Mining or in situ disintegration of hard material – Hard material disintegrating machines – Stepper-type advance-causing means
Patent
1986-10-15
1988-09-06
Novosad, Stephen J.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Stepper-type advance-causing means
245105, 299 43, E21C 2900
Patent
active
047688351
ABSTRACT:
The advancing system for a coal winning machine comprises a guide installed along a face conveyor, and an advancing mechanism connected with the machine. The advancing mechanism is accommodated in a separate housing and has at least two successively communicating pairs of advancing hydraulic cylinders with slides hinged to each of said cylinders. The guide is provided with rack-type engagement elements and secured to the end heads of the face conveyor. Each one of the slides has grips for holding on the guide, and a hydraulic cylinder. Each hydraulic cylinder of the slides is connected to its fixing bar the latter being installed with a provision for being arranged and fixed between the engagement elements of the guide.
REFERENCES:
patent: 3754790 (1973-08-01), Mappin et al.
patent: 3821934 (1974-07-01), Maeda
patent: 3832945 (1974-09-01), Muto et. al.
patent: 4212450 (1980-07-01), Lambert
Fedotov Eduard I.
Kalantarov Boris B.
Markov Anatoly P.
Pukis Alexandr A.
Stepanov Nikolai I.
Bagnell David J.
Gosudarstvenny Proektnokonstruktorsky I Experimentalny Institut
Novosad Stephen J.
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