1. Hanging weight: 4.2kg (after the mechanical arm is installed normally, the hook can bear ≮ 4.2kg and keep stable.

Test method: fix the bottom of the manipulator, lock each joint, and connect one at the connection of the fourth soft spring and the hard rod

Spring tension meter. When the spring tension meter is pulled down perpendicular to the horizontal plane, there is no obvious change in the mechanical arm within 4.2kg tension

All joints were stable for 10 minutes.

2. The times of joint adjustment were ≮ 2500. The screw thread of joint adjusting handle can be repeatedly loosened and tightened for more than 2500 times. When the force of 10kg is applied to the damping ring inside the joint, the friction force does not decrease obviously within 2500 cycles.

3. The service life of plastic parts is more than 5 years.

4. It can be equipped with domestic and imported ventilator, pediatric CPAP respiratory pipeline and anesthesia respiratory pipeline support