Title:
QUICK COUPLER CIRCUIT AND QUICK COUPLER ATTACHMENT/DETACHMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2018/158797
Kind Code:
A1
Abstract:
In this quick coupler circuit (20), a boosting valve (25) is switched to a boosting position (Q1) and a coupler changeover valve (27) is switched to a lock-side position (R1) when a changeover switch (28) is switched to a lock position (S1). When the changeover switch (28) is switched to a hold position (S2), the boosting valve (25) is switched to a non-boosting position (Q2) and the coupler changeover valve (27) is switched to the lock-side position (R1). When the changeover switch (28) is switched to an unlock position (S3), the boosting valve (25) is switched to the boosting position (Q1) and the coupler changeover valve (27) is switched to an unlock-side position (R2).
Inventors:
SATO KOJI (JP)
TAKIGUCHI TAKAHIDE (JP)
TAKIGUCHI TAKAHIDE (JP)
Application Number:
PCT/JP2017/007663
Publication Date:
September 07, 2018
Filing Date:
February 28, 2017
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
International Classes:
E02F3/36; E02F3/40
Foreign References:
| JP2012002034A | 2012-01-05 | |||
| JPH11181819A | 1999-07-06 | |||
| JP2012002034A | 2012-01-05 |
Other References:
See also references of EP 3546655A4
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (JP)
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