Title:
AUTOMATIC HYDRAULIC WORKING MACHINE
Document Type and Number:
Japanese Patent JP3727793
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent wrong operation and a false move, and stop a fault diagnosis function at the time of using as a base machine and checking out an input apparatus, etc.
SOLUTION: This machine is provided with a plurality of manual reducing valves 17, 19 for operating a plurality of work bodies, an angle detector for detecting mutual angle relation of the work bodies, a control means 15 for outputting a control signal which acts the work bodies automatically along a predetermined locus of movement on the basis of angle detecting signals θ1, θ2, R, etc., a shuttle valve 18 for selecting oil pressure signals of the manual reducing valves and a signal of a high-pressure side in the oil pressure signals by the control signal, and a man selector valve operated by the selected oil pressure signals and for switching a acting direction of an actuator which acts the work bodies. In this case, an output part 154 for outputting the generated control signal and an opening and closing means 14 for controlling the supply of power for acting the output part are provided on the control means, and the output part is nullified or functions effectively according to opening and closing of the opening and closing means.
Inventors:
Yasuda Gen
Akira Hashimoto
Akira Hashimoto
Application Number:
JP35321198A
Publication Date:
December 14, 2005
Filing Date:
December 11, 1998
Export Citation:
Assignee:
Hitachi Construction Machinery Co., Ltd.
International Classes:
E02F9/24; (IPC1-7): E02F9/24
Domestic Patent References:
| JP8219117A | ||||
| JP6026072A | ||||
| JP4034134A | ||||
| JP1152830U | ||||
| JP57007787U | ||||
| JP60144433A | ||||
| JP1094129A |
Attorney, Agent or Firm:
Kenjiro Take
Kazunori Satake
Koji Shichijo
Kazunori Satake
Koji Shichijo