FIELD: mining industry.
SUBSTANCE: device has body with moveably cylinder and sensor placed therein, electrically connected to signal equipment. Sensor is a two-shoulder lever, made in form of axis with electric contacts at ends, mounted with possible rotation in self-mounting bearing, placed in moving cylinder isolated from body with inner electrical contact. Upper electric contact of axis is made in form of spring. Lower portion of body is made in form of truncated cone, broadening downwards, and provided with inner electric contact, isolated from body.
EFFECT: higher safety.
3 dwg
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SU296173A1 |
