Device for controlling torque output of wind turbine blades

A device for controlling torque output of wind turbine blades, comprising:

• a coaxial planetary gearbox;
• a front high speed transmission axis, said front high speed transmission axis having a front guide at one of its ends;
• a torque control device, said torque control device comprising a transmission sliding bush, a thrust flange, a torque maintaining spring, and a thrust block;
• a transmission sliding bush, said transmission sliding bush comprising a front key, a rear key, a front ring, a rear ring, and a connector;
• a rear high speed transmission axis, said rear high speed transmission axis having a rear guide at one of its ends;
• a braking system, said braking system comprising a front braking driving ring, a rear braking driving ring, a braking disk, and a disk braking calipers;
• and
• a pitch angle adjustment axis,
• wherein said coaxial planetary gearbox converts the low rotation speed and high torque input from the blades into a high rotation speed and low torque output to said front high speed transmission axis;
• wherein said front high speed transmission axis transmits the torque from said coaxial planetary gearbox to said torque control device through the connection between said front guide and said front key;
• wherein said torque control device transmits the torque from said front high speed transmission axis to said rear high speed transmission axis through the connection between said rear guide and said rear key;
• wherein said rear high speed transmission axis transmits the torque from said torque control device to a generator;
• wherein said braking system is driven by the said torque control device to stop the rotation of the blades of a wind turbine through said disk braking calipers clamps said braking disk when the wind speed is not in the rated range;
• and
• wherein said pitch angle adjustment axis transmits the pitch angle adjustment output from said torque control device to the pitch angle adjustment device.