WATER PRESSURE TESTING APPARATUS FOR PIPE - Kurimoto Iron Works Co., Ltd.

Title:

WATER PRESSURE TESTING APPARATUS FOR PIPE

Document Type and Number:

Japanese Patent JP3180854

Kind Code:

B2

Abstract:

PURPOSE: To enable the testing of a water pressure of a pipeline regardless of the size of a pipe or the entry of an inspector by a method wherein a freely movable wheel is driven to be moved within the pipe, positioned with a monitor camera and lighting and a jack is operated to get a rubber ring tight on an internal wall of the pipe for the formation of a closed space.
CONSTITUTION: A front base plate 1 and a rear base plate 2 are arranged in the direction of the axis of a pipe and both ends thereof are pierced with four tension bars 12 to be clamped together with a nut 13. Wheels 11 and 12 free to run are pivoted on both the base plates 1 and 2 and moved in the pipe with a drive mechanism so that a detection position is determined with a lighting 7 and a monitor camera 8 mounted on the front of the front base plate 1. Then, an oil pressure is supplied with a hydraulic pipe 16 in the tail to operate a hydraulic jack 6 so that a gradient surface 41 of a front slide cylinder 4 and a gradient surface 51 of a rear slide cylinder 5 are moved outward, causing rubber rings 3A and 3B attached to the base plates 1 and 2 to be pressed onto the internal surface of the pipe. Thus, a closed space is formed at a coupling part or the like desired to test a water pressure thereby enabling the testing of the water pressure.

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Inventors:

Tomoharu Matsuo
Yoshihiko Yamamoto
Yusuke Shibata

Application Number:

JP3272193A

Publication Date:

June 25, 2001

Filing Date:

January 27, 1993

Export Citation:

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Assignee:

Kurimoto Iron Works Co., Ltd.

International Classes:

G01M3/28; G01N3/12; (IPC1-7): G01M3/28

Domestic Patent References:

JP5430887A
JP4737480A
JP199037U

Attorney, Agent or Firm:

Junzo Aono

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