Self-sensing passive mechanical integrated broken belt protection device

The utility model discloses a self-sensing passive mechanical integrated broken belt protection device. The self-sensing passive mechanical integrated broken belt protection device comprises a rack (2), an upper grab beam (6), a lower grab beam (3), a counter weight (10), a slide rail, a sliding block (5) and a force application mechanism, wherein the upper grab beam (6) is hinged to the upper portion of the rack, the lower grab beam (3) is hinged to the middle of the rack, and the slide rail is arranged on the rack and located between the two grab beams; the counter weight is connected with the lower grab beam, so that the upper grab beam tends to move upwards; the upper grab beam and the lower grab beam are connected with an upper connecting rod (7) and a lower connecting rod (9) respectively, the two connecting rods are hinged to the sliding block, and the siding block slides in the slide rail of the rack and drives the upper grab beam and the lower grab beam to turn over and clamp a broken belt; the force application mechanism is located at the left end of the sliding block, so that the sliding block tends to move rightwards. According to the self-sensing passive mechanical integrated broken belt protection device, passive control is adopted; after a conveying belt is broken, the device can automatically sense whether a belt of a belt conveyor is broken and accurately grasp the belt breaking moment, and therefore a rubber belt can not conduct faulty actions during normal running.