Title:
METHOD OF AUTOMATIC CONTROL OVER IMPACT RIPPER
Document Type and Number:
WIPO Patent Application WO/1991/010017
Kind Code:
A1
Abstract:
A method of automatic control over an impact ripper to be mounted on the rear part of construction machines such as a bulldozer for digging hard soil layer, which makes it possible to reduce fatigue of the operator, improve operability in controlling the posture of the ripper during operation of a breaker, and prevent breakdown of the impact ripper caused by wasteful striking. For satisfying the purpose, a tractive power and caterpillar speed required by digging resistance acting on the blade end of the impact ripper (2) are detected and signals obtained from the detection are inputted to the controller (4). When an automatic strike switch is on, acting signals are emitted from the controller (4) to the vibrating mechanism (3) of the impact ripper (2) regardless of a vehicle tractive power when a caterpillar speed is under a fixed value. On the other hand, the controller (4) emits operation signals only when a vehicle tractive power exceeds a fixed value if a caterpillar speed is higher than the fixed value.
Inventors:
MATSUMOTO NORIHISA (JP)
Application Number:
PCT/JP1990/001732
Publication Date:
July 11, 1991
Filing Date:
December 28, 1990
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
International Classes:
A01B63/112; E02F5/32; E02F9/22; (IPC1-7): E02F5/32
Foreign References:
| JPS6124731A | 1986-02-03 | |||
| JPS6331160U | 1988-02-29 | |||
| JPS6331161U | 1988-02-29 | |||
| JPS4945361Y1 | 1974-12-12 |
Download PDF:
Previous Patent: AN EXCAVATOR BUCKET
Next Patent: COMBINATION COUPLING FOR A WATER INSTALLATION SYSTEM
Next Patent: COMBINATION COUPLING FOR A WATER INSTALLATION SYSTEM