The invention provides a sitting type automatic
lumbar fixed-point
spinning reduction
machine for treating
soft tissue injuries and spinal diseases. The reduction
machine comprises a chair, a
crotch fixer, leg
holddown units, a back fixer, a movable rod, a chest-rest board, a shifting mechanism, a
forward bending mechanism, a sideward swaying mechanism, a
spinning mechanism and a related
electric control system. The shifting mechanism, the
forward bending mechanism and the sideward swaying mechanism are driven by electrohydraulic rod type pushers, control is steady, the speed is moderate, the
spinning mechanism is controlled by a
servo system cooperating with a corresponding transmission mechanism, so that the needed speed and angle of spinning are accurate, and the back fixer is provided with
artificial hand models, which are provided with buffer units and an automatic follow-up or withdrawal positioning function. The closed-
loop control system comprising related sensors and a programmable controller is communicated with a computer via the RS232
serial communication technology, and cooperates with a
computer user interface, and thereby the reduction
machine has the advantages of simple operation, high
automation degree, accurate control and remarkable
efficacy.