In the traction apparatus, a control circuit has the following traction
control process portions. First, a first traction control process portion
winds up the slack portion of a wire by a motor to eliminate the slack of
the wire connected to a body to be pulled. Next, a second traction
control process portion converts a set traction force that is set by an
operation portion to a traction amount to calculate a converted value
and, by defining a predetermined amount of a traction amount set based on
the converted value as an initial target value, continuously winds up the
wire by the motor to that target value. Next, a third traction control
process portion detects the traction force that is being applied to the
body to be pulled by a load cell, calculates a drive stop time of the
motor by defining the set traction force as a final target value on the
basis of a detected output of the load cell and drives the drive
mechanism, and stops the driving of the motor at a point of reaching the
drive stop time.