TESTING CONTROLLING DEVICE TO CONTROL STRESSED-DEFORMED STATE OF CONTINUOUS BEAM Russian patent published in 1998 - IPC

FIELD: systems controlling structures. SUBSTANCE: device includes actuating mechanisms for lateral displacement of its supports with reference to axis of beam, limit switches-deformation transducers mounted in test points of multispan continuous beam and signal processing unit. Limit switches are coupled through signal processing unit to actuating mechanisms. Signal processing unit incorporates first limit switch connected to first relay, second limit switch is connected in parallel with first contact of second relay and via second contact of first relay is connected to second relay, third limit switch is connected to third relay, fourth limit is placed in parallel to third contact of fourth relay and via fourth contact of third relay is connected to fourth relay, fifth contact of first relay and sixth contact of third relay are connected to first indicator lamp of warning unit, seventh and eighth contacts of second relay and fourth relay are correspondingly connected to second indicator lamp of warning unit, ninth, tenth, eleventh and twelfth contacts of first, second, third, fourth relays are correspondingly connected to third indicator lamp. Motor of actuating mechanisms is connected to DC source by fourteenth and fifteenth contacts of fourth relay and by thirteenth and sixteenth contacts of second relay. First, second, third, fourth limit switches, fifth, seventh, ninth, thirteenth and fifteenth contacts are connected to positive pole and first, second, third, fourth relays and first, second, third indicator lamps of warning unit, fourteenth and sixteenth contacts are connected to negative pole of DC source. EFFECT: enhanced operational reliability and improved characteristics. 2 dwg