Tower Crane QTZ160

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, QTZ160

General introduction
The hammerhead tower crane features a horizontal support arm, trolley, top slewing, and hydraulic climbing. Its maximum load is 10t, rated load moment is 1600kN·m, and maximum load moment is 1842kN·m.

Features of the hammerhead tower crane
1) Advanced performance and technical parameters.
2) Aesthetically designed with a maximum working radius of 60m, increasing the work space of the top slewing crane.
3) A variety of stationary and attached tower cranes can be used for different construction sites. Freestanding height is 50m. With attachments, height can be 180m (2 falls) or 90m (4 falls).
4) High working speed while remaining stable and efficient.
Hoisting mechanism uses a multi-speed winding motor and single speed reducer for large loading. Its maximum speed is 104 m/min.
Slewing mechanism uses a winding motor, planetary gear reducer, and hydraulic couplings for high loading capacity, good stability, and wind resistance.
5) The hoisting jib has rigid double drawing bars and is lightweight, compact, and wind-resistant.
6) Equipped with various safety devices to guarantee that the hammerhead cranes work stably.
7) The cab of the construction machinery has a wide field of vision and is comfortable and convenient to operate within.
8) Easy to install and maintain.

Without a balanced weight, foundation and anchors, the QTZ160 hammerhead tower crane weighs 60.463t and has a total capacity of 78.5 Kw. This hoisting equipment is widely used in construction projects for high-rise hotels, residential housing and industrial buildings.

Technical parameters of the hammerhead tower crane

Item			Unit	2 falls	4 falls
Rated lifting torque			kN.m	1600
Max. lifting capacity			t	5	10
Working range			m	3 ~ 60
Lifting capacity at Max. range			t	2.461	2.439
Range at Max. lifting load			m	33.8	18.4
Lifting height		Independent	m	50
		Adhered		180	90
Lifting speed			m/min	104/50.05	52.05/25.02
Slewing speed			r/min	0.61
Trolleying speed			m/min	58.6/29.3/8.79
Jacking speed				0.4
Min. speed of steadily declining				≤5
Height	Foundation frame		m
	Height of the overall machine (independent)			60.44
	Tip of jib to the slewing center			61.384
	Tip of balanced jib to the slewing center			15.22
Overall weight	Structure weight		t	60.463
	Counterweight	Max. radius =60m		23
		Max. radius =56m		21
		Max. radius =50m		17.8
Total capacity of motors			KW	78.5
Allowable work temperature			℃	-20 ~ 40
Basic wind pressure in service			Pa	250
Basic wind pressure out service			Pa	1100
Power supply			50Hz	~ 380V ± 10%

Mechanical load factor		Hoisting mechanism		M5
		Slewing mechanism		M4
		Trolleying mechanism		M4
Hoisting mechanism	Motor	Type		YZRDW280M-4/8-55/55
		(kW) power		55/55
	Height limiter	Type		FKDX-G
	Steel wire rope	Specification		6X37-16-1770- Ⅰ
		(N) maximum tractive force		25000
	Magnification	a=2		a=4
	(m/min) hoisting speed	104	50.05	52.05	25.02
	(t) rated load	2	4	5	10
	Min. speed of steady declining	m/min		≤5
Slewing mechanism	Motor	Type		YZR160M1-6
		(kW) power		5.5×2
		(r/min) speed		908
	Reducer	Type		XX4-120AI
		Transmission ratio		195
	Hydraulic coupler	Type		YOX280A
	Slewing pinion gears	No. of modulus		12
		No. of teeth		19
		Modification coefficient		＋ 0.5
	Slewing speed	r/min		0.61
Slewing bearing	Single row four points contact ball type slewing bearing	Type		011·50·1600
		No. of modulus		12
		No. of teeth		151
Hydraulic jacking mechanism	Motor	Type		Y132M-4-B5
		(kW) power		7.5
	Rated work pressure of cylinder	MPa		30
	Cylinder stroke	mm		1600
	Locating distance	mm		2150
	Dia . of cylinder	mm		φ180
	Dia . of cylinder piston rod	mm		φ120
	Jacking speed	m/min		0.4
Trolleying mechanism	Motor	Type		YZTDE180M-4/8/24
		(kW) power		5/3.7/1.1
	Steel wire rope	Specification		6X19-9.3-1550-
	Reducer	Type		XX3-14.40
		Transmission ratio		39.7
	Trolleying speed	m/min		58.6/29.3/8.79

Safety-protection device
According to the GB5144 safety regulations for tower cranes, we equip our hammerhead tower cranes with safety-protection devices such as the moment limiter, overload limit switch, over hoist limit switch, slewing limit switch, trolley limit switch and anemoscope.

Structure
Computer-aided, optimal design guarantees the strength, rigidity, and wear-resistance of the tower crane’s structure.

The tower section of TC6516 is a sheet structure with treated pivots that connect tower sections. The main stand bar is a square-shaped steel tube structure made with submerged-arc welding. The hammerhead tower crane is reliable, reducing the whole load and raising stability. The square steel tube is wind-resistant and rigid.

Main parameters

Item	Performance	Parameters
1	Max. Load	10t
2	Max. jib length	65m
3	Tip load	1.6t
4	Free standing height	50m
5	Max. height	200m
6	Size of mast section	1.835×1.835 ×2.8m
7	Material of mast section	∠ 140×14, manganese steel

Technical performance

Work rank of whole crane	A4	Work rank of mechanisms	Hosting mechanism		M5
			Slewing mechanism		M4
			Trolleying mechanism		M4
Hoisting height(m)	Free standing=53		Attached=200
Max. load			4 falls=10t 2 falls=5t
Radius(m)		Max. radius	65
		Min. radius	2.5
Tip load (t)			1.6
Hoisting mechanism	Speed	Magnification	α=2
		Load (t)	≤2.5		≤5
		Speed (m/ min)	100		50
		Magnification	α=4
		Load (t)	≤5		≤10
		Speed (m/ min)	50		25
	Type of motor and power		TZRSWF250M2-4/8 37kW
Slewing mechanism	Speed		Type of motor		Power
	0.56r/min		YTW132S-4		5.5kW×2
Trolleying mechanism	Speed		Type of motor		Power
	60/30/9		YDEG180-4/8/24		5/3/1 .1kW
Jacking mechanism	Speed		Rated work pressure		Power
	0.5m /min		20MPa		7.5kW
Counterweight	Jib length(m)		65	60	55	47.5
	Weight (t)		24	21.9	21	16.5
Total power	53kW (without jacking motor)
Power supply	~ 380V(±5%)		Frequency	50Hz	Work temperature	–10 ℃ ~ 40 ℃

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