Flat Top Tower Cranes for Sale by Hstowrcrane

Model NO.: HST 7528 Condition: New Moving Type: Fixed Color: Yellow, Red, Blue Max. Height with Wall Tie Ins: 205m Section Material: Angle Steel 200*22mm Max. Lifting Capacity: 18 Ton OEM Service: Offered Tower Crane Type: Under Slewing Cranes Main Girder Form: Single Girder Trademark: HS Specification: ISO9001, CE, SGS HS Code: 84262000 Certification: CE, ISO9001: 2000 Installation: Assembled Type: Tower Crane Free Standing Height: 50m Section Dimension: 2*2*3m Jib Lenght: 75 M Jib Tip Capacity: 2.8 Ton Application: Construction Usage, Workshop Usage, Container Usage, Mineral Area Usage Sling Type: Wire Rope Power Source: Electric Transport Package: Bare Into Containers, Spare Parts in Steel Box Origin: China Flat Top Tower Cranes for Sale by HSTOWRCRANE


Flat top tower cranes
Flat top tower cranes don't have the "tops" of conventional cranes; 
they can be used in conjunction with other tower cranes at sites where space is confined or near the airports.
 
A working crane is a profitable crane, and Flat top tower cranes are built to work.
 
They're well suited for heavy lifting and placement duties on the most challenging jobsites. And they can also help you save time on other jobsite duties by easily moving materials from one area to another.
 
From the efficient setup that gets you working quickly to the variety of jobsite duties it can handle, you'll get great value from your Flat top tower crane every day.
 
The HST series includes crane models from 50 to 720 mt.
 
Features
 
1. Quality manufacturing designed for reliable performance hour after hour
2. Easy maintenance access and built-in safety features to keep downtime to a minimum
3. Ergonomic cabs provide the comfort required for long hours on the job


1.4  working mechanisms 
   
    Working mechanism include: lifting mechanism, slewing mechanism, trolley traveling mechanism and climbing mechanism.
 
1.  lifting mechanism
Lifting mechanism use AC asynchronous motor to control speed, it consist of variable frequency motor, plum coupling, reducer, drum shaft assembly, brake ,rack, etc.. Through frequency converter changing input power`s frequency to change lifting speed; when mains frequency is equal to or less than rated frequency, the lifting mechanism can lift rated load; when mains frequency is greater than rated frequency, with the rising of speed, the weight that lifting mechanism can load will decline. Lifting mechanism is always in braking position when it doesn't work. There a height limiter in the other side of dram shaft, the height sensor of safety monitoring system is connected with height limiter.
Main Performance and Technical Parameters of lifting mechanism

Mechanism Operation Level	M5
Mechanism Utilization Level	T5
loading condition	L2
lifting performance	Multiplying factor	a=2		a=4
	Lifting Capacity(t)	4.5	9	9	18
	speed(m/min)	0~90	0~45	0~45	0~22.5
	Steady slowest lowering speed (m/min):5
motor	YZTP280S1-4   75KW
reducer	JQ08  ratio speed 41.75
Specification of wire rope	GB/T8918-2006  22NAT 35W×7-1870
max Rope Capacity	620m

2 trolley traveling mechanism
2. Trolley traveling mechanism is consist of variable frequency motor
Main Performance and Technical Parameters of trolley traveling mechanism

mechanism type	11JXF8
changing speed	13.5/42.5/75m/min
motor	YPWEF132L-4   11kW
Rope Capacity of Lifting Drum	75m
Specification of wire rope	GB/T8918-1986 11NAT6×29Fi+FC1770ZS
length of wire rope	75m jib length:108/137m
traction	9000N

 3. slewing mechanism
Slewing mechanism is driven by variable frequency motor; through Level 4 planetary reducer drives pinion, then pinion and slewing bearing gear engagement drives the upper crane to slewing. 
Main Performance and Technical Parameters of slewing mechanism

Mechanism Operation Level	M5
Mechanism Utilization Level	T4
loading condition	L3
amount of slewing mechanism	2 sets
slewing speed	0~0.85r/min
motor	YTLEJ132L-185-4B1(4B2)
reduction ratio	183
rated output torque	14500N.m
pinion	m=12  z=15  x=+0.5

4climbing mechanism
Climbing mechanism depends on hydraulic cylinder, hydraulic pump station, high-pressure oil pipe and climbing beam that back of climbing frame to finish its work.

Main Performance and Technical Parameters of climbing mechanism

working pressure	28Mpa
climbing speed	0.4m/min
motor parameters	Y2-160M-4  11kW
Oil cylinder diameter/piston diameter	220/140mm
min installation dimension of oil cylinder	2170mm
oil cylinder Traveling distance	1600mm

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Product Categories : Tower Crane > Flat Top Crane