Canadian engineers have created a wearable raboroko with a powerful hydraulic system that allows the hand to move quickly in different directions. It is controlled by another person with the controller in the form of a reduced model of the device and requires for its operation the hydraulic unit that supplies a fluid under pressure. As examples, the developers showed how ramoroka may submit the necessary tools and to break through the wall of plasterboard. The article was presented at the conference ICRA 2020.
Long enough in the field of creation of electro-mechanical hands, which usually engineers have created prostheses, formed a separate area on the establishment of additional hands. While these developments are not applied in practice, but engineers are thinking about where they could be applied. Basically, they propose to use wearable raboroko in order to apply the tools and keep the design, while the person does most of the work, requiring intelligence, accurate skills and other things. Current projects wearable roborock almost always use electric motors and are often not very high power characteristics.
Engineers from the canadian Interdisciplinary Institute for technological innovation and company Exonetik under the leadership of Jean-Sebastian Planta (Jean-Sébastien Plante) has created a hydraulic arm that combines high strength and speed, as well as the ability to easily move the segments of the device hands. The hydraulic system imposes the greatest limitation: the hand requires a large hydraulic unit that provides the liquid pressure in the channels and cylinders of the hands.
The hand attaches to put on the vest and its base is located at the lumbar region of the back. It consists of three segments, connected together and the base via three nodes. Each
of them has two hydraulic cylinders, connected by lines with the shaft connecting the two segment arms. Each pair of cylinders is connected through a pipe with a hydraulic unit, which also has two main cylinder. The segments of the arms to change the angle between them due to the fact that the control cylinders in the unit can create a pressure difference in the cylinders in connection. Also at the end of the hand there is a gripper with three fingers, which is also powered by separate hydraulic cylinders.