Traction apparatus and rope take-up mechanism of traction apparatus

A traction apparatus that impresses a desired traction force to a body to be pulled, the traction apparatus comprising:

• a traction mechanism that includes a harness coupled to the body to be pulled, a rope having a first end attached to the harness, and a take-up drum attached to a second end of the rope and impressing the traction force on the body to be pulled by taking up the rope;
• a first pulley that engages, at a predetermined wrapping angle, the rope to which the traction force is impressed by being taken up by the take-up drum, a rope load being impressed to the first pulley from the rope;
• a coupling plate that rotatably holds the first pulley, the rope load being impressed to the coupling plate from the first pulley;
• a load sensor plate that holds the coupling plate at a first end portion thereof, the rope load being impressed to the load sensor from the coupling plate;
• an outer frame that fixes a second end portion of the load sensor plate;
• and
• a load cell adhered to a surface of the load sensor plate.

A rope take-up mechanism of a traction apparatus impressing a desired traction force on a body to be pulled by a harness coupled to the body to be pulled and a rope having a first end of the rope attached to the harness, the rope take-up mechanism comprising:

• a take-up drum that attaches to a second end of the rope and that impresses the traction force on the body to be pulled by taking up the rope;
• a first pulley that engages, at a predetermined wrapping angle, the rope to which the traction force is impressed by being taken up by the take-up drum, and on which a rope load is impressed from the rope;
• a second pulley that engages the rope closer to the harness than the first pulley;
• and
• a load sensor mechanism that includes:
• a coupling plate rotatably holding the first pulley, the rope load being impressed to the coupling plate from the first pulley;
• a load sensor plate holding the coupling plate at a first end portion thereof, the rope load being impressed to the load sensor plate from the coupling plate;
• an outer frame fixing a second end portion of the load sensor plate;
• and a load cell adhered to a surface of the load sensor plate.