All
motors are F class insulator motor of domestic
first class manufacturer(such as Ta Tung,
Teco......etc),
single speed hoist (or dual speed fast speed
)motor, and 40% ED motor exclusive for hoist.
possess high start
torque, low start current and thermal resistance.
The
dual speed cranes are operated by high and
low speed motor separately, control the lifting
speed by using the clutch, the advantages
is one motor can continue the lifting work
in case of
one of the motor break down.
The
winch brake device is solenoid type auto adjustment
method, when the braking is worn out, the
gap can be adjusted automatically to prevent
slipping cause due to wearing.
The
brake torque value of the winch brake is 1.5
time of the max., torque value required by
rated
lifting load.
The
travel motor use disc DC solenoid brake device,
the brake torque can be adjusted form the
external
of the brake, high performance and easy maintenance.
The
steel rope is exclusive of steel rope for
crane with more than 5 times of safety factor.
The
hook is carbon steel forged, 5 times or more
in safety factor, with safety device to prevent
the loosen of the lifting steel rope.
The
gear box is lubricated by grease, save the
trouble in topping up the motor oil and no
concern
of pollution.
The
gear material SNCM220 carburizing heat treated
with more than 60HRC, the gear wheel material
S45C is high frequency surface treated, with
more than 50HRC.
Over-winding
prevention device, the crane use two stages
upper limit protection equipment, the first
stage control cut off the power supply, the
second control the cuts off power supply to
motor, possess
double protection.
