Monitoring apparatus and method for dynamic contact state of multi-layer wound wire rope and drum in ultra-deep well

摘要

A monitoring apparatus and method for dynamic contact state of a multi-layer wound wire rope and a drum in an ultra-deep well, the monitoring apparatus comprising a support system, a winding system, a dynamic loading monitoring system, and a stress monitoring system. The winding system comprises an electric motor (10), the electric motor being connected with a main shaft (18) through a speed reducer (12), the main shaft (18) having a flange plate arranged thereon, the flange plate fixed with a double-fold-line drum (16) being sleeved on the main shaft (18), friction discs (15, 17) being fixed at two sides of the double-fold-line drum (16), disc brakes (2, 3, 20, 21) being fixed at one side of the friction discs (15, 17), and at least two layers of a wire rope (4) being wound on a rope groove of the double-fold-line drum (16); the dynamic loading monitoring system comprises a servo electric cylinder (8), a threaded rod of the servo electric cylinder (8) being connected with a wire rope clamp (6) via a S-shaped tension sensor (7), and one end of the wire rope (4) passing through the wire rope clamp (6) and being locked; and the rope groove and a baffle of the double-fold-line drum (16) are provided with U-shaped through grooves (22, 24, 26, 28, 30, 32, 34), strain gages (23, 25, 27, 29, 31, 33, 35) being adhered on inner walls of the U-shaped through grooves (22, 24, 26, 28, 30, 32, 34). The apparatus can monitor the dynamic contact stress of a wire rope on the surface of the double-fold-line drum and on the baffle of the drum in real time.