Flexible coupling rod and coupler

The invention relates to a flexible coupling rod, comprising a driving part and a driven part which are connected through a transmission part, shaft holes which can be connected with a mechanical device are formed in the driving part and the driven part, the transmission part can transmit torque from the driving part to the driven part, and the transmission part is an elastic part. And the transmission part can generate elastic deformation in the transmission process, so that compensation displacement is generated. By means of the flexible coupling rod, flexible connection between mechanical equipment can be achieved, and meanwhile counter force generated during displacement of the shaft rod is reduced. 本发明涉及一种柔性联轴杆，包括：通过传动件相连接的主动件和从动件，在所述主动件和从动件上构造有能够连接机械装置的轴孔，所述传动件能够将来自主动件上的力矩传递给从动件，所述传动件构造为弹性件，使得所述传动件能够在传动过程中发生弹性形变，从而产生补偿位移。本发明的柔性联轴杆能够有实现机械设备之间的柔性连接，同时降低轴杆变位时所产生的反力。