Safety

• Anti falling self-locking device

  The tightening device of motor output shaft (patented design of inner cone) forms a structural self-locking to ensure that the hub and output shaft are fastened without loosening

• Fall protection safety ring

  Connect the five leaf petioles with the upper cover of the motor to ensure that the leaf petioles will not separate and fall.

• Tenon and tenon type petiole connection

  Tenon and mortise connection: the "concave" section of the blade handle forms a joint bite with the "convex" section of the buffer, so as to eliminate the outward centrifugal force of the blade during the operation of the fan and the shear force during the start and stop of the fan.

• Integrated hub

  The patented integrated wheel hub is embedded with 5 special-shaped fasteners, which is self-contained and can withstand a tensile force of more than 11 tons after being tested by the authoritative department of the government.

• Anti desoldering safety module

  The L-shaped connecting device firmly connects the flange plate of the frame with its column. Even if the flange plate is disconnected from the column, the overall frame structure is firm and does not fall.

• Shock absorber

  The blade handle and blade are non rigidly connected by damping device, with special vibration isolation rubber pad to absorb the vibration generated by most of the blades when the fan is running.

• Design of streamlined variable section blade

  Applying the aerodynamic equal chord length theory, combined with the principle of relative linear velocity, the blade root to blade tip gradually narrows and thins, the force is more balanced, the air supply is more uniform, and there is no cavity in the center.

• Aviation grade anti-collision blade material

  5052 aviation aluminum plate with a thickness of 1.5mm can withstand tensile force of more than 3 tons, and the ultra-high material toughness ensures that the blade can change quickly when impacted, effectively absorb external forces, prevent blade fracture, and greatly avoid damage to the motor and other structural parts.

• High strength riveting of blade

  Each blade is riveted with 16 high-strength rivets up and down with the buffer cavity to form an independent surface. The design shear capacity of each rivet is 1.5T.

• Wire rope balance protection

  The four steel wire ropes are fixed with the building traction based on the balance principle to ensure that the fan is not shaken and dropped by external force and air flow.

• Wire rope winding protection

  The mounting plate and beam are wound with 1000kg tensile steel wire rope to ensure that the overall structure of the fan is not loose and does not fall.

• Real time monitoring and active maintenance

  Dawang intelligent remote control system can monitor the equipment operation parameters, motor temperature rise and equipment levelness in real time.