Title:
OPERATION STRUCTURE FOR WORK DEVICE OF WORKING VEHICLE
Document Type and Number:
Japanese Patent JP3274305
Kind Code:
B2
Abstract:
PURPOSE: To obtain the operation structure for the work device of the working vehicle, capable of lifting a lift arm so as not to generate a starting shock and further capable of stopping and lowering the lift arm so as not to generate the rise in the temperature of an oil by forming a throttle part with a throttle hole formed in the main body of a check valve.
CONSTITUTION: An oil-discharging passage and the first oil control passage are connected to the pump side of an oil-feeding passage 13 from its check valve 12, and the second oil control passage is further connected to the cylinder side of the oil-feeding passage 13 from its check valve 12. Further, a throttle hole 11 for throttling the flow volume of a hydraulic oil fed to a lift cylinder is formed at a position placed on the upstream side of a hydraulic oil flow direction from the sheet 12d of a valve main body 12a among the poppet 12b of the check valve 12 and the valve main body 12a having the sheet 12d received and stopped on the poppet 12b.
Inventors:
Mitsuhiro Takekata
Tadashi Nakamura
Tadashi Nakamura
Application Number:
JP97095A
Publication Date:
April 15, 2002
Filing Date:
January 09, 1995
Export Citation:
Assignee:
Kubota Corporation
International Classes:
A01B63/10; F15B11/00; (IPC1-7): A01B63/10; F15B11/00
Domestic Patent References:
| JP61205403A |
Attorney, Agent or Firm:
Shuichiro Kitamura