Control system for a multiple shank impact ripper

Details Control system for a multiple shank impact ripper Control system for a multiple shank impact ripper

1987-11-18

1989-05-30

Neuder, William P.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Floor-working

37DIG18, 172 2, 172 4, 172 7, 172 12, A01B 3500

Patent

active

048344613

ABSTRACT:
Impact rippers are useful for ripping solid rock. The service life of the impactor can be extended if the impactor is operated only when the ripper shank is loaded sufficient to transmit the impact energy into the material being ripped. The subject control system uses control signals generated by a plurality of signal generating means when the ripper shanks are loaded above a predetermined level to control the operation of the hydraulically actuated impactors associated with such ripper shanks. The number of control signals being generated is also used to control the volume of fluid made available for use by the impactors being operated at an given time to control the operating speed thereof. Thus, only the impactor(s) associated with a ripper shank(s) loaded above the predetermined level is operated thereby avoiding non-productive and harmful impactor operation if the ripper shank(s) is not sufficiently loaded.

REFERENCES:
patent: 4031964 (1977-06-01), Takahashi et al.
patent: 4044838 (1977-08-01), Wooldridge
patent: 4229044 (1980-10-01), Cobb et al.
patent: 4529039 (1985-07-01), Sakundiak
patent: 4630676 (1986-12-01), Long, Jr.

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