Tower Crane QTZ125

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, QTZ125 (TC6018/6313/6515)

The QTZ125 hammerhead tower cranehas advanced technical parameters with a maximum radius of 60/63/65m and a maximum height of 181m with mast sections and anchorages. If customers need, we can design this self-erecting craneto reach 200m.

The hammerhead tower crane can come in stationary, external climbing and inner climbing models that can be used in different construction sites. It has a high speed for its trolley and slewing mechanisms and are easily adjusted without compromising the construction machinery's stability.

With an imported electronic control system, the top slewing crane has a service life that is three times longer than other cranes on the domestic market, and has fewer errors and is easier to maintain.

The tower crane features a lightweight structure in which the mast sections have integral angle steel welding that is safe and reliable. Advanced mechanical or Mechatronics products work efficiently even in poor conditions to keep the tower cranes working safely at top performance.

Advanced Electronic Appliances
1) Excellent safety devices including weight limiters, moment limiters, height limiters, radius limiters, slewing limiters, and slewing and trolleying brakes
2) Device to prevent the wire ropes and shafts from breaking
3) The rope controlling system of hoisting mechanism

Technical Performances of the Hammerhead Tower Crane

Rated Lifting Torque			kN.m	1250
Maximum Lifting Load			t	10
Work Radius			m	3 ~ 60/63/65
Lifting Height	Independent			50
	Attaching			180
Lifting Speed	2-falls		m/min	101.5/51.83
	4-falls			49.11/25.08
Slewing Speed			r/min	0.65
Trolleying Speed			m/min	58.6/29.3/8.79
Climbing Speed				0.4
Minimum Stable Falling Speed				≤5
Machine Dimension	Chassis		m	8×8
	Total Height	Independent		60
		Attaching		190
	Tip of jib to slewing center			63.372
	Tip of balanced jib to slewing center			14.82
Self-weight of whole crane	Structure Weight	Independent	t	63.508
		Attaching		125.628
	Balance Weight			20.8
Total Capacity of Motor			kW	60.85
Allowable Work Temperature			℃	-20 ~ 40
Power Supply Parameter			50Hz	~ 380V±10%

Detailed Technical Parameters of Tower Crane Mechanisms

Work grade of mechanisms		Hoisting mechanism		M5
		Slewing mechanism		M4
		Trolleying mechanism		M4
Radius (m)		Min. 2.5		Max. 60/63/65
Hoisting Height (m)		Independent		Attaching
		50		181.3
Max. Load (t)		8
Hoisting mechanism	Type	QEW-880D
	Falls	α=2		α=4
	Load and speed (t and m/min)	2/80	4/40	4/40	8/20
	Power ( Kw )	30/30
Trolleying mechanism	Speed (m/min)	0~55
	Power ( Kw )	5.5
Slewing mechanism	Speed (r/min)	0~0.8
	Power ( Kw )	4.0×2
Jacking mechanism	Speed (m/min)	0.58
	Power ( Kw )	7.5
	Work pressure ( MPa )	25
Balanced weight	Jib (m)	53		58	63
	Load (t)	17		18.5	20
Total power (kW)		43.5 (without hydraulic system)
Work temperature ℃		-20~ 40

	Type				Unit	QEW-880D
Hoisting mechanism	Max. Tractive force				N	24444
	Steel wire rope		Specification			35 ´ 7-14-1770 or 6T29Fi IWR-14-1670
			Max. Line speed		m/min	160
	Drum		Speed		r/min	91.6
			Capacity		m	300(4 layers)
	Motor		Type			YZRDW250M1-4/8
			Power		kW	30/30
			Speed		r/min	1425/725
	Type of reducer					ZQ60-16-IV-CA
	Brake		Type			YWZ3 -315/90-16
			Braking moment		N.m	1250
Trolleying mechanism	Type				Unit	BP55
	Max. Tractive force				N	9000
	Steel wire rope	Spec.				6 ´ 19-9.3-1700-
		Max. Line speed			m/min	55
		Length		53m jib	m	Steel wire rope Ⅰ	106	Steel wire rope Ⅱ	64
				58m jib	m		116		69
				63m jib	m		126		74
	Speed of drum				r/min	0~ 32.7
	Motor	Type				YEJ132S-4B5
		Power			kW	5.5
		Speed			r/min	1440
	Ratio of reducer					47.87
	Braking moment				N. m	38.7

	Type			Unit	HPW40
Slewing mechanism	Motor		Type	YTW112M-4B5
			Power	kW	4.0
			Speed	r/min	0~1440
	Reducer		Type		XX4-100.195C
			Transmission ratio		195
			Output torque	N.m	10000
			Output speed	r/min	0~4.923
	Parameters of output gear		Modulus 　 m		12
			Teeth z		16
			Modification coefficient x		0.5
	Total ratio of main engine			1596.56
	Speed			0~0. 8
Jacking mechanism	Motor	Power		kW	7.5
		Speed		r/min	1440
	Hydraulic pump station	Flow		l/min	14
		Work pressure		MPa	25
	Jacking cylinder	Dia . of cylinder and piston rod		mm	160/110
		Max. Jacking force		t	50
		Jacking speed		m/min	0.58

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