Large-torque in-situ calibration method for armored vehicle transmission device test bed

The invention relates to a large-torque in-situ calibration method for an armored vehicle transmission device test bed, and the method comprises the steps: firstly, placing a large-torque power outputsystem at a position, where a test piece is installed, of the test bed, then, installing a standard torque sensor, and enabling a lossless connection braking device to be disposed at the other end ofa transmission shaft for enclasping and braking of the transmission shaft; and when the large-torque power output system loads torque, reading numerical values of a standard torque sensor and a measured sensor on the transmission shaft, and carrying out comparison to judge whether the measured sensor is out of tolerance or not. According to the invention, in-situ calibration of the large torque of the test bed is realized under the condition that the system firmness is not changed and the use conditions are consistent, and the problem of in-situ calibration of the large torque of the test bedof the armored vehicle tra