Embedded scraper rotation angle detection device for scraper conveyor and detection method

An embedded scraper rotation angle detection device for a scraper conveyor, wherein the embedded scraper rotation angle detection device for the scraper conveyor comprises extensible detection devices (3), signal detection units (5) and a remote processing unit (6), the extensible detection devices (3) are connected with the signal detection units (5) through connecting cables (4), and two extensible detection devices (3) and two signal detection units (5) are respectively disposed at two ends of a scraper (1);

• each of the extensible detection devices (3) comprises an outer cylinder (31), a guide ring I (32), a mandrel (33), a measuring end (34), a supporting ring (36), a guide ring II (37), a direction finding device (38), a measuring slip ring (39), a measuring probe (311) and a bottom cover (314);
• a connecting thread is disposed on an outer surface of each of the outer cylinders (31), one end of each of the outer cylinders (31) is fixed to the bottom cover (314), the other end of each of the outer cylinders (31) is fixed to the guide ring I (32), each of the supporting rings (36) is fixed on an inner wall of the outer cylinder (31), each of the guide rings II (37) is fixed in the supporting ring (36), each of the mandrels (33) sequentially penetrates through the guide ring I (32) and the guide ring II (37), one end of each of the mandrels (33) located on an outer side of the outer cylinder (31) is in threaded connection with the measuring end (34), a ball (35) is disposed between one end of each of the mandrels (33) located on the outer side of the outer cylinder (31) and the measuring end (34), one end of each of the mandrels (33) located on an inner side of the outer cylinder (31) is fixedly connected with a connecting plate (310), guide rods (312) are vertically fixed on each of the connecting plates (310), pre-tightening springs (313) are disposed on the guide rods (312) in a penetrating mode, and two ends of each of the pre-tightening springs (313) make contact with the connecting plate (310) and the bottom cover (314) respectively;
• each of the measuring slip rings (39) is fixed to the inner wall of the outer cylinder (31), the measuring slip rings (39) take polyimide or polyester films as a base material, conductive copper wires uniformly distributed at intervals and communicating with each other are disposed on surfaces of the measuring slip rings (39), each of the measuring probes (311) is disposed at one end of the connecting plate (310), and the measuring probes (311) make contact with surfaces of the conductive copper wires disposed on the measuring slip rings (39);
• and each of the direction finding device (38) comprises a guide ring III (381), a follow-up ring (382), a left polar plate (383), a right polar plate (384) and a direction finding polar plate (385), the guide rings III (381) are installed on the mandrels (33) in a sleeving mode and fixedly connected with the follow-up rings (382), the left polar plates (383) and the right polar plates (384) are fixed to outer sides of the follow-up rings (382) and spaced by a certain distance, front ends of the direction finding polar plates (385) are located between the left polar plates (383) and the right polar plates (384), and tail ends of the direction finding polar plates (385) are fixed in threaded holes in wall thickness directions of the outer cylinders (31);
• and
• each of the signal detection units (5) comprises a signal detection module and a wireless transmission module, the remote processing unit (6) comprises a wireless receiving module and a signal display processing module, the signal detection modules are connected with input ends of the wireless transmission modules, output ends of the wireless transmission modules are connected with an input end of the wireless receiving module, and an output end of the wireless receiving module is connected with the signal display processing module.