DEVICE FOR STOPPING CAGE AT LEVEL OF RECEIVING PLATFORM OF MINE CAGE HOIST Russian patent published in 1994 - IPC

FIELD: mining equipment. SUBSTANCE: device comprises hydraulic power cylinder installed on each cage. Cylinder rod is connected to hoisting rope. Disposed under the cage bottom is an additional hydraulic power cylinder with a spring-loaded rod connected to an equalizing rope. The cage is provided with built-in extensible keeps fitted with a hydraulic drive and return springs. Each cage is provided with a control unit incorporating a three-line two-position directional valve whose channels are in hydraulic communication with working chambers of hydraulic cylinders, with hydraulic drives of keeps and with drain reservoir disposed on each cage. Said reservoir communicates with the hydraulic cylinder through a valve. EFFECT: improved functional and operating characteristics. 2 dwg