Use a long rod as hinge axis and stick it through both hinges.
用长杆为铰链轴，并坚持它通过两个铰链。
2
Three kinds of hingerod typed force amplification mechanism, which takes pneumatic muscle as the driver, were introduced, and the corresponding calculation formulae of force output were given out.
介绍了三种以气动肌腱为驱动的铰杆式增力机构，并给出了相应的输出力计算公式。
3
A hinge arrangement on the stay rod allows the unit to be positioned at any Angle.