Five-degree-of-freedom hybrid robot with rotational supports

A five-degree-of-freedom hybrid robot with rotational supports comprises a two degree-of-freedom wrist and a moving platform with a tail end in series connection to the wrist, and a first length adjustment device, a second length adjustment device, a third length adjustment device and a fourth length adjustment device, wherein

• a first rotational support and a second rotational support are further provided;
• a first fixed shaft seat is connected to each of two ends of the first rotational support through a revolute hinge, respectively;
• a second fixed shaft seat is connected to each of two ends of the second rotational support through a revolute hinge, respectively;
• one end of the first length adjustment device runs through middle portion of the first rotational support, and the other end is fixedly connected to the moving platform;
• one end of each of the second length adjustment device and the third length adjustment device runs through the first rotational support, and the other end is connected to the moving platform through a second hinge and a third hinge, respectively;
• the second length adjustment device and the third length adjustment device are symmetrically arranged on two sides of the first length adjustment device;
• middle portions of all the first length adjustment device, the second length adjustment device and the third length adjustment device are connected to the first rotational support through revolute hinges, respectively;
• and
• one end of the fourth length adjustment device runs through the second rotational support and the other end is connected to the moving platform through a fourth hinge, and middle portion of the fourth length adjustment device is connected to the second rotational support through a revolute hinge.