Commercial vehicle cab impact test equipment and test method thereof

The invention relates to commercial vehicle cab impact test equipment and a test method thereof, and the equipment comprises a main body truss which is provided with a swing arm suspension cross beam for suspending a swing arm assembly, and a swing arm moving mechanism for adjusting the swing arm suspension cross beam to move in the vertical direction and the horizontal direction; the swing arm assembly comprises an auxiliary swing arm and a main swing arm, the top of the auxiliary swing arm is rotationally connected with the swing arm suspension beam, the top of the main swing arm is connected with the swing arm suspension beam, and the bottom of the main swing arm is detachably connected with an impactor; the locking and releasing mechanism comprises a main safety lock which is fixed on the auxiliary swing arm and is in lock catch connection with the main swing arm, and an auxiliary safety lock which is fixed on the auxiliary swing arm and is in lock catch connection with the main safety lock; and the pulli