GHE4033 portal crane is mobile four links,rack luffing type. It
does apply to
operate on jetty or port, rotational support is using slewing
bearing, through slewing
driven mechanism to make the crane with 360°fully rotation and move
on the rail which
is provided by the port.
This crane has hoisting,luffing and rotation mechanism. main metal
truss boom,slewing column,rotation platform and pedestal column and
For safety equipment,This crane has load moment
obstacle lights,Lightning arresters and each part has relevant
protection.380V,50Hz.Crane’s power supply:AC380V,50Hz 3 Phase
Crane’s mechanism should meet strength,stiffness and stability
requiremnt.the apperance of the mechanism is easy to
and coating.there are leakage hole to get rid of water in each
checking passage for each area need check and repair.considering
effect of corrosive working environment.main bearing structure is
unwelding parts will be applied hinged bolts and strong nuts to
6.2 A frame and boom
A frame and boom are main force components,has enough strength and
windward area is small and wrest resistantance is betterand have a
6.3 operating platform,walking board,ladder,handrail
operating platform,walking board,ladder should set at convenient
and safe area for
repairing and checking or replacement parts.perating
are welded by steel,width of passage and ladder is less than
500mm,step distance is
in 180-230mm,walking board and operating platform’s plank use
anti-slip steel structure,
ladder useHot dip zinc grille pedal,boom has checking
walking board,ladder setting height is more than 1050mm with double
column distance is less than 2m,platform ,walking board and passage
net height is
less 2m,vertical ladder’s width is less than 400mm,if the height is
protection circle.at the bottom of walking board,platform and
passage has guard board
which is more than 60mm
7.1 Lifting mechanism
7.1.1 Lifting mechanism is consist of Electric motor, reducer,brake
,and wire rope reel.
7.1.2The brake of the lifting mechanism is normally closed
electro-hydraulic block brake,which has good heat dissipation and
stable friction coefficient.It ensure the machine can stop at any
height accurately and safely in the working range in long-term
7.1.3 At the end of wire rope drum,there is a crane height
limiter,which has maximum/Minimum lifting heigth limit fuction.
7.2 luffing mechanism
7.2.1 The luffing mechanism is consist of electric
motor,reducer,brake,gear and rack.
7.2.2 The luffing mechanism adopts gear and rack drive,together
with boom balancing system.
7.2.3 The luffing mechanism has maximum and minimum amplitude limit
device. Decelerate before amplitude reach maximum and minimum.and
there is a light indication anf sound alam. When reach the limit
position ,the amplitude will stop. Then the luffing mechanism can
only working in the opposite direction.
7.3 Rotating mechanism
7.3.1 Rotating mechanism is consist of rotating drive and slewing
bearing. Rotating mechanism adopts motor reducer drive,which has
features of stable, safety,reliable and achieve 360 degrees all
7.3.2 Rotating drive device is consists of motor ,limit moment
coupling,hard tooth vertical planetary gear reducer,mechanical
hydraulic brake,handle brake,output shaft pinion.and rotating
bearing device. The limit moment coupling can protect the motor and
transmission parts when overload.
7.3.3 The rotating bearing device adopts three row roller bearing
device.Equipped with electric pump is convenient for lubricating
and ensure it in good lubricate condition.
8.The main components
8.1 Wire rope
The structure and property of the wire rope is selected according
to the national
standard,and in the line with crane design specification.what’s
more ,it has the
8.2.1 Made by steel plate bending welding drum,weld annealing and
the NDT inspection.
8.2.2 The drum adopts single winding
8.2.3 There are should be at least 3 circle safety-rope ,when the
hook at the lowest position.
8.3.1 Using hot-rolled pulley,which groove has been precise rolled
8.3.2 The pulley is setting the prevent jump rope protection
8.3.3 To convenient the replacement and spare parts,when in design
and choose the pulley,the seriation and standardization pulley has