Take-off safety diagnosis and lift force measurement device for rotorcraft

The invention belongs to the technical field of aviation ground testing, and provides a rotorcraft takeoff safety diagnosis and lift force measurement device, which comprises a main takeoff platform, a force measurement balance, a vibration acceleration sensor, an information acquisition system, a weight gravity center calculation program, a rotor dynamic balance program and a computer, the main take-off platform serves as a take-off rigid platform of the rotorcraft and is flush with a runway, a force measuring balance which is of a frame type balance structure and can measure force in the circumferential direction is fixedly connected to the lower portion of the main take-off platform, a vibration acceleration sensor is arranged on the lower surface of the main take-off platform, and strain gauges are installed on all force measuring rods of the force measuring balance. The information collection system collects data of the vibration acceleration sensor and the strain gauge and sends the data to the computer