Fluid mechanical drive device

Abstract

Abstract PURPOSE:To prevent the leakage of a fluid transferred by a hydraulic machine by a method wherein a flexible diaphragm is provided in a side passage through which a space within the hydraulic machine and a drive section comprising a rotary shaft with sealing means are connected to each other, so that the space within the hydraulic machine is separated from a space within the sealing means. CONSTITUTION:The hydraulic machine 1 is connected to a motor 4 through the rotary shaft 3 provided with the sealing means 2, the space 6 within the sealing means 2 communicating with the space 5 within the hydraulic machine is connected to a vessel 8 provided with the flexible diaphragm 7 through the side passage 9 and a space 10 within the motor 4 is connected to the vessel 8 through a side passage 11. With the above structure, the fluids in the above mentioned spaces tend to flow into the side passages 9 and 11 so as to balance the pressure in the space 5 with that in the space 6 by moving the flexible diaphragm 7, rather than they flow through the sealing means 2 so that the fluids in both of the spaces 6 and 5 do not mix into each other.

Inventors

• 👤 Kazuo Nakatani
• 👤 和生 中谷
• 👤 Hideaki Masuda
• 👤 秀昭 増田

Bibliographic Details