Title:
DEPRESSURIZING PLUG AND HYDRAULIC PIPE DEPRESSURIZING METHOD USING SAME
Document Type and Number:
WIPO Patent Application WO/2022/230421
Kind Code:
A1
Abstract:
Provided is a depressurizing plug (20) which is connected to a coupler (14) of a hydraulic pipe (10), and enables the depressurization of the hydraulic pipe (10). The depressurizing plug (20) comprises a pipe connecting member (21) which is connected to the coupler (14) in a connection direction, and a poppet pressing member (28) which presses a poppet (16) of the coupler (14). The poppet pressing member (28) can press the poppet (16) by means of relative displacement with respect to the pipe connecting member (21) in the connection direction. The poppet pressing member (28) has primary communicating holes (23a, 24a, 25, 27a, 27b) and an auxiliary communicating hole (23b) formed therein and, in a state in which the poppet pressing member (28) is pressing the poppet (16), hydraulic oil in the hydraulic pipe (10) is permitted to be released in the connection direction by passing through the primary communicating holes (23a, 24a, 25, 27a, 27b) and the auxiliary communicating hole (23b).
Inventors:
NAKATANI MITSUO
TAGUCHI HIROKO
TAGUCHI HIROKO
Application Number:
PCT/JP2022/012006
Publication Date:
November 03, 2022
Filing Date:
March 16, 2022
Export Citation:
Assignee:
KOBELCO CONSTR MACH CO LTD (JP)
International Classes:
F16K24/00; F16L37/38; F16L55/00; F16L55/07
Foreign References:
| JPS6032475Y2 | 1985-09-27 | |||
| JPS53125325U | 1978-10-05 |
Attorney, Agent or Firm:
KOTANI, Masataka et al. (JP)
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