Next, a gate-shaped frame 30 with an operating rod 51 is lowered from the ground surface into the hole so that front and rear locating blocks 44 is adapted to abut against the upper surface of the plastic pipe 37 and mounted thereon. Under such a condition, a hydraulic pump of the ground is operated to make oil pressure act on hydraulic cylinders 34, 35, drive pistons 36, 36 of hydraulic cylinders, move left and right holding plates 38 to the central side and press shut off the plastic pipe 37 supported by a located block 44 with the left and right holding plates 38, 38. Thus, the attaching operation of the plastic pipe to press shutting-off device is simplified and a fluid shutting-off operation can be facilitated to embedded pipings with the minimum limit of excavated holes.


Inventors:
TSUTSUMI CHIAKI
TSUKAMOTO YASUO
MIYAZAKI KAZUYUKI
Application Number:
JP1994000142769
Publication Date:
January 09, 1996
Filing Date:
June 24, 1994
Export Citation:
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Assignee:
TOHO GAS KK
HITACHI METALS LTD
International Classes:
B25B1/18; F16K7/04; (IPC1-7): B25B1/18; F16K7/04
Attorney, Agent or Firm:
大場 充