best construction equipment of Topless Tower Cranes

Our self-erecting crane makes use of the single row four-point contact slewing bearing manufactured via advanced process by Hoesch

Rothe Erde in Germany. This slewing bearing offers fine rigidity as well as excellent bearing ability of axial and radial tilting torque.

The slewing device comprises hydraulic coupling and planetary gear reducer, thus it enjoys high torsional capacity, high

transmission ratio, compact structure, steady operation, and low failure rate.

1.Performance parameters of QTP5510-6:

• Max. jib length: 55m; Jib length under different assembling modes can decrease progressively by 5 meters and the Min. jib length is 45 meters.

• Max. lifting capacity 6t;

• Max. hoisting capacity at jib tip: 1t;

• Max. lifting moment 630 t.m;

• Max. free-standing height: 40m; Max. working height of anchored crane: 160m;

• Hoisting mechanism power: 24/24/5.4 KW; rope capacity: 360m;

• Slewing mechanism power: 5.5KW

• Trolleying mechanism power: 3.3/2.2 KW

• Types of Tower Crane: stationary crane with embedded outriggers, stationary crane with embedded bolts, stationary crane with under-frame and Mobile Tower Crane.

2. Electrical control system

With PLC control, the electrical control system enjoys better reliability and safety. Produced by professional manufacturers with advanced foreign technology, the electrical elements feature service lives that are 3 or 4 times longer than that of domestic products, less faults, easy maintenance and repair as well as reliable operation.

3. Technical features

• The crane boasts of multiple operation modes and wide application. The crane can work in different forms: stationary crane with embedded outriggers, stationary crane with under-frame, stationary crane with embedded bolts and crane anchored to wall, thus being applicable to various construction projects.

• The complete machine adopts internationally well-received beautiful shape;

• The crane features high working speed and excellent speed regulation performance. Stepless speed regulation by frequency control, the world's most advanced solution, is adopted for the trolleying mechanism and slewing mechanism, thus ensuring more stable and reliable operation ;

• The cab is independently installed externally with good vision and large inner space, thus offering a good working environment for operators;

• A variety of safety devices are equipped, which are all mechanical or mechatronic products that are applicable to severe working conditions, so as to ensure the tower crane's reliable operation.

Rated hoisting moment kN.m		630
Lifting height m		Rope fall		Free-standing stationary crane				Anchored crane
		α=2		40				160
		α=4		40				80
Working radius m		Max. working radius				55
		Min. working radius				2.5
Max. lifting capacity t		6
Hoisting mechanism	Rope fall	α=2				α=4
	Speed m/min	9	30		60	4.5	15		30
	Lifting weight t	3	3		1	6	6		1
	Power kW	24/24/5.4
Traction mechanism		Speed m/min				40/20
		Power kW				3.3/2.2
Slewing mechanism		Speed r/min				0~0.7
		Power kW				5.5

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