Mining intrinsically safe speed sensor

• Main Authors: YAO CHUN, CHEN YAN, LIU XIAOMING, WANG YANPU
• Format: Patent
• Language: Chinese; English
• Published: 30.01.2013
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT; MEASURING; MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK; MINING; PHYSICS; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS; TESTING

The utility model provides a mining intrinsically safe speed sensor which is characterized by mainly comprising a speed sensor (1) and a speed control part (2). The speed sensor (1) comprises a coded disc (3), a rolling wheel (4), a frequency output circuit board (5) and a wiring box (6). The frequency output circuit board (5) and the coded disc (3) are arranged in the rolling wheel (4). A frequency signal end output by the frequency output circuit board (5) is connected with a frequency signal receiving end of the wiring box (6) through a cable. The wiring box (6) connects frequency signals to a control circuit board of the speed control part (2) through the cable. The mining intrinsically safe speed sensor is compact in structure and simple to operate. For small space of a belt machine, only two keys are operated to input a protected speed value. The mining intrinsically safe speed sensor is good in electric safety and high in reliability, passes the national institution detection, and obtains an explosion-