The invention discloses an anti-falling method of a dynamic
wheel load instrument. A longitudinal movement device is equipped with a control
assembly and an antenna device; the control
assembly is connected with the antenna device and a
piston; the antenna device acquires a
microwave command transmitted by an external control panel and transmits the
microwave command to the control
assembly; and the control assembly controls the stretching and retracting of a stretching and retracting part of the
piston in response to the
microwave command, so that a connecting frame and a foot support can becontrolled to run in a higher position and run in a lower position. The defects that in the prior art, the working period is shortened and the falling is easy under the condition of
excess weight areeffectively overcome.