Home  >  Construction Machinery  >  Engineering & Construction Machinery  >  Cranes  >  Tower Cranes

QTZ series tower crane is a kind of upper-slewing fixed type tower crane. It can be used into every kind of industrial and civil - details see: https://www.machineto.com/new-competitive-topless-tower-crane-pqtz50-4810-10103743

New Competitive Topless Tower Crane (PQTZ50 4810)
QTZ50P(4810) topless tower crane is the smallest flattop tower crane that we can produce, easy installing and dismantling mast section use angle steel 160*160*14, size of mast is 1.6*1.6*2.5m.

Detailed Product Description of PQTZ tower crane---:
Superior product qualit
International up-to-date technique for design of tower crane
Well-looking appearance
Reasonable price
High-quality after-sales service
Tower crane--"Using technology of frequency modulation"
Frequency modulation Tower-Crane is the result of applying digital on traditional tower crane technology. This has caught up advanced standard on the world. Frequency modulation tower crane was popularly used on all high building in Vietnam, China, Brunei, Singapore, Canada and so on.
Connected system of tower crane is controlled by frequency equipment. Gear-box are imported with stable and durable operation, minimum troubles of operation. All signals are sent to microprocessor, this microprocessor will control signals and logic process. And all structures are controlled automatically. Errors are forecasted automatically. Condition of operation is controlled by microprocessor equipment without switch. Control cabin is designed by special insulating glass for convenient space of cabin, wide scope of observing for operator.

Tower crane--Trolley
Flexibly and solidly moving speed;
Installed motor with special frequency control;
Installed speed reduction device to maintain freely;
Automatically showing troubles in operating;
Hardly appear troubles at operating time;
Never appear suddenly over-speed.
Tower crane--Hoisting System
Solidly operation speed;
Installed motor with special frequency control;
Installed slewing-speed reduction device;
Equipped Control-speed device of lifting hook with exactly position limiter at space;

Tower crane--Automatically showing troubles in operation;
On stopping operation at neutral speed, tower crane is installed with unload prevent vibrating system that restrict machine's wear;
Automatically showing over-speed troubles in operation;
Lifting speed can be up to 180m/min, under 2500kg loading capacity.
Tower crane--Space cabin
Installed according to structure "humanization", operator can observe overview;
Installed air-condition (in option);
Installed system of electrical display (equipped crystal parameter show speed and amplitude frequency).
Pneumatically operator's chair.
Tower crane--Slewing System
Stably and safety operation in load as well as unload-Operation;
Installed special motor for controlling frequency;
Installed slewing-speed brake;
Controlled moment according to main and auxiliary constant of position limiter;
Hardly appear troubles in operation;
Automatically showing troubles (If appear at operation);
Automatically spilling through oil lubricating system as cycle.
Tower crane--Connection system and Tower Section
The combination between tower crane and other structures is connected by high degree steel pin-rod and bolt system. Therefore, conveniently in installation and dismantlement, heavy on load pressure.
Tower section made by high degree steel structure, therefore, stability and solidity on operation.

Tower crane--Hydraulic lift-up device
With unique hydraulic lifting system is locally manufactured and applied according to the advanced technology on the world, made it meeting all the leading standards of high quality on the world.