| 摘要 |
The present invention relates to a mechanical device for reducing the energy absorbed by an electric motor of a hoisting plant. The device according to the invention comprises at least one first rotating member moved by the motor of the hoisting plant. The device also comprises a second rotating member connected to the first member through first transmission means. At least one third rotating member is connected to the second rotating member through second transmission means with flexible elements, which develop a transmission ratio equal to unity. The device further comprises a fourth rotating member operatively connected to the rotor of the electric motor. The fourth rotating member and the third rotating member are connected through third flexible-element-transmission means, which develop a transmission ratio equal to unity. The transmission means of the device according to the present invention are designed to enable rotation of said fourth rotating member in a direction of rotation concordant with that of said first rotating member. |
