Title:
CONSTRUCTION MACHINE
Document Type and Number:
Japanese Patent JP2022029022
Kind Code:
A
Abstract:
To provide a construction machine which controls two actuators by one direction switching valve and achieves both operability and responsibility.SOLUTION: A construction machine includes: flow channel switching means which is in the middle of a flow channel connecting a direction switching valve for controlling an actuator and the actuator and freely switches the flow channel communicating with the direction switching valve between a first state of making the flow channel communicate with the actuator and a second state of making the flow channel communicate with another actuator; flow channel holding means 650 for holding the second state during activation, and holding the first state at the time of stopping; first operation means 318 and 319 for operating the actuator; and second operation means 316 and 317 for operating the other actuator. The construction machine includes first control means 700 for activating the holding means while the second operation means 316 and 317 are operated, and second control means 710 for activating the flow channel holding means for specified time when the operation of the second operation means is stopped, and then stopping the flow channel holding means.SELECTED DRAWING: Figure 5
Inventors:
MATSUISHI KOTARO
Application Number:
JP2020132116A
Publication Date:
February 17, 2022
Filing Date:
August 04, 2020
Export Citation:
Assignee:
YANMAR HOLDINGS CO LTD
International Classes:
E02F3/85; E02F9/22
Domestic Patent References:
| JPH11280118A | 1999-10-12 | |||
| JP2010216208A | 2010-09-30 | |||
| JP2002133987A | 2002-05-10 | |||
| JPH06278797A | 1994-10-04 | |||
| JP2005207195A | 2005-08-04 | |||
| JP2010126932A | 2010-06-10 |