42m Free Height Flat Top Tower Crane

Zhejiang Construction Engineering Machinery Co., Ltd. is one of the most reliable manufacturers and suppliers of 42m free height flat top tower crane in China. With abundant experience, we warmly welcome you to buy advanced 42m free height flat top tower crane made in China here from our factory. Good service and quality products are available.

ZJCM insists on taking technological innovation as the primary driving force for the development of the enterprise, branding as an important competitive advantage, and cultural cultivation as an important soft power. This tower crane max capacity is 10 tons, jib length is 60m, tip load is 1.8t.

Weight: the weight of underground section without load and ballast with longest jib and maximum free-standing height.

(1) Zero position protection

When the tower crane starts working, place all operating handles in the zero position, turn the main start button, the main contactor is engaged, and the tower crane each mechanism can only be started, which can prevent accidental operation of the tower crane.

 

(2) Automatic air switch

A main air switch is installed in the power supply circuit of the winch, rotary, and trolley traction mechanisms.

 

(3) Overcurrent protection

In the rotary power supply line, there is an overheat relay for the rotary mechanism used as overload protection for the rotary motor.

(4) Circuit breaker protection

Small circuit breakers are installed as short circuit protection in various control circuits and lighting circuits.

(5) Power indicator device

There is a three-phase power indicator light in the driver's cab, and a main circuit power indicator light on the control panel. The voltage on the rotating control panel is commutating. The switch can operate if the three-phase voltage is within the range of 380V (+5% to -5%).

(6) Hook height limit (if the lifting height is the same but the magnification is different, the height limiter should be readjusted)

There is a height limiter installed next to the lifting drum. When the hook rises to 3 meters away from the lifting arm, the corresponding travel switch acts and rolls the hoist is running at a slow speed; When the hook continues to rise to the height limit position, another set of travel switches will act to cut off the winch running in the lifting direction, starting again can only lower the hook; When the hook descends to 0.5 meters above the ground, the corresponding travel switch acts, Cut off the operation of the winch in the descending direction, and then start it again, only the lifting hook can be raised.

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